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analysis</title> <meta name="description" content="Search results for: residual analysis"> <meta name="keywords" content="residual analysis"> <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 d-lg-none 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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="residual analysis"> <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> 28308</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: residual analysis</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28308</span> The Influence of Residual Stress on Hardness and Microstructure in Railway Rails</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammet%20Emre%20Turan">Muhammet Emre Turan</a>, <a href="https://publications.waset.org/abstracts/search?q=Sait%20%C3%96z%C3%A7elik"> Sait 脰z莽elik</a>, <a href="https://publications.waset.org/abstracts/search?q=Yavuz%20Sun"> Yavuz Sun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In railway rails, residual stress was measured and the values of residual stress were associated with hardness and micro structure in this study. At first, three rails as one meter long were taken and residual stresses were measured by cutting method according to the EN 13674-1 standardization. In this study, strain gauge that is an electrical apparatus was used. During the cutting, change in resistance in rail gave us residual stress value via computer program. After residual stress measurement, Brinell hardness distribution were performed for head parts of rails. Thus, the relationship between residual stress and hardness were established. In addition to that, micro structure analysis was carried out by optical microscope. The results show that, the micro structure and hardness value was changed with residual stress. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title="residual stress">residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=hardness" title=" hardness"> hardness</a>, <a href="https://publications.waset.org/abstracts/search?q=micro%20structure" title=" micro structure"> micro structure</a>, <a href="https://publications.waset.org/abstracts/search?q=rail" title=" rail"> rail</a>, <a href="https://publications.waset.org/abstracts/search?q=strain%20gauge" title=" strain gauge "> strain gauge </a> </p> <a href="https://publications.waset.org/abstracts/15651/the-influence-of-residual-stress-on-hardness-and-microstructure-in-railway-rails" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15651.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">602</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">28307</span> A Finite Memory Residual Generation Filter for Fault Detection</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pyung%20Soo%20Kim">Pyung Soo Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Eung%20Hyuk%20Lee"> Eung Hyuk Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Mun%20Suck%20Jang"> Mun Suck Jang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the current paper, a residual generation filter with finite memory structure is proposed for fault detection. The proposed finite memory residual generation filter provides the residual by real-time filtering of fault vector using only the most recent finite observations and inputs on the window. It is shown that the residual given by the proposed residual generation filter provides the exact fault for noise-free systems. Finally, to illustrate the capability of the proposed residual generation filter, numerical examples are performed for the discretized DC motor system having the multiple sensor faults. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residual%20generation%20filter" title="residual generation filter">residual generation filter</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20memory%20structure" title=" finite memory structure"> finite memory structure</a>, <a href="https://publications.waset.org/abstracts/search?q=kalman%20filter" title=" kalman filter"> kalman filter</a>, <a href="https://publications.waset.org/abstracts/search?q=fast%20detection" title=" fast detection"> fast detection</a> </p> <a href="https://publications.waset.org/abstracts/35140/a-finite-memory-residual-generation-filter-for-fault-detection" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35140.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">698</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">28306</span> Investigation of Gas Tungsten Arc Welding Parameters on Residual Stress of Heat Affected Zone in Inconel X750 Super Alloy Welding Using Finite Element Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kimia%20Khoshdel%20Vajari">Kimia Khoshdel Vajari</a>, <a href="https://publications.waset.org/abstracts/search?q=Saber%20Saffar"> Saber Saffar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Reducing the residual stresses caused by welding is desirable for the industry. The effect of welding sequence, as well as the effect of yield stress on the number of residual stresses generated in Inconel X750 superalloy sheets and beams, have been investigated. The finite element model used in this research is a three-dimensional thermal and mechanical model, and the type of analysis is indirect coupling. This analysis is done in two stages. First, thermal analysis is performed, and then the thermal changes of the first analysis are used as the applied load in the second analysis. ABAQUS has been used for modeling, and the Dflux subroutine has been used in the Fortran programming environment to move the arc and the molten pool. The results of this study show that the amount of tensile residual stress in symmetric, discontinuous, and symmetric-discontinuous welds is reduced to a maximum of 27%, 54%, and 37% compared to direct welding, respectively. The results also show that the amount of residual stresses created by welding increases linearly with increasing yield stress with a slope of 40%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title="residual stress">residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=X750%20superalloy" title=" X750 superalloy"> X750 superalloy</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element" title=" finite element"> finite element</a>, <a href="https://publications.waset.org/abstracts/search?q=welding" title=" welding"> welding</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20analysis" title=" thermal analysis"> thermal analysis</a> </p> <a href="https://publications.waset.org/abstracts/157205/investigation-of-gas-tungsten-arc-welding-parameters-on-residual-stress-of-heat-affected-zone-in-inconel-x750-super-alloy-welding-using-finite-element-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157205.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">118</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">28305</span> Free Residual Chlorine and Bacteriological Contamination in Addis Ababa Water Supply System, Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aklilu%20Zeleke">Aklilu Zeleke</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A cross-sectional study was conducted in order to understand the effect of wet and dry seasons on the free residual chlorine and bacteriological contamination of the Addis Ababa (Ethiopia) water supply system. Water samples were taken at 30 selected distribution points and analyzed for Free Residual Chlorine and bacteriological analysis total coliforms and fecal coliform). It was found that some of the bacteriological data and Free Residual Chlorine levels are below the recommended values and beyond the maximum tolerable limits recommended by World Health Organization and Ethiopian National Standards. Water quality during the dry season is better than that of the wet season. There is a strong relationship between Free Residual Chlorine levels in drinking water and its bacteriological quality. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=addis%20ababa" title="addis ababa">addis ababa</a>, <a href="https://publications.waset.org/abstracts/search?q=wet%20season" title=" wet season"> wet season</a>, <a href="https://publications.waset.org/abstracts/search?q=dry%20season" title=" dry season"> dry season</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20residual%20chlorine" title=" free residual chlorine"> free residual chlorine</a> </p> <a href="https://publications.waset.org/abstracts/168079/free-residual-chlorine-and-bacteriological-contamination-in-addis-ababa-water-supply-system-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/168079.