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adhesive joints</title> <meta name="description" content="Search results for: mixed adhesive joints"> <meta name="keywords" content="mixed adhesive joints"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="mixed adhesive joints"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 3370</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: mixed adhesive joints</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3370</span> New Techniques to Decrease the Interfacial Stress in Steel Beams Strengthened With FRP Laminates</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20S.%20Bouchikhi">A. S. Bouchikhi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Megueni"> A. Megueni</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Habibi"> S. Habibi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One major problem when using bonded Fiber Reinforced Polymer is the presence of high inter facial stresses near the end of the composite laminate which might govern the failure of the strengthening schedule. It is known that the decrease of FRP plate thickness and the fitness of adhesive reduce the stress concentration at plate ends. Another way is to use a plate with a non uniform section or tapered ends and softer adhesive at the edges. In this paper, a comprehensive finite element (FE) study has been conducted to investigate the effect of mixed adhesive joints (MAJ) and tapering plate on the inter facial stress distribution in the adhesive layer, this paper presents the results of a study of application of two adhesives with different stiffnesses (bi-adhesive) along the joint strength length between the CFRP-strengthened steel beam for tapered and untapered plate on the distribution of inter facial stresses. A stiff adhesive was applied in the middle portion of the joint strength, while a low modulus adhesive was applied towards the edges prone to stress concentrations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=FRP" title="FRP">FRP</a>, <a href="https://publications.waset.org/abstracts/search?q=mixed%20adhesive%20joints" title=" mixed adhesive joints"> mixed adhesive joints</a>, <a href="https://publications.waset.org/abstracts/search?q=stresses" title=" stresses"> stresses</a>, <a href="https://publications.waset.org/abstracts/search?q=tapered%20plate" title=" tapered plate"> tapered plate</a>, <a href="https://publications.waset.org/abstracts/search?q=retrofitted%20beams%20bonded" title=" retrofitted beams bonded"> retrofitted beams bonded</a> </p> <a href="https://publications.waset.org/abstracts/19553/new-techniques-to-decrease-the-interfacial-stress-in-steel-beams-strengthened-with-frp-laminates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19553.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">498</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3369</span> Studying the Load Sharing and Failure Mechanism of Hybrid Composite Joints Using Experiment and Finite Element Modeling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seyyed%20Mohammad%20Hasheminia">Seyyed Mohammad Hasheminia</a>, <a href="https://publications.waset.org/abstracts/search?q=Heoung%20Jae%20Chun"> Heoung Jae Chun</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong%20Chan%20Park"> Jong Chan Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Hong%20Suk%20Chang"> Hong Suk Chang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Composite joints have been getting attention recently due to their high specific mechanical strength to weight ratio that is crucial for structures such as aircrafts and automobiles. In this study on hybrid joints, quasi-static experiments and finite element analysis were performed to investigate the failure mechanism of hybrid composite joint with respect to the joint properties such as the adhesive material, clamping force, and joint geometry. The outcomes demonstrated that the stiffness of the adhesive is the most imperative design parameter. In this investigation, two adhesives with various stiffness values were utilized. Regarding the joints utilizing the adhesive with the lower stiffness modulus, it was observed that the load was exchanged promptly through the adhesive since it was shared more proficiently between the bolt and adhesive. This phenomenon permitted the hybrid joints with low-modulus adhesive to support more prominent loads before failure when contrasted with the joints that utilize the stiffer adhesive. In the next step, the stress share between the bond and bolt as a function of various design parameters was studied using a finite element model in which it was understood that the geometrical parameters such as joint overlap and width have a significant influence on the load sharing between the bolt and the adhesive. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite%20joints" title="composite joints">composite joints</a>, <a href="https://publications.waset.org/abstracts/search?q=composite%20materials" title=" composite materials"> composite materials</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20joints" title=" hybrid joints"> hybrid joints</a>, <a href="https://publications.waset.org/abstracts/search?q=single-lap%20joint" title=" single-lap joint"> single-lap joint</a> </p> <a href="https://publications.waset.org/abstracts/85844/studying-the-load-sharing-and-failure-mechanism-of-hybrid-composite-joints-using-experiment-and-finite-element-modeling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85844.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">406</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3368</span> Bonding Strength of Adhesive Scarf Joints Improved by Nano-Silica Subjected to Humidity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20Paygozar">B. Paygozar</a>, <a href="https://publications.waset.org/abstracts/search?q=S.A.%20Dizaji"> S.A. Dizaji</a>, <a href="https://publications.waset.org/abstracts/search?q=A.C.%20Kandemir"> A.C. Kandemir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the effects of the modified adhesive including different concentrations of Nano-silica are surveyed on the bonding strength of the adhesive scarf joints. The nanoparticles are added in two different concentrations, to an epoxy-based two-component structural adhesive, Araldite 2011, to survey the influences of the nanoparticle weight percentage on the failure load of the joints compared to that of the joints manufactured by the neat adhesive. The effects of being exposure to a moist ambience on the joint strength are also investigated for the joints produced of both neat and modified adhesives. For this purpose, an ageing process was carried out on the joints of both neat and improved kinds with variable immersion periods (20, 40 and 60 days). All the specimens were tested under a quasi-static tensile loading of 2 mm/min speed so as to find the quantities of the failure loads. Outcomes indicate that the failure loads of the joints with modified adhesives are measurably higher than that of the joint with neat adhesive, even while being put for a while under a moist condition. Another result points out that humidity lessens the bonding strength of all the joints of both types as the exposure time increases, which can be attributed to the change in the failure mode. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bonding%20strength" title="bonding strength">bonding strength</a>, <a href="https://publications.waset.org/abstracts/search?q=humidity" title=" humidity"> humidity</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-silica" title=" nano-silica"> nano-silica</a>, <a href="https://publications.waset.org/abstracts/search?q=scarf%20joint" title=" scarf joint"> scarf joint</a> </p> <a href="https://publications.waset.org/abstracts/115145/bonding-strength-of-adhesive-scarf-joints-improved-by-nano-silica-subjected-to-humidity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/115145.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">173</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3367</span> Experimental and Numerical Analysis on Enhancing Mechanical Properties of CFRP Adhesive Joints Using Hybrid Nanofillers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Qiong%20Rao">Qiong Rao</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiongqi%20Peng"> Xiongqi Peng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, multi-walled carbon nanotubes (MWCNTs) and graphene nanoplates (GNPs) were dispersed into epoxy adhesive to investigate their synergy effects on the shear properties, mode I and mode II fracture toughness of unidirectional composite bonded joints. Testing results showed that the incorporation of MWCNTs and GNPs significantly improved the shear strength, the mode I and mode II fracture toughness by 36.6%, 45% and 286%, respectively. In addition, the fracture surfaces of the bonding area as well as the toughening mechanism of nanofillers were analyzed. Finally, a nonlinear cohesive/friction coupled model for delamination analysis of adhesive layer under shear and normal compression loadings was proposed and implemented in ABAQUS/Explicit via user subroutine VUMAT. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanofillers" title="nanofillers">nanofillers</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive%20joints" title=" adhesive joints"> adhesive joints</a>, <a href="https://publications.waset.org/abstracts/search?q=fracture%20toughness" title=" fracture toughness"> fracture toughness</a>, <a href="https://publications.waset.org/abstracts/search?q=cohesive%20zone%20model" title=" cohesive zone model"> cohesive zone model</a> </p> <a href="https://publications.waset.org/abstracts/147772/experimental-and-numerical-analysis-on-enhancing-mechanical-properties-of-cfrp-adhesive-joints-using-hybrid-nanofillers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147772.