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treatment</title> <meta name="description" content="Search results for: ultrasonic treatment"> <meta name="keywords" content="ultrasonic treatment"> <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="ultrasonic treatment"> <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> 8512</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: ultrasonic treatment</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8512</span> Effect of Ultrasonic Treatment on the Suspension Stability, Zeta Potential and Contact Angle of Celestite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kiraz%20Esmeli">Kiraz Esmeli</a>, <a href="https://publications.waset.org/abstracts/search?q=Alper%20Ozkan"> Alper Ozkan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, firstly, the effect of ultrasonic treatment on the stability of celestite suspension was investigated. In this context, the variations of the suspension stability with ultrasonic power, treatment time, immersion depth of ultrasonic probe, and treatment regime (batch and continuous) were determined. The experimental results showed that the suspension stability and zeta potential of celestite decreased with ultrasonic treatment. Also, the treatment time, immersion depth of probe, and treatment regime affected the stability of celestite suspension. Secondly, the effect of pre-treatment of the suspension with the ultrasonic process on the shear flocculation of celestite using sodium dodecyl sulfate (SDS) was studied and the variations of the flocculation, zeta potential, and contact angle of the mineral with SDS concentration were presented. It was found that the ultrasonic pre-treatment slightly improved the shear flocculation of celestite particles in accordance with the increase in the contact angles. In addition, the ultrasonic process again relatively reduced the magnitude of the negative potential of celestite particles in the presence of SDS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=celestite" title="celestite">celestite</a>, <a href="https://publications.waset.org/abstracts/search?q=contact%20angle" title=" contact angle"> contact angle</a>, <a href="https://publications.waset.org/abstracts/search?q=suspension%20stability" title=" suspension stability"> suspension stability</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20treatment" title=" ultrasonic treatment"> ultrasonic treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=zeta%20potential" title=" zeta potential"> zeta potential</a> </p> <a href="https://publications.waset.org/abstracts/89475/effect-of-ultrasonic-treatment-on-the-suspension-stability-zeta-potential-and-contact-angle-of-celestite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89475.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">226</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">8511</span> Ultrasonic Densitometry of Bone Tissue of Jaws and Phalanges of Fingers in Patients after Orthodontic Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Margarita%20Belousova">Margarita Belousova</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The ultrasonic densitometry (RU patent № 2541038) was used to assess the density of the bone tissue in the jaws of patients after orthodontic treatment. In addition, by ultrasonic densitometry assessed the state of the bone tissue in the region III phalanges of middle fingers in above mentioned patients. A comparative study was carried out in healthy volunteers of same age. It was established a significant decrease of the ultrasound wave speed and bone mineral density after active period of orthodontic treatment. Statistically, significant differences in bone mineral density of the fingers by ultrasonic densitometry in both groups of patients were not detected. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=intraoral%20ultrasonic%20densitometry" title="intraoral ultrasonic densitometry">intraoral ultrasonic densitometry</a>, <a href="https://publications.waset.org/abstracts/search?q=bone%20tissue%20density%20of%20jaws" title=" bone tissue density of jaws"> bone tissue density of jaws</a>, <a href="https://publications.waset.org/abstracts/search?q=bone%20tissue%20density%20of%20phalanges%20of%20fingers" title=" bone tissue density of phalanges of fingers"> bone tissue density of phalanges of fingers</a>, <a href="https://publications.waset.org/abstracts/search?q=orthodontic%20treatment" title=" orthodontic treatment"> orthodontic treatment</a> </p> <a href="https://publications.waset.org/abstracts/54572/ultrasonic-densitometry-of-bone-tissue-of-jaws-and-phalanges-of-fingers-in-patients-after-orthodontic-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54572.