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">78</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">28304</span> Effect of Friction Parameters on the Residual Bagging Behaviors of Denim Fabrics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Gazzah">M. Gazzah</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Jaouachi"> B. Jaouachi</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Sakli"> F. Sakli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research focuses on the yarn-to-yarn and metal-to-fabric friction effects on the residual bagging behavior expressed by residual bagging height, volume and recovery of some denim fabrics. The results show, that both residual bagging height and residual bagging volume, which is determined using image analysis method, are significantly affected due to the most influential fabric parameter variations, the weft yarns density and the mean frictional coefficients. After the applied number of fatigue cycles, the findings revealed that the weft yarn rigidity contributes on fabric bagging behavior accurately. Among the tested samples, our results show that the elastic fabrics present a high recovery ability to give low bagging height and volume values. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bagging%20recovery" title="bagging recovery">bagging recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=denim%20fabric" title=" denim fabric"> denim fabric</a>, <a href="https://publications.waset.org/abstracts/search?q=metal-to-fabric%20friction" title=" metal-to-fabric friction"> metal-to-fabric friction</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20bagging%20height" title=" residual bagging height"> residual bagging height</a>, <a href="https://publications.waset.org/abstracts/search?q=yarn-to-yarn%20friction" title=" yarn-to-yarn friction"> yarn-to-yarn friction</a> </p> <a href="https://publications.waset.org/abstracts/25575/effect-of-friction-parameters-on-the-residual-bagging-behaviors-of-denim-fabrics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25575.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">577</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">28303</span> The Interaction between Hydrogen and Surface Stress in Stainless Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Osamu%20Takakuwa">Osamu Takakuwa</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuta%20Mano"> Yuta Mano</a>, <a href="https://publications.waset.org/abstracts/search?q=Hitoshi%20Soyama"> Hitoshi Soyama</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper reveals the interaction between hydrogen and surface stress in austenitic stainless steel by X-ray diffraction stress measurement and thermal desorption analysis before and after being charged with hydrogen. The surface residual stress was varied by surface finishing using several disc polishing agents. The obtained results show that the residual stress near surface had a significant effect on hydrogen absorption behavior, that is, tensile residual stress promoted the hydrogen absorption and compressive one did opposite. Also, hydrogen induced equi-biaxial stress and this stress has a linear correlation with hydrogen content. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20embrittlement" title="hydrogen embrittlement">hydrogen embrittlement</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20finishing" title=" surface finishing"> surface finishing</a>, <a href="https://publications.waset.org/abstracts/search?q=stainless%20steel" title=" stainless steel"> stainless steel</a> </p> <a href="https://publications.waset.org/abstracts/16765/the-interaction-between-hydrogen-and-surface-stress-in-stainless-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16765.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">381</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">28302</span> Estimation of Residual Stresses in Thick Walled Cylinder by Radial Basis Artificial Neural </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Heidari">Mohammad Heidari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper a method for high strength steel is proposed of residual stresses in autofrettaged tubes by combination of artificial neural networks is presented. Many different thick walled cylinders that were subjected to different conditions were studied. At first, the residual stress is calculated by analytical solution. Then by changing of the parameters that influenced in residual stresses such as percentage of autofrettage, internal pressure, wall ratio of cylinder, material property of cylinder, bauschinger and hardening effect factor, a neural network is created. These parameters are the input of network. The output of network is residual stress. Numerical data, employed for training the network and capabilities of the model in predicting the residual stress has been verified. The output obtained from neural network model is compared with numerical results, and the amount of relative error has been calculated. Based on this verification error, it is shown that the radial basis function of neural network has the average error of 2.75% in predicting residual stress of thick wall cylinder. Further analysis of residual stress of thick wall cylinder under different input conditions has been investigated and comparison results of modeling with numerical considerations shows a good agreement, which also proves the feasibility and effectiveness of the adopted approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thick%20walled%20cylinder" title="thick walled cylinder">thick walled cylinder</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=radial%20basis" title=" radial basis"> radial basis</a>, <a href="https://publications.waset.org/abstracts/search?q=artificial%20neural%20network" title=" artificial neural network"> artificial neural network</a> </p> <a href="https://publications.waset.org/abstracts/34495/estimation-of-residual-stresses-in-thick-walled-cylinder-by-radial-basis-artificial-neural" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34495.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">416</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">28301</span> Residual Lifetime Estimation for Weibull Distribution by Fusing Expert Judgements and Censored Data</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xiang%20Jia">Xiang Jia</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhijun%20Cheng"> Zhijun Cheng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The residual lifetime of a product is the operation time between the current time and the time point when the failure happens. The residual lifetime estimation is rather important in reliability analysis. To predict the residual lifetime, it is necessary to assume or verify a particular distribution that the lifetime of the product follows. And the two-parameter Weibull distribution is frequently adopted to describe the lifetime in reliability engineering. Due to the time constraint and cost reduction, a life testing experiment is usually terminated before all the units have failed. Then the censored data is usually collected. In addition, other information could also be obtained for reliability analysis. The expert judgements are considered as it is common that the experts could present some useful information concerning the reliability. Therefore, the residual lifetime is estimated for Weibull distribution by fusing the censored data and expert judgements in this paper. First, the closed-forms concerning the point estimate and confidence interval for the residual lifetime under the Weibull distribution are both presented. Next, the expert judgements are regarded as the prior information and how to determine the prior distribution of Weibull parameters is developed. For completeness, the cases that there is only one, and there are more than two expert judgements are both focused on. Further, the posterior distribution of Weibull parameters is derived. Considering that it is difficult to derive the posterior distribution of residual lifetime, a sample-based method is proposed to generate the posterior samples of Weibull parameters based on the Monte Carlo Markov Chain (MCMC) method. And these samples are used to obtain the Bayes estimation and credible interval for the residual lifetime. Finally, an illustrative example is discussed to show the application. It demonstrates that the proposed method is rather simple, satisfactory, and robust. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=expert%20judgements" title="expert judgements">expert judgements</a>, <a href="https://publications.waset.org/abstracts/search?q=information%20fusion" title=" information fusion"> information fusion</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20lifetime" title=" residual lifetime"> residual lifetime</a>, <a href="https://publications.waset.org/abstracts/search?q=Weibull%20distribution" title=" Weibull distribution"> Weibull distribution</a> </p> <a href="https://publications.waset.org/abstracts/110210/residual-lifetime-estimation-for-weibull-distribution-by-fusing-expert-judgements-and-censored-data" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/110210.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">142</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">28300</span> The Relationship between Fatigue Crack Growth and Residual Stress in Rails</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Husem">F. Husem</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20E.%20Turan"> M. E. Turan</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Sun"> Y. Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Ahlatci"> H. Ahlatci</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Tozlu"> I. Tozlu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Residual stress and fatigue crack growth rates are important to determine mechanical behavior of rails. This study aims to make relationship between residual stress and fatigue crack growth values in rails. For this purpose, three R260 quality rails (0.6-0.8% C, 0.6-1.25 Mn) were chosen. Residual stress of samples was measured by cutting method that is related in railway standard. Then samples were machined for fatigue crack growth test and analyze was completed according to the ASTM E647 standard which gives information about parameters of rails for this test. Microstructure characterizations were examined by Light Optic Microscope (LOM). The results showed that residual stress change with fatigue crack growth rate. The sample has highest residual stress exhibits highest crack growth rate and pearlitic structure can be seen clearly for all samples by microstructure analyze. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title="residual stress">residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue%20crack%20growth" title=" fatigue crack growth"> fatigue crack growth</a>, <a href="https://publications.waset.org/abstracts/search?q=R260" title=" R260"> R260</a>, <a href="https://publications.waset.org/abstracts/search?q=SEM" title=" SEM"> SEM</a>, <a href="https://publications.waset.org/abstracts/search?q=ASTM%20E647" title=" ASTM E647"> ASTM E647</a> </p> <a href="https://publications.waset.org/abstracts/56215/the-relationship-between-fatigue-crack-growth-and-residual-stress-in-rails" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56215.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">327</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">28299</span> Fatigue Crack Behaviour in a Residual Stress Field at Fillet Welds in Ship Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anurag%20Niranjan">Anurag Niranjan</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Fitzpatrick"> Michael Fitzpatrick</a>, <a href="https://publications.waset.org/abstracts/search?q=Yin%20Jin%20Janin"> Yin Jin Janin</a>, <a href="https://publications.waset.org/abstracts/search?q=Jazeel%20Chukkan"> Jazeel Chukkan</a>, <a href="https://publications.waset.org/abstracts/search?q=Niall%20Smyth"> Niall Smyth</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fillet welds are used in joining longitudinal stiffeners in ship structures. Welding residual stresses in fillet welds are generally distributed in a non-uniform manner, as shown in previous research the residual stress redistribution occurs under the cyclic loading that is experienced by such joints during service, and the combination of the initial residual stress, local constraints, and loading can alter the stress field in ways that are extremely difficult to predict. As the residual stress influences the crack propagation originating from the toe of the fillet welds, full understanding of the residual stress field and how it evolves is very important for structural integrity calculations. Knowledge of the residual stress redistribution in the presence of a flaw is therefore required for better fatigue life prediction. Moreover, defect assessment procedures such as BS7910 offer very limited guidance for flaw acceptance and the associated residual stress redistribution in the assessment of fillet welds. Therefore the objective of this work is to study a surface-breaking flaw at the weld toe region in a fillet weld under cyclic load, in conjunction with residual stress measurement at pre-defined crack depths. This work will provide details of residual stress redistribution under cyclic load in the presence of a crack. The outcome of this project will inform integrity assessment with respect to the treatment of residual stress in fillet welds. Knowledge of the residual stress evolution for this weld geometry will be greatly beneficial for flaw tolerance assessments (BS 7910, API 591). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fillet%20weld" title="fillet weld">fillet weld</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue" title=" fatigue"> fatigue</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=structure%20integrity" title=" structure integrity"> structure integrity</a> </p> <a href="https://publications.waset.org/abstracts/156016/fatigue-crack-behaviour-in-a-residual-stress-field-at-fillet-welds-in-ship-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/156016.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">142</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">28298</span> Electro-Discharge Drilling in Residual Stress Measurement of Annealed St.37 Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Gholami">H. Gholami</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Jalali%20Azizpour"> M. Jalali Azizpour </a> </p> <p class="card-text"><strong>Abstract:</strong></p> For materials such as hard coating whose stresses state are difficult to obtain by a widely used method called high-speed hole-drilling method (ASTM Standard E837). It is important to develop a non contact method. This process itself imposes an additional stresses. The through thickness residual stress of st37 steel using elector-discharge was investigated. The strain gage and dynamic strain indicator used in all cases was FRS-2-11 rosette type and TML 221, respectively. The average residual stress in depth of 320 碌m was -6.47 MPa. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=HVOF" title="HVOF">HVOF</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20spray" title=" thermal spray"> thermal spray</a>, <a href="https://publications.waset.org/abstracts/search?q=WC-Co" title=" WC-Co "> WC-Co </a> </p> <a href="https://publications.waset.org/abstracts/20109/electro-discharge-drilling-in-residual-stress-measurement-of-annealed-st37-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20109.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">311</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">28297</span> Assessment of Residual Stress on HDPE Pipe Wall Thickness</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20Sersab">D. Sersab</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Aberkane"> M. Aberkane</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Residual stresses, in high-density polyethylene (HDPE) pipes, result from a nonhomogeneous cooling rate that occurs between the inner and outer surfaces during the extrusion process in manufacture. Most known methods of measurements to determine the magnitude and profile of the residual stresses in the pipe wall thickness are layer removal and ring slitting method. The combined layer removal and ring slitting methods described in this paper involves measurement of the circumferential residual stresses with minimal local disturbance. The existing methods used for pipe geometry (ring slitting method) gives a single residual stress value at the bore. The layer removal method which is used more in flat plate specimen is implemented with ring slitting method. The method permits stress measurements to be made directly at different depth in the pipe wall and a well-defined residual stress profile was consequently obtained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title="residual stress">residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=layer%20removal" title=" layer removal"> layer removal</a>, <a href="https://publications.waset.org/abstracts/search?q=ring%20splitting" title=" ring splitting"> ring splitting</a>, <a href="https://publications.waset.org/abstracts/search?q=HDPE" title=" HDPE"> HDPE</a>, <a href="https://publications.waset.org/abstracts/search?q=wall%20thickness" title=" wall thickness "> wall thickness </a> </p> <a href="https://publications.waset.org/abstracts/25357/assessment-of-residual-stress-on-hdpe-pipe-wall-thickness" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25357.