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">133</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3366</span> Effects of Repeated High Loadings on the Performance of Adhesively-Bonded Single Lap Joints</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Orkun%20Yavuz">Orkun Yavuz</a>, <a href="https://publications.waset.org/abstracts/search?q=Ferhat%20Kadio%C4%9Flu"> Ferhat Kadioğlu</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Emin%20Ercan"> M. Emin Ercan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study aims to investigate the effects of repeated high loadings on the performance of adhesively-bonded Single Lap Joints (SLJs) by employing both experimental and numerical approaches. A projectile with a mass of 1.25 gr and density of 11.3 gr/cm3 was fired at the joints with a velocity of about 280 m/s using a specially designed experimental set-up, and the impact was recorded via a high-speed camera. The SLJs were manufactured from 6061 aluminum adherend (AA6061) material and an adhesive film. The joints, which have an adherend thickness of 4 mm and overlap length of 15 mm, were subjected to up to 3 shots for the ballistic test, followed by quasi-static tensile testing. The impacted joints, then, were compared to the non-impacted and one-shot impacted ones, which was a subject of investigation carried out before. It was found that while the joints subjected to 2 shots mechanically deteriorated, those subjected to 3 shots experienced a complete failure at the end of the experiment. A numerical study was also conducted using an ABAQUS package program. While the adherends were modelled using the Johnson-Cook deformation parameters, an elastoplastic behavior of the adhesive was used as input data in the analyses. It seems the experimental results confirm the numerical ones. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ballistic%20tests" title="ballistic tests">ballistic tests</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive%20joints" title=" adhesive joints"> adhesive joints</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20analysis" title=" numerical analysis"> numerical analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=SLJ" title=" SLJ"> SLJ</a> </p> <a href="https://publications.waset.org/abstracts/180863/effects-of-repeated-high-loadings-on-the-performance-of-adhesively-bonded-single-lap-joints" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/180863.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">64</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3365</span> Lamb Waves Propagation in Elastic-Viscoelastic Three-Layer Adhesive Joints </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pezhman%20Taghipour%20Birgani">Pezhman Taghipour Birgani</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Shekarzadeh"> Mehdi Shekarzadeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the propagation of lamb waves in three-layer joints is investigated using global matrix method. Theoretical boundary value problem in three-layer adhesive joints with perfect bond and traction free boundary conditions on their outer surfaces is solved to find a combination of frequencies and modes with the lowest attenuation. The characteristic equation is derived by applying continuity and boundary conditions in three-layer joints using global matrix method. Attenuation and phase velocity dispersion curves are obtained with numerical solution of this equation by a computer code for a three-layer joint, including an aluminum repair patch bonded to the aircraft aluminum skin by a layer of viscoelastic epoxy adhesive. To validate the numerical solution results of the characteristic equation, wave structure curves are plotted for a special mode in two different frequencies in the adhesive joint. The purpose of present paper is to find a combination of frequencies and modes with minimum attenuation in high and low frequencies. These frequencies and modes are recognizable by transducers in inspections with Lamb waves because of low attenuation level. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=three-layer%20adhesive%20joints" title="three-layer adhesive joints">three-layer adhesive joints</a>, <a href="https://publications.waset.org/abstracts/search?q=viscoelastic" title=" viscoelastic"> viscoelastic</a>, <a href="https://publications.waset.org/abstracts/search?q=lamb%20waves" title=" lamb waves"> lamb waves</a>, <a href="https://publications.waset.org/abstracts/search?q=global%20matrix%20method" title=" global matrix method"> global matrix method</a> </p> <a href="https://publications.waset.org/abstracts/33259/lamb-waves-propagation-in-elastic-viscoelastic-three-layer-adhesive-joints" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33259.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">393</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3364</span> The Influence of Fiber Fillers on the Bonding Safety of Wood-Adhesive Interfaces: A Fracture Energetic Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20H.%20Brandtner-Hafner">M. H. Brandtner-Hafner</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adhesives have established themselves as an innovative joining technology in the wood industry. The strengths of adhesive bonding lie in the realization of lightweight designs, the avoidance of material weakening, and the joining of different types of materials. There is now a number of ways to positively influence the properties of bonded joints. One way is to add fiber fillers. This leads to an improvement in adhesion, structural integrity, and fracture toughness. In this study, the effectiveness of fiber-modified adhesives for bonding wooden joints is reviewed. A series of experimental tests were performed using the fracture analytical GF-principle to study the adhesive bonding safety and performance of the wood-adhesive interface. Two different construction adhesives based on epoxy and PUR were modified with different fiber materials and applied to bond wooden joints. The results show that bonding efficiency by adding fibrous materials to the bonding matrix leads to significant improvements in structural material properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fiber-modified%20adhesives" title="fiber-modified adhesives">fiber-modified adhesives</a>, <a href="https://publications.waset.org/abstracts/search?q=bonding%20safety" title=" bonding safety"> bonding safety</a>, <a href="https://publications.waset.org/abstracts/search?q=wood-adhesive%20interfaces" title=" wood-adhesive interfaces"> wood-adhesive interfaces</a>, <a href="https://publications.waset.org/abstracts/search?q=fracture%20analysis" title=" fracture analysis"> fracture analysis</a> </p> <a href="https://publications.waset.org/abstracts/137969/the-influence-of-fiber-fillers-on-the-bonding-safety-of-wood-adhesive-interfaces-a-fracture-energetic-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/137969.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">97</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3363</span> Effects of Different Fiber Orientations on the Shear Strength Performance of Composite Adhesive Joints</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ferhat%20Kadioglu">Ferhat Kadioglu</a>, <a href="https://publications.waset.org/abstracts/search?q=Hasan%20Puskul"> Hasan Puskul</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A composite material with carbon fiber and polymer matrix has been used as adherent for manufacturing adhesive joints. In order to evaluate different fiber orientations on joint performance, the adherents with the 0°, ±15°, ±30°, ±45° fiber orientations were used in the single lap joint configuration. The joints with an overlap length of 25 mm were prepared according to the ASTM 1002 specifications and subjected to tensile loadings. The structural adhesive used was a two-part epoxy to be cured at 70°C for an hour. First, mechanical behaviors of the adherents were measured using three point bending test. In the test, considerations were given to stress to failure and elastic modulus. The results were compared with theoretical ones using rule of mixture. Then, the joints were manufactured in a specially prepared jig, after a proper surface preparation. Experimental results showed that the fiber orientations of the adherents affected the joint performance considerably; the joints with ±45° adherents experienced the worst shear strength, half of those with 0° adherents, and in general, there was a great relationship between the fiber orientations and failure mechanisms. Delamination problems were observed for many joints, which were thought to be due to peel effects at the ends of the overlap. It was proved that the surface preparation applied to the adherent surface was adequate. For further explanation of the results, a numerical work should be carried out using a possible non-linear analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite%20materials" title="composite materials">composite materials</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive%20bonding" title=" adhesive bonding"> adhesive bonding</a>, <a href="https://publications.waset.org/abstracts/search?q=bonding%20strength" title=" bonding strength"> bonding strength</a>, <a href="https://publications.waset.org/abstracts/search?q=lap%20joint" title=" lap joint"> lap joint</a>, <a href="https://publications.waset.org/abstracts/search?q=tensile%20strength" title=" tensile strength"> tensile strength</a> </p> <a href="https://publications.waset.org/abstracts/35970/effects-of-different-fiber-orientations-on-the-shear-strength-performance-of-composite-adhesive-joints" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35970.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">370</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3362</span> The Effect of the Adhesive Ductility on Bond Characteristics of CFRP/Steel Double Strap Joints Subjected to Dynamic Tensile Loadings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haider%20Al-Zubaidy">Haider Al-Zubaidy</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiao-Ling%20Zhao"> Xiao-Ling Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Riadh%20Al-Mahaidi"> Riadh Al-Mahaidi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, the technique adhesively-bonded fibre reinforced polymer (FRP) composites has found its way into civil engineering applications and it has attracted a widespread attention as a viable alternative strategy for the retrofitting of civil infrastructure such as bridges and buildings. When adopting this method, adhesive has a significant role and controls the general performance and degree of enhancement of the strengthened and/or upgraded structures. This is because the ultimate member strength is highly affected by the failure mode which is considerably dependent on the utilised adhesive. This paper concerns with experimental investigations on the effect of the adhesive used on the bond between CFRP patch and steel plate under medium impact tensile loading. Experiment were conducted using double strap joints and these samples were prepared using two different types of adhesives, Araldite 420 and MBrace saturant. Drop mass rig was used to carry out dynamic tests at impact speeds of 3.35, 4.43 and m/s while quasi-static tests were implemented at 2mm/min using Instrone machine. In this test program, ultimate load-carrying capacity and failure modes were examined for all loading speeds. For both static and dynamic tests, the adhesive type has a significant effect on ultimate joint strength. It was found that the double strap joints prepared using Araldite 420 showed higher strength than those prepared utilising MBrace saturant adhesive. Failure mechanism for joints prepared using Araldite 420 is completely different from those samples prepared utilising MBrace saturant. CFRP failure is the most common failure pattern for joints with Araldite 420, whereas the dominant failure for joints with MBrace saturant adhesive is adhesive failure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFRP%2Fsteel%20double%20strap%20joints" title="CFRP/steel double strap joints">CFRP/steel double strap joints</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesives%20of%20different%20ductility" title=" adhesives of different ductility"> adhesives of different ductility</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20tensile%20loading" title=" dynamic tensile loading"> dynamic tensile loading</a>, <a href="https://publications.waset.org/abstracts/search?q=bond%20between%20CFRP%20and%20steel" title=" bond between CFRP and steel"> bond between CFRP and steel</a> </p> <a href="https://publications.waset.org/abstracts/40632/the-effect-of-the-adhesive-ductility-on-bond-characteristics-of-cfrpsteel-double-strap-joints-subjected-to-dynamic-tensile-loadings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40632.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">236</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3361</span> Novel CFRP Adhesive Joints and Structures for Offshore Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Abusrea">M. R. Abusrea</a>, <a href="https://publications.waset.org/abstracts/search?q=Shiyi%20Jiang"> Shiyi Jiang</a>, <a href="https://publications.waset.org/abstracts/search?q=Dingding%20Chen"> Dingding Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Kazuo%20Arakawa"> Kazuo Arakawa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Novel wind-lens turbine designs can augment power output. Vacuum-Assisted Resin Transfer Molding (VARTM) is used to form large and complex structures from a Carbon Fiber Reinforced Polymer (CFRP) composite. Typically, wind-lens turbine structures are fabricated in segments, and then bonded to form the final structure. This paper introduces five new adhesive joints, divided into two groups: One is constructed between dry carbon and CFRP fabrics, and the other is constructed with two dry carbon fibers. All joints and CFRP fabrics were made in our laboratory using VARTM manufacturing techniques. Specimens were prepared for tensile testing to measure joint performance. The results showed that the second group of joints achieved a higher tensile strength than the first group. On the other hand, the tensile fracture behavior of the two groups showed the same pattern of crack originating near the joint ends followed by crack propagation until fracture. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesive%20joints" title="adhesive joints">adhesive joints</a>, <a href="https://publications.waset.org/abstracts/search?q=CFRP" title=" CFRP"> CFRP</a>, <a href="https://publications.waset.org/abstracts/search?q=VARTM" title=" VARTM"> VARTM</a>, <a href="https://publications.waset.org/abstracts/search?q=resin%20transfer%20molding" title=" resin transfer molding "> resin transfer molding </a> </p> <a href="https://publications.waset.org/abstracts/29575/novel-cfrp-adhesive-joints-and-structures-for-offshore-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29575.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">436</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3360</span> Adhesive Connections in Timber: A Comparison between Rough and Smooth Wood Bonding Surfaces </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Valentina%20Di%20Maria">Valentina Di Maria</a>, <a href="https://publications.waset.org/abstracts/search?q=Anton%20Ianakiev"> Anton Ianakiev</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of adhesive anchors for wooden constructions is an efficient technology to connect and design timber members in new timber structures and to rehabilitate the damaged structural members of historical buildings. Due to the lack of standard regulation in this specific area of structural design, designers’ choices are still supported by test analysis that enables knowledge, and the prediction, of the structural behavior of glued in rod joints. The paper outlines an experimental research activity aimed at identifying the tensile resistance capacity of several new adhesive joint prototypes made of epoxy resin, steel bar and timber, Oak and Douglas Fir species. The development of new adhesive connectors has been carried out by using epoxy to glue stainless steel bars into pre-drilled holes, characterized by smooth and rough internal surfaces, in timber samples. The realization of a threaded contact surface using a specific drill bit has led to an improved bond between wood and epoxy. The applied changes have also reduced the cost of the joints’ production. The paper presents the results of this parametric analysis and a Finite Element analysis that enables identification and study of the internal stress distribution in the proposed adhesive anchors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=glued%20in%20rod%20joints" title="glued in rod joints">glued in rod joints</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive%20anchors" title=" adhesive anchors"> adhesive anchors</a>, <a href="https://publications.waset.org/abstracts/search?q=timber" title=" timber"> timber</a>, <a href="https://publications.waset.org/abstracts/search?q=epoxy" title=" epoxy"> epoxy</a>, <a href="https://publications.waset.org/abstracts/search?q=rough%20contact%20surface" title="rough contact surface">rough contact surface</a>, <a href="https://publications.waset.org/abstracts/search?q=threaded%20hole%20shape" title=" threaded hole shape"> threaded hole shape</a> </p> <a href="https://publications.waset.org/abstracts/22485/adhesive-connections-in-timber-a-comparison-between-rough-and-smooth-wood-bonding-surfaces" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22485.