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">338</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">28296</span> The Effect of Material Properties and Volumetric Changes in Phase Transformation to the Final Residual Stress of Welding Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djarot%20B.%20Darmadi">Djarot B. Darmadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The wider growing Finite Element Method (FEM) application is caused by its benefits of cost saving and environment friendly. Also, by using FEM a deep understanding of certain phenomenon can be achieved. This paper observed the role of material properties and volumetric change when Solid State Phase Transformation (SSPT) takes place in residual stress formation due to a welding process of ferritic steels through coupled Thermo-Metallurgy-Mechanical (TMM) analysis. The correctness of FEM residual stress prediction was validated by experiment. From parametric study of the FEM model, it can be concluded that the material properties change tend to over-predicts residual stress in the weld center whilst volumetric change tend to underestimates it. The best final result is the compromise of both by incorporates them in the model which has a better result compared to a model without SSPT. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title="residual stress">residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=ferritic%20steels" title=" ferritic steels"> ferritic steels</a>, <a href="https://publications.waset.org/abstracts/search?q=SSPT" title=" SSPT"> SSPT</a>, <a href="https://publications.waset.org/abstracts/search?q=coupled-TMM" title=" coupled-TMM"> coupled-TMM</a> </p> <a href="https://publications.waset.org/abstracts/39495/the-effect-of-material-properties-and-volumetric-changes-in-phase-transformation-to-the-final-residual-stress-of-welding-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39495.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">270</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">28295</span> Reliability Based Optimal Design of Laterally Loaded Pile with Limited Residual Strain Energy Capacity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Movahedi%20Rad">M. Movahedi Rad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, a general approach to the reliability based limit analysis of laterally loaded piles is presented. In engineering practice, the uncertainties play a very important role. The aim of this study is to evaluate the lateral load capacity of free head and fixed-head long pile when the plastic limit analysis is considered. In addition to the plastic limit analysis to control the plastic behaviour of the structure, uncertain bound on the complementary strain energy of the residual forces is also applied. This bound has a significant effect for the load parameter. The solution to reliability-based problems is obtained by a computer program which is governed by the reliability index calculation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=reliability" title="reliability">reliability</a>, <a href="https://publications.waset.org/abstracts/search?q=laterally%20loaded%20pile" title=" laterally loaded pile"> laterally loaded pile</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20strain%20energy" title=" residual strain energy"> residual strain energy</a>, <a href="https://publications.waset.org/abstracts/search?q=probability" title=" probability"> probability</a>, <a href="https://publications.waset.org/abstracts/search?q=limit%20analysis" title=" limit analysis"> limit analysis</a> </p> <a href="https://publications.waset.org/abstracts/32265/reliability-based-optimal-design-of-laterally-loaded-pile-with-limited-residual-strain-energy-capacity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32265.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">349</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">28294</span> Computation of Residual Stresses in Human Face Due to Growth</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Askari">M. A. Askari</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Nazari"> M. A. Nazari</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Perrier"> P. Perrier</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Payan"> Y. Payan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Growth and remodeling of biological structures have gained lots of attention over the past decades. Determining the response of the living tissues to the mechanical loads is necessary for a wide range of developing fields such as, designing of prosthetics and optimized surgery operations. It is a well-known fact that biological structures are never stress-free, even when externally unloaded. The exact origin of these residual stresses is not clear, but theoretically growth and remodeling is one of the main sources. Extracting body organs from medical imaging, does not produce any information regarding the existing residual stresses in that organ. The simplest cause of such stresses is the gravity since an organ grows under its influence from its birth. Ignoring such residual stresses might cause erroneous results in numerical simulations. Accounting for residual stresses due to tissue growth can improve the accuracy of mechanical analysis results. In this paper, we have implemented a computational framework based on fixed-point iteration to determine the residual stresses due to growth. Using nonlinear continuum mechanics and the concept of fictitious configuration we find the unknown stress-free reference configuration which is necessary for mechanical analysis. To illustrate the method, we apply it to a finite element model of healthy human face whose geometry has been extracted from medical images. We have computed the distribution of residual stress in facial tissues, which can overcome the effect of gravity and cause that tissues remain firm. Tissue wrinkles caused by aging could be a consequence of decreasing residual stress and not counteracting the gravity. Considering these stresses has important application in maxillofacial surgery. It helps the surgeons to predict the changes after surgical operations and their consequences. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=growth" title="growth">growth</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20tissue" title=" soft tissue"> soft tissue</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</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/37091/computation-of-residual-stresses-in-human-face-due-to-growth" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37091.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">354</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">28293</span> Evaluation of Residual Stresses in Human Face as a Function of Growth</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Askari">M. A. Askari</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Nazari"> M. A. Nazari</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Perrier"> P. Perrier</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Payan"> Y. Payan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Growth and remodeling of biological structures have gained lots of attention over the past decades. Determining the response of living tissues to mechanical loads is necessary for a wide range of developing fields such as prosthetics design or computerassisted surgical interventions. It is a well-known fact that biological structures are never stress-free, even when externally unloaded. The exact origin of these residual stresses is not clear, but theoretically, growth is one of the main sources. Extracting body organ’s shapes from medical imaging does not produce any information regarding the existing residual stresses in that organ. The simplest cause of such stresses is gravity since an organ grows under its influence from birth. Ignoring such residual stresses might cause erroneous results in numerical simulations. Accounting for residual stresses due to tissue growth can improve the accuracy of mechanical analysis results. This paper presents an original computational framework based on gradual growth to determine the residual stresses due to growth. To illustrate the method, we apply it to a finite element model of a healthy human face reconstructed from medical images. The distribution of residual stress in facial tissues is computed, which can overcome the effect of gravity and maintain tissues firmness. Our assumption is that tissue wrinkles caused by aging could be a consequence of decreasing residual stress and thus not counteracting gravity. Taking into account these stresses seems therefore extremely important in maxillofacial surgery. It would indeed help surgeons to estimate tissues changes after surgery. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20method" title="finite element method">finite element method</a>, <a href="https://publications.waset.org/abstracts/search?q=growth" title=" growth"> growth</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20tissue" title=" soft tissue"> soft tissue</a> </p> <a href="https://publications.waset.org/abstracts/42023/evaluation-of-residual-stresses-in-human-face-as-a-function-of-growth" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42023.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">270</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">28292</span> Prediction and Optimization of Machining Induced Residual Stresses in End Milling of AISI 1045 Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wajid%20Ali%20Khan">Wajid Ali Khan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Extensive experimentation and numerical investigation are performed to predict the machining-induced residual stresses in the end milling of AISI 1045 steel, and an optimization code has been developed using the particle swarm optimization technique. Experiments were conducted using a single factor at a time and design of experiments approach. Regression analysis was done, and a mathematical model of the cutting process was developed, thus predicting the machining-induced residual stress with reasonable accuracy. The mathematical model served as the objective function to be optimized using particle swarm optimization. The relationship between the different cutting parameters and the output variables, force, and residual stresses has been studied. The combined effect of the process parameters, speed, feed, and depth of cut was examined, and it is understood that 85% of the variation of these variables can be attributed to these machining parameters under research. A 3D finite element model is developed to predict the cutting forces and the machining-induced residual stresses in end milling operation. The results were validated experimentally and against the Johnson-cook model available in the literature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residual%20stresses" title="residual stresses">residual stresses</a>, <a href="https://publications.waset.org/abstracts/search?q=end%20milling" title=" end milling"> end milling</a>, <a href="https://publications.waset.org/abstracts/search?q=1045%20steel" title=" 1045 steel"> 1045 steel</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a> </p> <a href="https://publications.waset.org/abstracts/157047/prediction-and-optimization-of-machining-induced-residual-stresses-in-end-milling-of-aisi-1045-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157047.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">102</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">28291</span> Simulation the Effect of Temperature on the Residual Stress in Shot Peening Process Using FEM Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Jalali%20Azizpour">M. Jalali Azizpour</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Mohammadi%20Majd"> H. Mohammadi Majd</a>, <a href="https://publications.waset.org/abstracts/search?q=A.R.%20Aboudi%20Asl"> A.R. Aboudi Asl</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Sajedipour"> D. Sajedipour</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Tawaf"> V. Tawaf</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sandblasting is a generally used surface treatment technique to improve the residual stress and adhesion of coatings to substrate. The goal of this work is to study the effect of temperature on the residual stress in sandblasting AISI1045 substrate. For this purpose a two dimensional axisymmetric model of shot impacting on an AISI 1045 disc was generated using ABAQUS version 6.10. The result shows for sandblasting temperature there is an optimum condition. In addition there are other effective factors that influence the fatigue life of parts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=modeling" title="modeling">modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=shot%20peen" title=" shot peen"> shot peen</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a> </p> <a href="https://publications.waset.org/abstracts/26894/simulation-the-effect-of-temperature-on-the-residual-stress-in-shot-peening-process-using-fem-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26894.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">586</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">28290</span> The Development of a Residual Stress Measurement Method for Roll Formed Products</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yong%20Sun">Yong Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Vladimir%20Luzin"> Vladimir Luzin</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhen%20Qian"> Zhen Qian</a>, <a href="https://publications.waset.org/abstracts/search?q=William%20J.%20T.%20Daniel"> William J. T. Daniel</a>, <a href="https://publications.waset.org/abstracts/search?q=Mingxing%20Zhang"> Mingxing Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Shichao%20Ding"> Shichao Ding</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The residual stresses in roll formed products are generally very high and un-predictable. This is due to the occurrence of redundant plastic deformation in roll forming process and it can cause various product defects. Although the residual stresses of a roll formed product consist of longitudinal and transverse residual stresses components, but the longitudinal residual stresses plays a key role to the product defects of a roll formed product and therefore, only the longitudinal residual stresses concerned by the roll forming scholars and engineers. However, how to inspect the residual stresses of a product quickly and economically as a routine operation is still a challenge. This paper introduces a residual stresses measurement method called slope cutting method to study the longitudinal residual stresses through layers geometrically to a roll formed products or a product with similar process such as a rolled sheet. The detailed measuring procedure is given and discussed. The residual stresses variation through the layer can be derived based on the variation of curvature in different layers and steps. The slope cutting method has been explored and validated by experimental study on a roll-formed square tube. The neutron diffraction method is applied to validate the accuracy of the newly proposed layering removal materials results. The two set results agree with each other very well and therefore, the method is expected to be a routine testing method to monitor the quality of a product been formed and that is a great impact to roll forming industry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=roll%20forming" title="roll forming">roll forming</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=measurement%20method" title=" measurement method"> measurement method</a>, <a href="https://publications.waset.org/abstracts/search?q=neutron%20diffraction" title=" neutron diffraction"> neutron diffraction</a> </p> <a href="https://publications.waset.org/abstracts/51177/the-development-of-a-residual-stress-measurement-method-for-roll-formed-products" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51177.