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">551</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3359</span> Test Procedures for Assessing the Peel Strength and Cleavage Resistance of Adhesively Bonded Joints with Elastic Adhesives under Detrimental Service Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Barlang">Johannes Barlang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adhesive bonding plays a pivotal role in various industrial applications, ranging from automotive manufacturing to aerospace engineering. The peel strength of adhesives, a critical parameter reflecting the ability of an adhesive to withstand external forces, is crucial for ensuring the integrity and durability of bonded joints. This study provides a synopsis of the methodologies, influencing factors, and significance of peel testing in the evaluation of adhesive performance. Peel testing involves the measurement of the force required to separate two bonded substrates under controlled conditions. This study systematically reviews the different testing techniques commonly applied in peel testing, including the widely used 180-degree peel test and the T-peel test. Emphasis is placed on the importance of selecting an appropriate testing method based on the specific characteristics of the adhesive and the application requirements. The influencing factors on peel strength are multifaceted, encompassing adhesive properties, substrate characteristics, environmental conditions, and test parameters. Through an in-depth analysis, this study explores how factors such as adhesive formulation, surface preparation, temperature, and peel rate can significantly impact the peel strength of adhesively bonded joints. Understanding these factors is essential for optimizing adhesive selection and application processes in real-world scenarios. Furthermore, the study highlights the role of peel testing in quality control and assurance, aiding manufacturers in maintaining consistent adhesive performance and ensuring the reliability of bonded structures. The correlation between peel strength and long-term durability is discussed, shedding light on the predictive capabilities of peel testing in assessing the service life of adhesive bonds. In conclusion, this study underscores the significance of peel testing as a fundamental tool for characterizing adhesive performance. By delving into testing methodologies, influencing factors, and practical implications, this study contributes to the broader understanding of adhesive behavior and fosters advancements in adhesive technology across diverse industrial sectors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesively%20bonded%20joints" title="adhesively bonded joints">adhesively bonded joints</a>, <a href="https://publications.waset.org/abstracts/search?q=cleavage%20resistance" title=" cleavage resistance"> cleavage resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=elastic%20adhesives" title=" elastic adhesives"> elastic adhesives</a>, <a href="https://publications.waset.org/abstracts/search?q=peel%20strength" title=" peel strength"> peel strength</a> </p> <a href="https://publications.waset.org/abstracts/178935/test-procedures-for-assessing-the-peel-strength-and-cleavage-resistance-of-adhesively-bonded-joints-with-elastic-adhesives-under-detrimental-service-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/178935.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">95</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3358</span> Determination of Mechanical Properties of Adhesives via Digital Image Correlation (DIC) Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Murat%20Demir%20Aydin">Murat Demir Aydin</a>, <a href="https://publications.waset.org/abstracts/search?q=Elanur%20Celebi"> Elanur Celebi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adhesively bonded joints are used as an alternative to traditional joining methods due to the important advantages they provide. The most important consideration in the use of adhesively bonded joints is that these joints have appropriate requirements for their use in terms of safety. In order to ensure control of this condition, damage analysis of the adhesively bonded joints should be performed by determining the mechanical properties of the adhesives. When the literature is investigated; it is generally seen that the mechanical properties of adhesives are determined by traditional measurement methods. In this study, to determine the mechanical properties of adhesives, the Digital Image Correlation (DIC) method, which can be an alternative to traditional measurement methods, has been used. The DIC method is a new optical measurement method which is used to determine the parameters of displacement and strain in an appropriate and correct way. In this study, tensile tests of Thick Adherent Shear Test (TAST) samples formed using DP410 liquid structural adhesive and steel materials and bulk tensile specimens formed using and DP410 liquid structural adhesive was performed. The displacement and strain values of the samples were determined by DIC method and the shear stress-strain curves of the adhesive for TAST specimens and the tensile strain curves of the bulk adhesive specimens were obtained. Various methods such as numerical methods are required as conventional measurement methods (strain gauge, mechanic extensometer, etc.) are not sufficient in determining the strain and displacement values of the very thin adhesive layer such as TAST samples. As a result, the DIC method removes these requirements and easily achieves displacement measurements with sufficient accuracy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=structural%20adhesive" title="structural adhesive">structural adhesive</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesively%20bonded%20joints" title=" adhesively bonded joints"> adhesively bonded joints</a>, <a href="https://publications.waset.org/abstracts/search?q=digital%20image%20correlation" title=" digital image correlation"> digital image correlation</a>, <a href="https://publications.waset.org/abstracts/search?q=thick%20adhered%20shear%20test%20%28TAST%29" title=" thick adhered shear test (TAST)"> thick adhered shear test (TAST)</a> </p> <a href="https://publications.waset.org/abstracts/90385/determination-of-mechanical-properties-of-adhesives-via-digital-image-correlation-dic-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90385.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">321</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3357</span> Adhesive Bonded Joints Characterization and Crack Propagation in Composite Materials under Cyclic Impact Fatigue and Constant Amplitude Fatigue Loadings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Andres%20Bautista">Andres Bautista</a>, <a href="https://publications.waset.org/abstracts/search?q=Alicia%20Porras"> Alicia Porras</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20P.%20Casas"> Juan P. Casas</a>, <a href="https://publications.waset.org/abstracts/search?q=Maribel%20Silva"> Maribel Silva</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Colombian aeronautical industry has stimulated research in the mechanical behavior of materials under different loading conditions aircrafts are generally exposed during its operation. The Calima T-90 is the first military aircraft built in the country, used for primary flight training of Colombian Air Force Pilots, therefore, it may be exposed to adverse operating situations such as hard landings which cause impact loads on the aircraft that might produce the impact fatigue phenomenon. The Calima T-90 structure is mainly manufactured by composites materials generating assemblies and subassemblies of different components of it. The main method of bonding these components is by using adhesive joints. Each type of adhesive bond must be studied on its own since its performance depends on the conditions of the manufacturing process and operating characteristics. This study aims to characterize the typical adhesive joints of the aircraft under usual loads. To this purpose, the evaluation of the effect of adhesive thickness on the mechanical performance of the joint under quasi-static loading conditions, constant amplitude fatigue and cyclic impact fatigue using single lap-joint specimens will be performed. Additionally, using a double cantilever beam specimen, the influence of the thickness of the adhesive on the crack growth rate for mode I delamination failure, as a function of the critical energy release rate will be determined. Finally, an analysis of the fracture surface of the test specimens considering the mechanical interaction between the substrate (composite) and the adhesive, provide insights into the magnitude of the damage, the type of failure mechanism that occurs and its correlation with the way crack propagates under the proposed loading conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesive" title="adhesive">adhesive</a>, <a href="https://publications.waset.org/abstracts/search?q=composites" title=" composites"> composites</a>, <a href="https://publications.waset.org/abstracts/search?q=crack%20propagation" title=" crack propagation"> crack propagation</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue" title=" fatigue"> fatigue</a> </p> <a href="https://publications.waset.org/abstracts/89027/adhesive-bonded-joints-characterization-and-crack-propagation-in-composite-materials-under-cyclic-impact-fatigue-and-constant-amplitude-fatigue-loadings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89027.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">204</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3356</span> Failure Load Investigations in Adhesively Bonded Single-Strap Joints of Dissimilar Materials Using Cohesive Zone Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20Paygozar">B. Paygozar</a>, <a href="https://publications.waset.org/abstracts/search?q=S.A.%20Dizaji"> S.A. Dizaji</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adhesive bonding is a highly valued type of fastening mechanical parts in complex structures, where joining some simple components is always needed. This method is of several merits, such as uniform stress distribution, appropriate bonding strength, and fatigue performance, and lightness, thereby outweighing other sorts of bonding methods. This study is to investigate the failure load of adhesive single-strap joints, including adherends of different sizes and materials. This kind of adhesive joint is very practical in different industries, especially when repairing the existing joints or attaching substrates of dissimilar materials. In this research, experimentally validated numerical analyses carried out in a commercial finite element package, ABAQUS, are utilized to extract the failure loads of the joints, based on the cohesive zone model. In addition, the stress analyses of the substrates are performed in order to acquire the effects of lowering the thickness of the substrates on the stress distribution inside them to avoid designs suffering from the necking or failure of the adherends. It was found out that this method of bonding is really feasible in joining dissimilar materials which can be utilized in a variety of applications. Moreover, the stress analyses indicated the minimum thickness for the adherends so as to avoid the failure of them. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cohesive%20zone%20model" title="cohesive zone model">cohesive zone model</a>, <a href="https://publications.waset.org/abstracts/search?q=dissimilar%20materials" title=" dissimilar materials"> dissimilar materials</a>, <a href="https://publications.waset.org/abstracts/search?q=failure%20load" title=" failure load"> failure load</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20strap%20joint" title=" single strap joint"> single strap joint</a> </p> <a href="https://publications.waset.org/abstracts/114757/failure-load-investigations-in-adhesively-bonded-single-strap-joints-of-dissimilar-materials-using-cohesive-zone-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/114757.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">123</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3355</span> Review for Mechanical Tests of Corner Joints on Wooden Windows and Effects to the Stiffness </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Milan%20Podlena">Milan Podlena</a>, <a href="https://publications.waset.org/abstracts/search?q=Stepan%20Hysek"> Stepan Hysek</a>, <a href="https://publications.waset.org/abstracts/search?q=Jiri%20%20Prochazka"> Jiri Prochazka</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Bohm"> Martin Bohm</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20Bomba"> Jan Bomba</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Corner joints are the weakest part of windows, where the members are connected together. Since the dimensions of the windows started become bigger, the strength requirements for corner joints started to increase as well. Therefore, the aim of this study was to test the samples of corner joints of wooden windows. Moisture content of test specimens was stabilized in the climate chamber. After conditioning, test specimens were loaded in the laboratory conditions onto an universal testing machine and the failure load was measured. Data was recalculated by using goniometric, bending moment and stiffness equation to the stiffness coefficients and the bending moments were investigated. The results showed difference that was observed for the mortise with tenon joint and the dowel joint. This difference was explained by a varied adhesive bond area, which is related to the dimensions of dowels (diameter and length) as well. The bending moments and stiffness ware (except of type of corner joint) also affected by type of used adhesive, type of dowels and wood species. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=corner%20joint" title="corner joint">corner joint</a>, <a href="https://publications.waset.org/abstracts/search?q=wooden%20window" title=" wooden window"> wooden window</a>, <a href="https://publications.waset.org/abstracts/search?q=bending%20moment" title=" bending moment"> bending moment</a>, <a href="https://publications.waset.org/abstracts/search?q=stiffness" title=" stiffness"> stiffness</a> </p> <a href="https://publications.waset.org/abstracts/82921/review-for-mechanical-tests-of-corner-joints-on-wooden-windows-and-effects-to-the-stiffness" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82921.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">218</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3354</span> Non-Linear Finite Element Analysis of Bonded Single Lap Joint in Composite Material</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Benhamena">A. Benhamena</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Aminallah"> L. Aminallah</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Aid"> A. Aid</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Benguediab"> M. Benguediab</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Amrouche"> A. Amrouche</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The goal of this work is to analyze the severity of interfacial stress distribution in the single lap adhesive joint under tensile loading. The three-dimensional and non-linear finite element method based on the computation of the peel and shear stresses was used to analyze the fracture behaviour of single lap adhesive joint. The effect of the loading magnitude and the overlap length on the distribution of peel and shear stresses was highlighted. A good correlation was found between the FEM simulations and the analytical results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminum%202024-T3%20alloy" title="aluminum 2024-T3 alloy">aluminum 2024-T3 alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=single-lap%20adhesive%20joints" title=" single-lap adhesive joints"> single-lap adhesive joints</a>, <a href="https://publications.waset.org/abstracts/search?q=Interface%20stress%20distributions" title=" Interface stress distributions"> Interface stress distributions</a>, <a href="https://publications.waset.org/abstracts/search?q=material%20nonlinear%20analysis" title=" material nonlinear analysis"> material nonlinear analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive" title=" adhesive"> adhesive</a>, <a href="https://publications.waset.org/abstracts/search?q=bending%20moment" title=" bending moment"> bending moment</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20method" title=" finite element method"> finite element method</a> </p> <a href="https://publications.waset.org/abstracts/16813/non-linear-finite-element-analysis-of-bonded-single-lap-joint-in-composite-material" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16813.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">570</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3353</span> About the Interface Bonding Safety of Adhesively Bonded Concrete Joints Under Cracking: A Fracture Energetic Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Brandtner-Hafner%20Martin">Brandtner-Hafner Martin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adhesives are increasingly being used in the construction sector. On the one hand, this concerns dowel reinforcements using chemical anchors. On the other hand, the sealing and repair of cracks in structural concrete components are still on the rise. In the field of bonding, the interface between the joined materials is the most critical area. Therefore, it is of immense importance to characterize and investigate this section sufficiently by fracture analysis. Since standardized mechanical test methods are not sufficiently capable of doing this, recourse is made to an innovative concept based on fracture energy. Therefore, a series of experimental tests were performed using the so-called GF-principle to study the interface bonding safety of adhesively bonded concrete joints. Several different structural adhesive systems based on epoxy, CA/A hybrid, PUR, MS polymer, dispersion, and acrylate were selected for bonding concrete substrates. The results show that stable crack propagation and prevention of uncontrolled failure in bonded concrete joints depend very much on the adhesive system used, and only fracture analytical evaluation methods can provide empirical information on this. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=interface%20bonding%20safety" title="interface bonding safety">interface bonding safety</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesively%20bonded%20concrete%20joints" title=" adhesively bonded concrete joints"> adhesively bonded concrete joints</a>, <a href="https://publications.waset.org/abstracts/search?q=GF-principle" title=" GF-principle"> GF-principle</a>, <a href="https://publications.waset.org/abstracts/search?q=fracture%20analysis" title=" fracture analysis"> fracture analysis</a> </p> <a href="https://publications.waset.org/abstracts/137943/about-the-interface-bonding-safety-of-adhesively-bonded-concrete-joints-under-cracking-a-fracture-energetic-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/137943.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">304</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3352</span> Stress Analysis of Tubular Bonded Joints under Torsion and Hygrothermal Effects Using DQM</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mansour%20Mohieddin%20Ghomshei">Mansour Mohieddin Ghomshei</a>, <a href="https://publications.waset.org/abstracts/search?q=Reza%20Shahi"> Reza Shahi </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Laminated composite tubes with adhesively bonded joints are widely used in aerospace and automotive industries as well as oil and gas industries. In this research, adhesively tubular single lap joints subjected to torsional and hygrothermal loadings are studied using the differential quadrature method (DQM). The analysis is based on the classical shell theory. At first, an approximate closed form solution is developed by omitting the lateral deflections in the connecting tubes. Using the analytical model, the circumferential displacements in tubes and the shear stresses in the interfacing adhesive layer are determined. Then, a numerical formulation is presented using DQM in which the lateral deflections are taken into account. By using the DQM formulation, the circumferential and radial displacements in tubes as well as shear and peel stresses in the adhesive layer are calculated. Results obtained from the proposed DQM solutions are compared well with those of the approximate analytical model and those of some published references. Finally using the DQM model, parametric studies are carried out to investigate the influence of various parameters such as adhesive layer thickness, torsional loading, overlap length, tubes radii, relative humidity, and temperature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesively%20bonded%20joint" title="adhesively bonded joint">adhesively bonded joint</a>, <a href="https://publications.waset.org/abstracts/search?q=differential%20quadrature%20method%20%28DQM%29" title=" differential quadrature method (DQM)"> differential quadrature method (DQM)</a>, <a href="https://publications.waset.org/abstracts/search?q=hygrothermal" title=" hygrothermal"> hygrothermal</a>, <a href="https://publications.waset.org/abstracts/search?q=laminated%20composite%20tube" title=" laminated composite tube"> laminated composite tube</a> </p> <a href="https://publications.waset.org/abstracts/33196/stress-analysis-of-tubular-bonded-joints-under-torsion-and-hygrothermal-effects-using-dqm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33196.