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">364</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">28289</span> Study on Residual Stress Measurement of Inconel-718 under Different Lubricating Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Sandeep%20Kumar">M. Sandeep Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Vasu%20Velagapudi"> Vasu Velagapudi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Venugopal"> A. Venugopal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> When machining is carried out on a workpiece, residual stresses are induced in the workpiece due to nonuniform thermal and mechanical loads. These stresses play a vital role in the surface integrity of the final product or the output. Inconel 718 is commonly used in critical structural components of aircraft engines due to its properties at high temperatures. Therefore it is important to keep down the stresses induced due to machining. This can be achieved through proper lubricating conditions. In this work, experiments were carried out to check the influence of the developed nanofluid as cutting fluids on residual stresses developed during the course of machining. The results of MQL/Nanofluids were compared with MQL/Vegetable oil and dry machining lubricating condition. Results indicate the reduction in residual stress with the use of MQL/Nanofluid. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanofluids" title="nanofluids">nanofluids</a>, <a href="https://publications.waset.org/abstracts/search?q=MQL" title=" MQL"> MQL</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=Inconel-718" title=" Inconel-718"> Inconel-718</a> </p> <a href="https://publications.waset.org/abstracts/67072/study-on-residual-stress-measurement-of-inconel-718-under-different-lubricating-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67072.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">260</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">28288</span> A Regression Model for Residual-State Creep Failure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Deepak%20Raj%20Bhat">Deepak Raj Bhat</a>, <a href="https://publications.waset.org/abstracts/search?q=Ryuichi%20Yatabe"> Ryuichi Yatabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, a residual-state creep failure model was developed based on the residual-state creep test results of clayey soils. To develop the proposed model, the regression analyses were done by using the R. The model results of the failure time (tf) and critical displacement (未c) were compared with experimental results and found in close agreements to each others. It is expected that the proposed regression model for residual-state creep failure will be more useful for the prediction of displacement of different clayey soils in the future. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=regression%20model" title="regression model">regression model</a>, <a href="https://publications.waset.org/abstracts/search?q=residual-state%20creep%20failure" title=" residual-state creep failure"> residual-state creep failure</a>, <a href="https://publications.waset.org/abstracts/search?q=displacement%20prediction" title=" displacement prediction"> displacement prediction</a>, <a href="https://publications.waset.org/abstracts/search?q=clayey%20soils" title=" clayey soils"> clayey soils</a> </p> <a href="https://publications.waset.org/abstracts/50000/a-regression-model-for-residual-state-creep-failure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50000.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">408</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">28287</span> Experimental and Numerical Analysis of the Effects of Ball-End Milling Process upon Residual Stresses and Cutting Forces</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Belkacem%20Chebil%20Sonia">Belkacem Chebil Sonia</a>, <a href="https://publications.waset.org/abstracts/search?q=Bensalem%20Wacef"> Bensalem Wacef</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The majority of ball end milling models includes only the influence of cutting parameters (cutting speed, feed rate, depth of cut). Furthermore, this influence is studied in most of works on cutting force. Therefore, this study proposes an accurate ball end milling process modeling which includes also the influence of tool workpiece inclination. In addition, a characterization of residual stresses resulting of thermo mechanical loading in the workpiece was also presented. Moreover, the study of the influence of tool workpiece inclination and cutting parameters was made on residual stresses distribution. In order to achieve the predetermination of cutting forces and residual stresses during a milling operation, a thermo mechanical three-dimensional numerical model of ball end milling was developed. Furthermore, an experimental companion of ball end milling tests was realized on a 5-axis machining center to determine the cutting forces and characterize the residual stresses. The simulation results are compared with the experiment to validate the Finite Element Model and subsequently identify the optimum inclination angle and cutting parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ball%20end%20milling" title="ball end milling">ball end milling</a>, <a href="https://publications.waset.org/abstracts/search?q=cutting%20forces" title=" cutting forces"> cutting forces</a>, <a href="https://publications.waset.org/abstracts/search?q=cutting%20parameters" title=" cutting parameters"> cutting parameters</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=tool-workpiece%20inclination" title=" tool-workpiece inclination"> tool-workpiece inclination</a> </p> <a href="https://publications.waset.org/abstracts/46279/experimental-and-numerical-analysis-of-the-effects-of-ball-end-milling-process-upon-residual-stresses-and-cutting-forces" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46279.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">308</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">28286</span> A Comparative Study of the Effects of Vibratory Stress Relief and Thermal Aging on the Residual Stress of Explosives Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xuemei%20Yang">Xuemei Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Xin%20Sun"> Xin Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng%20Fu"> Cheng Fu</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiong%20Lan"> Qiong Lan</a>, <a href="https://publications.waset.org/abstracts/search?q=Chao%20Han"> Chao Han</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Residual stresses, which can be produced during the manufacturing process of plastic bonded explosive (PBX), play an important role in weapon system security and reliability. Residual stresses can and do change in service. This paper mainly studies the influence of vibratory stress relief (VSR) and thermal aging on residual stress of explosives. Firstly, the residual stress relaxation of PBX via different physical condition of VSR, such as vibration time, amplitude and dynamic strain, were studied by drill-hole technique. The result indicated that the vibratory amplitude, time and dynamic strain had a significant influence on the residual stress relief of PBX. The rate of residual stress relief of PBX increases first and then decreases with the increase of dynamic strain, amplitude and time, because the activation energy is too small to make the PBX yield plastic deformation at first. Then the dynamic strain, time and amplitude exceed a certain threshold, the residual stress changes show the same rule and decrease sharply, this sharply drop of residual stress relief rate may have been caused by over vibration. Meanwhile, the comparison between VSR and thermal aging was also studied. The conclusion is that the reduction ratio of residual stress after VSR process with applicable vibratory parameters could be equivalent to 73% of thermal aging with 7 days. In addition, the density attenuation rate, mechanical property, and dimensional stability with 3 months after VSR process was almost the same compared with thermal aging. However, compared with traditional thermal aging, VSR only takes a very short time, which greatly improves the efficiency of aging treatment for explosive materials. Therefore, the VSR could be a potential alternative technique in the industry of residual stress relaxation of PBX explosives. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=explosives" title="explosives">explosives</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stresses" title=" residual stresses"> residual stresses</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20aging" title=" thermal aging"> thermal aging</a>, <a href="https://publications.waset.org/abstracts/search?q=vibratory%20stress%20relief" title=" vibratory stress relief"> vibratory stress relief</a>, <a href="https://publications.waset.org/abstracts/search?q=VSR" title=" VSR"> VSR</a> </p> <a href="https://publications.waset.org/abstracts/103733/a-comparative-study-of-the-effects-of-vibratory-stress-relief-and-thermal-aging-on-the-residual-stress-of-explosives-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/103733.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">160</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">28285</span> Laser Shock Peening of Additively Manufactured Nickel-Based Superalloys</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Michael%20Munther">Michael Munther</a>, <a href="https://publications.waset.org/abstracts/search?q=Keivan%20Davami"> Keivan Davami</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One significant roadblock for additively manufactured (AM) parts is the buildup of residual tensile stresses during the fabrication process. These residual stresses are formed due to the intense localized thermal gradients and high cooling rates that cause non-uniform material expansion/contraction and mismatched strain profiles during powder-bed fusion techniques, such as direct metal laser sintering (DMLS). The residual stresses adversely affect the fatigue life of the AM parts. Moreover, if the residual stresses become higher than the material鈥檚 yield strength, they will lead to acute geometric distortion. These are limiting the applications and acceptance of AM components for safety-critical applications. Herein, we discuss laser shock peening method as an advanced technique for the manipulation of the residual stresses in AM parts. An X-ray diffraction technique is used for the measurements of the residual stresses before and after the laser shock peening process. Also, the hardness of the structures is measured using a nanoindentation technique. Maps of nanohardness and modulus are obtained from the nanoindentation, and a correlation is made between the residual stresses and the mechanical properties. The results indicate that laser shock peening is able to induce compressive residual stresses in the structure that mitigate the tensile residual stresses and increase the hardness of AM IN718, a superalloy, almost 20%. No significant changes were observed in the modulus after laser shock peening. The results strongly suggest that laser shock peening can be used as an advanced post-processing technique to optimize the service lives of critical components for various applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=additive%20manufacturing" title="additive manufacturing">additive manufacturing</a>, <a href="https://publications.waset.org/abstracts/search?q=Inconel%20718" title=" Inconel 718"> Inconel 718</a>, <a href="https://publications.waset.org/abstracts/search?q=laser%20shock%20peening" title=" laser shock peening"> laser shock peening</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stresses" title=" residual stresses"> residual stresses</a> </p> <a href="https://publications.waset.org/abstracts/111318/laser-shock-peening-of-additively-manufactured-nickel-based-superalloys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/111318.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">126</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">28284</span> Comparative Analysis of Residual Shear Depiction and Grain Distribution Characteristics of Slide Soil Profile Sections</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ephrem%20Getahun">Ephrem Getahun</a>, <a href="https://publications.waset.org/abstracts/search?q=Shengwen%20Qi"> Shengwen Qi</a>, <a href="https://publications.waset.org/abstracts/search?q=Songfeng%20Guo"> Songfeng Guo</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu%20Zou"> Yu Zou</a>, <a href="https://publications.waset.org/abstracts/search?q=Melesse%20Alemayehu"> Melesse Alemayehu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Residual shear characteristics of slide soil profile sections (SSPS) were examined using ring shear tests to know the relative residual shear behaviors among the sections of slide soil. The multistage-multiphase shearing techniques were employed to perform the experiment for each soil specimen continuously towards large displacements. The grain distribution analysis of SSPS samples was characterized by coarsening upward from bottom slip to the top sections; however, the slip surface was considered as a sheared zone that endorses their low shear resistance for failure. There is an average range of 1-2.5 mm axial displacement on each stage of loadings and phases of shearing that depicts the significant effect of dilation and compression of soil specimen. The middle section has the largest consolidation percentage (10-29%), and vertical displacement compared to other sections and showed high shear strengthening behavior having maximum shear stress of 189kPa at 240kPa loading compared to basal and top sections. It is found that the middle section of SSPS has relatively high shear resistance behavior for large displacement shearing. The residual shear assessment indicates that there is a significant influence of large displacement and rate on the friction coefficient behaviors; it resulted in shear weakening effect to attain their residual condition. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=comparison" title="comparison">comparison</a>, <a href="https://publications.waset.org/abstracts/search?q=displacements" title=" displacements"> displacements</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20shear%20stress" title=" residual shear stress"> residual shear stress</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20behavior" title=" shear behavior"> shear behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=slide%20soils" title=" slide soils"> slide soils</a> </p> <a href="https://publications.waset.org/abstracts/102831/comparative-analysis-of-residual-shear-depiction-and-grain-distribution-characteristics-of-slide-soil-profile-sections" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/102831.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">149</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">28283</span> A Numerical Study of the Interaction between Residual Stress Profiles Induced by Quasi-Static Plastification</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Guilherme%20F.%20Guimaraes">Guilherme F. Guimaraes</a>, <a href="https://publications.waset.org/abstracts/search?q=Alfredo%20R.%20De%20Faria"> Alfredo R. De Faria</a>, <a href="https://publications.waset.org/abstracts/search?q=Ronnie%20R.%20Rego"> Ronnie R. Rego</a>, <a href="https://publications.waset.org/abstracts/search?q=Andre%20L.%20R.%20D%27Oliveira"> Andre L. R. D'Oliveira</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The development of methods for predicting manufacturing phenomena steadily grows due to their high potential to contribute to the component鈥檚 performance and durability. One of the most relevant phenomena in manufacturing is the residual stress state development through the manufacturing chain. In most cases, the residual stresses have their origin due to heterogenous plastifications produced by the processes. Although a few manufacturing processes have been successfully approached by numerical modeling, there is still a lack of understanding on how these processes' interactions will affect the final stress state. The objective of this work is to analyze the influence of previous stresses on the residual stress state induced by plastic deformation of a quasi-static indentation. The model consists of a simplified approach of shot peening, modeling four cases with variations in indenter size and force. This model was validated through topography, measured by optical 3D focus-variation, and residual stress, measured with the X-ray diffraction technique. The validated model was then exposed to several initial stress states, and the effect on the final residual stress was analyzed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=plasticity" title="plasticity">plasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20method" title=" finite element method"> finite element method</a>, <a href="https://publications.waset.org/abstracts/search?q=manufacturing" title=" manufacturing"> manufacturing</a> </p> <a href="https://publications.waset.org/abstracts/135638/a-numerical-study-of-the-interaction-between-residual-stress-profiles-induced-by-quasi-static-plastification" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135638.