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">302</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3351</span> In-Plane Shear Tests of Prefabricated Masonry Panel System with Two-Component Polyurethane Adhesive</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ekkehard%20Fehling">Ekkehard Fehling</a>, <a href="https://publications.waset.org/abstracts/search?q=Paul%20Capewell"> Paul Capewell</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, the importance of masonry glued by polyurethane adhesive has increased. In 2021, the Institute of Structural Engineering of the University of Kassel was commissioned to carry out quasi-static in-plane shear tests on prefabricated brick masonry panel systems with 2K PUR adhesive in order to investigate the load-bearing behavior during earthquakes. In addition to the usual measurement of deformations using displacement transducers, all tests were documented using an optical measuring system (“GOM”), which was used to determine the surface strains and deformations of the test walls. To compare the results with conventional mortar walls, additional reference tests were carried out on test specimens with thin-bed mortar joints. This article summarizes the results of the test program and provides a comparison between the load-bearing behavior of masonry bonded with polyurethane adhesive and thin bed mortar in order to enable realistic non-linear modeling. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=masonry" title="masonry">masonry</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20tests" title=" shear tests"> shear tests</a>, <a href="https://publications.waset.org/abstracts/search?q=in-plane" title=" in-plane"> in-plane</a>, <a href="https://publications.waset.org/abstracts/search?q=polyurethane%20adhesive" title=" polyurethane adhesive"> polyurethane adhesive</a> </p> <a href="https://publications.waset.org/abstracts/178809/in-plane-shear-tests-of-prefabricated-masonry-panel-system-with-two-component-polyurethane-adhesive" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/178809.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">72</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3350</span> Design of Composite Joints from Carbon Fibre for Automotive Parts</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20Hemath%20Kumar">G. Hemath Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Mohit"> H. Mohit</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Karthick"> K. Karthick</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One of the most important issues in the composite technology is the repairing of parts of aircraft structures which is manufactured from composite materials. In such applications and also for joining various composite parts together, they are fastened together either using adhesives or mechanical fasteners. The tensile strength of these joints was carried out using Universal Testing Machine (UTM). A parametric study was also conducted to compare the performance of the hybrid joint with varying adherent thickness, adhesive thickness and overlap length. The composition of the material is combination of epoxy resin and carbon fibre under the method of reinforcement. To utilize the full potential of composite materials as structural elements, the strength and stress distribution of these joints must be understood. The study of tensile strength in the members involved under various design conditions and various joints were took place. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20fiber" title="carbon fiber">carbon fiber</a>, <a href="https://publications.waset.org/abstracts/search?q=FRP%20composite" title=" FRP composite"> FRP composite</a>, <a href="https://publications.waset.org/abstracts/search?q=MMC" title=" MMC"> MMC</a>, <a href="https://publications.waset.org/abstracts/search?q=automotive" title=" automotive"> automotive</a> </p> <a href="https://publications.waset.org/abstracts/10217/design-of-composite-joints-from-carbon-fibre-for-automotive-parts" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10217.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">409</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3349</span> Development of Adhesive from Prosopis african Seed Endosperm (OKPEYI)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Florence%20%20Chinyere%20Nwangwu">Florence Chinyere Nwangwu</a>, <a href="https://publications.waset.org/abstracts/search?q=Rosemary%20Ene"> Rosemary Ene</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An experimental study was carried out to develop an adhesive from Prosopis africana seed endosperm. The Prosopis seeds for this work were obtained from Enugu State in the South East part of Nigeria. The Prosopis seeds were prepared by separating the Prosopis endosperm from the seed coat and cotyledon. The dry adhesive gotten from the endosperm was later dissolved to get the adhesive solution. Confirmatory tests like viscosity, density, pH, and binding strength were carried out. The effect of time, temperature, concentration on the yield and properties of the adhesive were investigated. The results obtained showed that increase in concentration, time, temperature decreases the viscosity of the Prosopis adhesive and yield of Prosopis endosperm. It was also deduced that increase in viscosity increases the binding strength of the Prosopis adhesive. The percentage of the adhesive yield from Prosopis endosperm showed that the commercialization of the seed in Nigeria will be possible and profitable. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesive" title="adhesive">adhesive</a>, <a href="https://publications.waset.org/abstracts/search?q=Prosopis" title=" Prosopis"> Prosopis</a>, <a href="https://publications.waset.org/abstracts/search?q=viscosity" title=" viscosity"> viscosity</a>, <a href="https://publications.waset.org/abstracts/search?q=endosperm" title=" endosperm"> endosperm</a> </p> <a href="https://publications.waset.org/abstracts/20735/development-of-adhesive-from-prosopis-african-seed-endosperm-okpeyi" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20735.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">309</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3348</span> Experimental Investigation of the Out-of-Plane Dynamic Behavior of Adhesively Bonded Composite Joints at High Strain Rates</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sonia%20Sassi">Sonia Sassi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostapha%20Tarfaoui"> Mostapha Tarfaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamza%20Ben%20Yahia"> Hamza Ben Yahia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this investigation, an experimental technique in which the dynamic response, damage kinetic and heat dissipation are measured simultaneously during high strain rates on adhesively bonded joints materials. The material used in this study is widely used in the design of structures for military applications. It was composed of a 45° Bi-axial fiber-glass mat of 0.286 mm thickness in a Polyester resin matrix. In adhesive bonding, a NORPOL Polyvinylester of 1 mm thickness was used to assemble the composite substrate. The experimental setup consists of a compression Split Hopkinson Pressure Bar (SHPB), a high-speed infrared camera and a high-speed Fastcam rapid camera. For the dynamic compression tests, 13 mm x 13 mm x 9 mm samples for out-of-plane tests were considered from 372 to 1030 s-1. Specimen surface is controlled and monitored in situ and in real time using the high-speed camera which acquires the damage progressive in specimens and with the infrared camera which provides thermal images in time sequence. Preliminary compressive stress-strain vs. strain rates data obtained show that the dynamic material strength increases with increasing strain rates. Damage investigations have revealed that the failure mainly occurred in the adhesive/adherent interface because of the brittle nature of the polymeric adhesive. Results have shown the dependency of the dynamic parameters on strain rates. Significant temperature rise was observed in dynamic compression tests. Experimental results show that the temperature change depending on the strain rate and the damage mode and their maximum exceed 100 °C. The dependence of these results on strain rate indicates that there exists a strong correlation between damage rate sensitivity and heat dissipation, which might be useful when developing damage models under dynamic loading tacking into account the effect of the energy balance of adhesively bonded joints. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesive%20bonded%20joints" title="adhesive bonded joints">adhesive bonded joints</a>, <a href="https://publications.waset.org/abstracts/search?q=Hopkinson%20bars" title=" Hopkinson bars"> Hopkinson bars</a>, <a href="https://publications.waset.org/abstracts/search?q=out-of-plane%20tests" title=" out-of-plane tests"> out-of-plane tests</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20compression%20properties" title=" dynamic compression properties"> dynamic compression properties</a>, <a href="https://publications.waset.org/abstracts/search?q=damage%20mechanisms" title=" damage mechanisms"> damage mechanisms</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20dissipation" title=" heat dissipation"> heat dissipation</a> </p> <a href="https://publications.waset.org/abstracts/90187/experimental-investigation-of-the-out-of-plane-dynamic-behavior-of-adhesively-bonded-composite-joints-at-high-strain-rates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90187.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">212</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3347</span> Evaluation of the Elastic Mechanical Properties of a Hybrid Adhesive Material</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moudar%20H.%20A.%20Zgoul">Moudar H. A. Zgoul</a>, <a href="https://publications.waset.org/abstracts/search?q=Amin%20Al%20Zamer"> Amin Al Zamer</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adhesive materials and adhesion have been the focal point of multiple research works related to numerous applications, particularly, aerospace, and aviation industries. To enhance the properties of conventional adhesive materials, additives have been introduced to the mix in order to enhance their mechanical and physical properties by creating a hybrid adhesive material. The evaluation of the mechanical properties of such hybrid adhesive materials is thus of an essential requirement for the purpose of properly modeling their behavior accurately. This paper presents an approach/tool to simulate the behavior such hybrid adhesives in a way that will allow researchers to better understand their behavior while in service. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesive%20materials" title="adhesive materials">adhesive materials</a>, <a href="https://publications.waset.org/abstracts/search?q=analysis" title=" analysis"> analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20adhesives" title=" hybrid adhesives"> hybrid adhesives</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a> </p> <a href="https://publications.waset.org/abstracts/83532/evaluation-of-the-elastic-mechanical-properties-of-a-hybrid-adhesive-material" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/83532.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">420</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3346</span> Prediction of Crack Propagation in Bonded Joints Using Fracture Mechanics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Reza%20Hedayati">Reza Hedayati</a>, <a href="https://publications.waset.org/abstracts/search?q=Meysam%20Jahanbakhshi"> Meysam Jahanbakhshi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, Fracture Mechanics is used to predict crack propagation in the adhesive jointing aluminum and composite plates. Three types of loadings and two types of glass-epoxy composite sequences: [0/90]2s and [0/45/-45/90]s are considered for the composite plate. Therefore 2*3=6 cases are considered and their results are compared. The debonding initiation load, complete debonding load, crack face profile and load-displacement diagram have been compared for the six cases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fracture" title="fracture">fracture</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive%20joint" title=" adhesive joint"> adhesive joint</a>, <a href="https://publications.waset.org/abstracts/search?q=debonding" title=" debonding"> debonding</a>, <a href="https://publications.waset.org/abstracts/search?q=APDL" title=" APDL"> APDL</a>, <a href="https://publications.waset.org/abstracts/search?q=LEFM" title=" LEFM"> LEFM</a> </p> <a href="https://publications.waset.org/abstracts/23770/prediction-of-crack-propagation-in-bonded-joints-using-fracture-mechanics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23770.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">413</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3345</span> Experimental Investigation of the Static and Dynamic Behaviour of Double Lap Joints</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20I.%20Beloufa">H. I. Beloufa</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Tarfaoui"> M. Tarfaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For many applications, adhesively bonded assemblies have gained an increasing interest in the industry due to several advantages over welding, riveting and bolting, such as reduction of stress concentrations, lightness, low cost and easy manufacturing. This work is largely concerned to show the effects of the loading rate of the adhesively bonded joints under different speed rates. The tensile tests were conducted at four different rates; static (5mm/min, 50mm/min) and dynamic tests (1m/s, and 10m/s). An attempt was made to determine the damage kinetic and a comparison between the use of aluminium and composite laminate substrates is introduced. Aluminum T6082 and glass/vinylester laminated composite Substrates were used to construct aluminum/aluminum and laminate/laminate specimens. The adhesive used in this study was Araldite 2015. The results showed the effects of the loading rate évolution on the double joint strength. The comparison of the results of static and dynamic tests showed a raise of the strength of the specimens while the load velocity is elevated. In the case of composite substrates double joint lap, the stiffness increased by more than 60% between static and dynamic tests. However, in the case of aluminum substrates, the rigidity improved about 28% from static to moderately high velocity loading. For both aluminum and composite double joint lap, the strength increased by approximately 25% when the tensile velocity is increased from 5 mm/min to 50 mm/min (static tests). Nevertheless, the tensile velocity is extended to 1m/s the strength increased by 13% and 25% respectively for composite and aluminum substrates. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesive" title="adhesive">adhesive</a>, <a href="https://publications.waset.org/abstracts/search?q=double%20lap%20joints" title=" double lap joints"> double lap joints</a>, <a href="https://publications.waset.org/abstracts/search?q=static%20and%20dynamic%20behavior" title=" static and dynamic behavior"> static and dynamic behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=tensile%20tests" title=" tensile tests"> tensile tests</a> </p> <a href="https://publications.waset.org/abstracts/88423/experimental-investigation-of-the-static-and-dynamic-behaviour-of-double-lap-joints" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88423.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">196</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3344</span> Prediction of Fatigue Crack Propagation in Bonded Joints Using Fracture Mechanics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Reza%20Hedayati">Reza Hedayati</a>, <a href="https://publications.waset.org/abstracts/search?q=Meysam%20Jahanbakhshi"> Meysam Jahanbakhshi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fracture Mechanics is used to predict debonding propagation in adhesive joint between aluminum and composite plates. Three types of loadings and two types of glass-epoxy composite sequences: [0/90]2s and [0/45/-45/90]s are considered for the composite plate and their results are compared. It was seen that generally the cases with stacking sequence of [0/45/-45/90]s have much shorter lives than cases with [0/90]2s. It was also seen that in cases with λ=0 the ends of the debonding front propagates forward more than its middle, while in cases with λ=0.5 or λ=1 it is vice versa. Moreover, regardless of value of λ, the difference between the debonding propagations of the ends and the middle of the debonding front is very close in cases λ=0.5 and λ=1. Another main conclusion was the non-dimensionalized debonding front profile is almost independent of sequence type or the applied load value. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fatigue" title="fatigue">fatigue</a>, <a href="https://publications.waset.org/abstracts/search?q=debonding" title=" debonding"> debonding</a>, <a href="https://publications.waset.org/abstracts/search?q=Paris%20law" title=" Paris law"> Paris law</a>, <a href="https://publications.waset.org/abstracts/search?q=APDL" title=" APDL"> APDL</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive" title=" adhesive"> adhesive</a> </p> <a href="https://publications.waset.org/abstracts/23771/prediction-of-fatigue-crack-propagation-in-bonded-joints-using-fracture-mechanics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23771.