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">206</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">28282</span> Interdialytic Acupuncture Is an Add-on Option for Preserving Residual Renal Function: A Case Series Report</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lai%20Tzu-Hsuan">Lai Tzu-Hsuan</a>, <a href="https://publications.waset.org/abstracts/search?q=Lai%20Jung-Nien"> Lai Jung-Nien</a>, <a href="https://publications.waset.org/abstracts/search?q=Lin%20Jaung-Geng"> Lin Jaung-Geng</a>, <a href="https://publications.waset.org/abstracts/search?q=Kao%20Shung-Te"> Kao Shung-Te</a>, <a href="https://publications.waset.org/abstracts/search?q=Hsuan-Kuang%20Jung"> Hsuan-Kuang Jung</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Whether acupuncture therapy contributes to preserving residual renal function (RRF) remains largely unknown. This case series evidenced the potential beneficial effects of acupuncture for preserving RRF in five patients with the end-stage renal disease under hemodialysis (HD) treatment. Participants: Five patients on HD receiving eight sessions of weekly 30-min interdialytic acupuncture (Inter-A) with residual urine volume (rUV) and residual glomerular filtration rate (rGFR) recorded once every two weeks were included for analysis. Outcomes: Changes in rUV and rGFR calculated using 24-hour urine collection data were analyzed to assess RRF. Variations in hemoglobin, urea Kt/V and serum albumin levels measured monthly were analyzed to evaluate HD adequacy. Results: After eight Inter-A sessions, mean (standard deviation (SD)) rUV and rGFR increased from 612 (184) ml/day and 1.48 (.94) ml/min/1.73 m2 at baseline to 803(289) ml/day and 2.04(1.17) ml/min/1.73m2 at 2- and 4-week follow-up, respectively. The mean percentage difference increased by 31% in rUV and 38% in rGFR. Routine measurements on HD adequacy also showed improvement. Conclusions: Acupuncture might be an optional add-on treatment for HD population with poor control of water; however, further well-designed controlled trials are warranted. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=end-stage%20renal%20disease" title="end-stage renal disease">end-stage renal disease</a>, <a href="https://publications.waset.org/abstracts/search?q=hemodialysis" title=" hemodialysis"> hemodialysis</a>, <a href="https://publications.waset.org/abstracts/search?q=acupuncture" title=" acupuncture"> acupuncture</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20renal%20function" title=" residual renal function"> residual renal function</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20urine%20volume" title=" residual urine volume"> residual urine volume</a> </p> <a href="https://publications.waset.org/abstracts/137391/interdialytic-acupuncture-is-an-add-on-option-for-preserving-residual-renal-function-a-case-series-report" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/137391.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">129</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">28281</span> Residual Life Estimation of K-out-of-N Cold Standby System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Qian%20Zhao">Qian Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Shi-Qi%20Liu"> Shi-Qi Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Bo%20Guo"> Bo Guo</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhi-Jun%20Cheng"> Zhi-Jun Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiao-Yue%20Wu"> Xiao-Yue Wu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cold standby redundancy is considered to be an effective mechanism for improving system reliability and is widely used in industrial engineering. However, because of the complexity of the reliability structure, there is little literature studying on the residual life of cold standby system consisting of complex components. In this paper, a simulation method is presented to predict the residual life of k-out-of-n cold standby system. In practical cases, failure information of a system is either unknown, partly unknown or completely known. Our proposed method is designed to deal with the three scenarios, respectively. Differences between the procedures are analyzed. Finally, numerical examples are used to validate the proposed simulation method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cold%20standby%20system" title="cold standby system">cold standby system</a>, <a href="https://publications.waset.org/abstracts/search?q=k-out-of-n" title=" k-out-of-n"> k-out-of-n</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20life" title=" residual life"> residual life</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation%20sampling" title=" simulation sampling"> simulation sampling</a> </p> <a href="https://publications.waset.org/abstracts/84899/residual-life-estimation-of-k-out-of-n-cold-standby-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/84899.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">401</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">28280</span> Residual Compressive Strength of Drilled Glass Fiber Reinforced Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Navid%20Zarif%20Karimi">Navid Zarif Karimi</a>, <a href="https://publications.waset.org/abstracts/search?q=Giangiacomo%20Minak"> Giangiacomo Minak</a>, <a href="https://publications.waset.org/abstracts/search?q=Parnian%20Kianfar"> Parnian Kianfar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Drilling is one of the most frequently used machining process for glass fiber reinforced polymer composites due to the need for structural joining. In drilling of composite laminates, interlaminar cracking, or delamination, has a detrimental effect on the compressive strength of these materials. The delamination can be controlled by adopting proper drilling condition. In this paper, the effect of feed rate, cutting speed and drill point angle on delamination and residual compressive strength of drilled GFRPs is studied. The objective is to find optimal conditions for maximum residual compressive strength. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite%20material" title="composite material">composite material</a>, <a href="https://publications.waset.org/abstracts/search?q=delamination" title=" delamination"> delamination</a>, <a href="https://publications.waset.org/abstracts/search?q=drilling" title=" drilling"> drilling</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20compressive%20strength" title=" residual compressive strength"> residual compressive strength</a> </p> <a href="https://publications.waset.org/abstracts/36171/residual-compressive-strength-of-drilled-glass-fiber-reinforced-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36171.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">458</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">28279</span> Properties of Poly(Amide-Imide) with Low Residual Stress for Electronic Material</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kwangin%20Kim">Kwangin Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Taewon%20Yoo"> Taewon Yoo</a>, <a href="https://publications.waset.org/abstracts/search?q=Haksoo%20Han"> Haksoo Han</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Polyimide is a superior polymer in the electronics industry, and we conducted a study to synthesize poly(amide-imide) at low temperatures. Poly(amide-imide) was synthesized at low-temperature curing to offer a thermal stable membrane with low residual stress and good processability. As a result, the low crack polymer with good processability could be used to various applications such as semiconductors, integrated circuits, coating materials, membranes, and display. The synthesis of poly(amide-imide) at low temperatures was confirmed by Fourier transform infrared spectroscopy (FT-IR). Thermal stabilities of the polymer was confirmed by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=poly%28amide-imide%29" title="poly(amide-imide)">poly(amide-imide)</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20stability" title=" thermal stability"> thermal stability</a> </p> <a href="https://publications.waset.org/abstracts/23349/properties-of-polyamide-imide-with-low-residual-stress-for-electronic-material" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23349.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">419</span> </span> </div> 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