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">363</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3343</span> Influence of Dry-Film Lubricants on Bond Strength and Corrosion Behaviour of 6xxx Aluminium Alloy Adhesive Joints for Automotive Industry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ralph%20Gruber">Ralph Gruber</a>, <a href="https://publications.waset.org/abstracts/search?q=Martina%20Hafner"> Martina Hafner</a>, <a href="https://publications.waset.org/abstracts/search?q=Theresia%20Greunz"> Theresia Greunz</a>, <a href="https://publications.waset.org/abstracts/search?q=Christian%20Reisecker"> Christian Reisecker</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20Stifter"> David Stifter</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The application of dry lubricant on aluminium for automotive industry is indispensable for a high-quality forming behaviour. To provide a short production time those forming aids will not be removed during the joining step. The aim of this study was the characterization of the influence of dry lubricants on the bond strength and the corrosion resistance of an 6xxx aluminium alloy for automotive applications. For this purpose, samples with a well-defined surface were lubricated with 1 g/m² dry lubricant and joined with a commercial thermosetting 1K-epoxy structural adhesive. The bond strength was characterized by means of lap shear test. To evaluate the corrosion resistance of the adhered aluminium samples an immersion test in 5 w% NaCl-solution was used. Based on fracture pattern analysis, the corrosion behaviour could be described. Dissolved corrosion products were examined using ICP-MS and NMR. By means of SEM/EDX the elementary composition of precipitated solids was determined. The results showed a dry lubricant independent bond strength for standard testing conditions. However, a significant effect of the forming aid, regarding the corrosion resistance of adhered aluminium samples against corrosive infiltration of the metal-adhesive-interface, was observed <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminium%20alloys" title="aluminium alloys">aluminium alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=dry%20film%20lubricants" title=" dry film lubricants"> dry film lubricants</a>, <a href="https://publications.waset.org/abstracts/search?q=automotive%20industry" title=" automotive industry"> automotive industry</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive%20bonding" title=" adhesive bonding"> adhesive bonding</a>, <a href="https://publications.waset.org/abstracts/search?q=corrosion" title=" corrosion"> corrosion</a> </p> <a href="https://publications.waset.org/abstracts/154769/influence-of-dry-film-lubricants-on-bond-strength-and-corrosion-behaviour-of-6xxx-aluminium-alloy-adhesive-joints-for-automotive-industry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154769.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">101</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3342</span> In Vitro Evaluation of a Chitosan-Based Adhesive to Treat Bone Fractures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Francisco%20J.%20Cedano">Francisco J. Cedano</a>, <a href="https://publications.waset.org/abstracts/search?q=Laura%20%20M.%20Pinz%C3%B3n"> Laura M. Pinzón</a>, <a href="https://publications.waset.org/abstracts/search?q=Camila%20I.%20Castro"> Camila I. Castro</a>, <a href="https://publications.waset.org/abstracts/search?q=Felipe%20Salcedo"> Felipe Salcedo</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20P.%20Casas"> Juan P. Casas</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20C.%20Brice%C3%B1o"> Juan C. Briceño</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Complex fractures located in articular surfaces are challenging to treat and their reduction with conventional treatments could compromise the functionality of the affected limb. An adhesive material to treat those fractures is desirable for orthopedic surgeons. This adhesive must be biocompatible and have a high adhesion to bone surface in an aqueous environment. The proposed adhesive is based on chitosan, given its adhesive and biocompatibility properties. Chitosan is mixed with calcium carbonate and hydroxyapatite, which contribute to structural support and a gel like behavior, and glutaraldehyde is used as a cross-linking agent to keep the adhesive mechanical performance in aqueous environment. This work aims to evaluate the rheological, adhesion strength and biocompatibility properties of the proposed adhesive using in vitro tests. The gelification process of the adhesive was monitored by oscillatory rheometry in an ARG-2 TA Instruments rheometer, using a parallel plate geometry of 22 mm and a gap of 1 mm. Time sweep experiments were conducted at 1 Hz frequency, 1% strain and 37°C from 0 to 2400 s. Adhesion strength is measured using a butt joint test with bovine cancellous bone fragments as substrates. The test is conducted at 5 min, 20min and 24 hours after curing the adhesive under water at 37°C. Biocompatibility is evaluated by a cytotoxicity test in a fibroblast cell culture using MTT assay and SEM. Rheological results concluded that the average gelification time of the adhesive is 820±107 s, also it reaches storage modulus magnitudes up to 106 Pa; The adhesive show solid-like behavior. Butt joint test showed 28.6 ± 9.2 kPa of tensile bond strength for the adhesive cured for 24 hours. Also there was no significant difference in adhesion strength between 20 minutes and 24 hours. MTT showed 70 ± 23 % of active cells at sixth day of culture, this percentage is estimated respect to a positive control (only cells with culture medium and bovine serum). High vacuum SEM observation permitted to localize and study the morphology of fibroblasts presented in the adhesive. All captured fibroblasts presented in SEM typical flatted structure with filopodia growth attached to adhesive surface. This project reports an adhesive based on chitosan that is biocompatible due to high active cells presented in MTT test and these results were correlated using SEM. Also, it has adhesion properties in conditions that model the clinical application, and the adhesion strength do not decrease between 5 minutes and 24 hours. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioadhesive" title="bioadhesive">bioadhesive</a>, <a href="https://publications.waset.org/abstracts/search?q=bone%20adhesive" title=" bone adhesive"> bone adhesive</a>, <a href="https://publications.waset.org/abstracts/search?q=calcium%20carbonate" title=" calcium carbonate"> calcium carbonate</a>, <a href="https://publications.waset.org/abstracts/search?q=chitosan" title=" chitosan"> chitosan</a>, <a href="https://publications.waset.org/abstracts/search?q=hydroxyapatite" title=" hydroxyapatite"> hydroxyapatite</a>, <a href="https://publications.waset.org/abstracts/search?q=glutaraldehyde" title=" glutaraldehyde"> glutaraldehyde</a> </p> <a href="https://publications.waset.org/abstracts/42598/in-vitro-evaluation-of-a-chitosan-based-adhesive-to-treat-bone-fractures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42598.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">321</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3341</span> Study of the Adhesive Bond Effect on Electro-Mechanical Behaviour of Coupled Piezo Structural System </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rahul%20S.%20Raj">Rahul S. Raj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electro-mechanical impedance technique is a recently developed non-destructive method for structural health monitoring. This system comprises of piezo electric patch, bonded to the structure using an adhesive/epoxy and electrically excited to determine the health of the component. The subjected electric field actuates the PZT patch harmonically and imparts a force on the host structure. The structural response thus produced by the host component is in the form of peaks and valleys which further shows the admittance signatures of the structure for the given excitation frequency. Adhesives have the capability to change the structural signatures, in EMI technique, by transforming conductance and susceptance signatures. The static approximation provide a justifiable result where adhesive bond lines are thin and stiff. The epoxy adhesive bonds limits design flexibility due to poor bond strengths, hence to enhance the performance of the joints, a new technique is developed for joining PZT, i.e. the alloy bonding technique. It is a metallic joining compound which contains many active elements including Titanium, that reacts with the tenacious surface films of the ceramic and composites to create excellent bonds. This alloy-based bonding technique will be used for better strain interaction and rigorous stress transfer between PZT patch and the host structure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=EMI%20technique" title="EMI technique">EMI technique</a>, <a href="https://publications.waset.org/abstracts/search?q=conductance" title=" conductance"> conductance</a>, <a href="https://publications.waset.org/abstracts/search?q=susceptance" title=" susceptance"> susceptance</a>, <a href="https://publications.waset.org/abstracts/search?q=admittance" title=" admittance"> admittance</a>, <a href="https://publications.waset.org/abstracts/search?q=alloy%20bonding" title=" alloy bonding"> alloy bonding</a> </p> <a href="https://publications.waset.org/abstracts/125920/study-of-the-adhesive-bond-effect-on-electro-mechanical-behaviour-of-coupled-piezo-structural-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/125920.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">119</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=mixed%20adhesive%20joints&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=mixed%20adhesive%20joints&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=mixed%20adhesive%20joints&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=mixed%20adhesive%20joints&page=5">5</a></li> <li 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