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">276</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">8510</span> Blood Clot Emulsification via Ultrasonic Thrombolysis Device</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sun%20Tao">Sun Tao</a>, <a href="https://publications.waset.org/abstracts/search?q=Lou%20Liang"> Lou Liang</a>, <a href="https://publications.waset.org/abstracts/search?q=Tan%20Xing%20Haw%20Marvin">Tan Xing Haw Marvin</a>, <a href="https://publications.waset.org/abstracts/search?q=Gu%20Yuandong%20Alex"> Gu Yuandong Alex</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Patients with blood clots in their brains can experience problems with their vision or speech, seizures and general weakness. To treat blood clots, clinicians presently have two options. The first involves drug therapy to thin the blood and thus reduce the clot. The second choice is to invasively remove the clot using a plastic tube called a catheter. Both approaches carry a high risk of bleeding, and invasive procedures, such as catheter intervention, can also damage the blood vessel wall and cause infection. Ultrasonic treatment as a potential alternative therapy to break down clots is attracting growing interests due to the reduced adverse effects. To demonstrate the concept, in this investigation a microfabricated ultrasonic device was electrically packaged with printed circuit board to treat healthy human blood. The red blood cells could be broken down after 3-hour ultrasonic treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microfabrication" title="microfabrication">microfabrication</a>, <a href="https://publications.waset.org/abstracts/search?q=blood%20clot" title=" blood clot"> blood clot</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20thrombolysis%20device" title=" ultrasonic thrombolysis device"> ultrasonic thrombolysis device</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20device" title=" ultrasonic device"> ultrasonic device</a> </p> <a href="https://publications.waset.org/abstracts/35989/blood-clot-emulsification-via-ultrasonic-thrombolysis-device" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35989.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">450</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">8509</span> Ultrasonic Densitometry of Alveolar Bone Jaw during Retention Period of Orthodontic Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Margarita%20A.%20Belousova">Margarita A. Belousova</a>, <a href="https://publications.waset.org/abstracts/search?q=Sergey%20N.%20Ermoliev"> Sergey N. Ermoliev</a>, <a href="https://publications.waset.org/abstracts/search?q=Nina%20K.%20Loginova"> Nina K. Loginova</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The method of intraoral ultrasound densitometry developed to diagnose mineral density of alveolar bone jaws during retention period of orthodontic treatment (Patent of Russian Federation № 2541038). It was revealed significant decrease of the ultrasonic wave speed and bone mineral density in patients with relapses dentition anomalies during retention period of orthodontic treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=intraoral%20ultrasonic%20densitometry" title="intraoral ultrasonic densitometry">intraoral ultrasonic densitometry</a>, <a href="https://publications.waset.org/abstracts/search?q=speed%20of%20sound" title=" speed of sound"> speed of sound</a>, <a href="https://publications.waset.org/abstracts/search?q=alveolar%20jaw%20bone" title=" alveolar jaw bone"> alveolar jaw bone</a>, <a href="https://publications.waset.org/abstracts/search?q=relapses%20of%20dentition%20anomalies" title=" relapses of dentition anomalies"> relapses of dentition anomalies</a>, <a href="https://publications.waset.org/abstracts/search?q=retention%20period%20of%20orthodontic%20treatment" title=" retention period of orthodontic treatment"> retention period of orthodontic treatment</a> </p> <a href="https://publications.waset.org/abstracts/22989/ultrasonic-densitometry-of-alveolar-bone-jaw-during-retention-period-of-orthodontic-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22989.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">382</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">8508</span> Effect of High Intensity Ultrasonic Treatment on the Micro Structure, Corrosion and Mechanical Behavior of ac4c Aluminium Alloy </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.Farrag%20Farrag">A.Farrag Farrag</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20El-Aziz%20Abdel%20Aziz"> A. M. El-Aziz Abdel Aziz</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Khlifa%20Khlifa"> W. Khlifa Khlifa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ultrasonic treatment is a promising process nowadays in the engineering field due to its high efficiency and it is a low-cost process. It enhances mechanical properties, corrosion resistance, and homogeneity of the microstructure. In this study, the effect of ultrasonic treatment and several casting conditions on microstructure, hardness and corrosion behavior of AC4C aluminum alloy was examined. Various ultrasonic treatments of the AC4C alloys were carried out to prepare billets for thixocasting process. Treatment temperatures varied from about 630oC and cooled down to under ultrasonic field. Treatment time was about 90s. A 600-watts ultrasonic system with 19.5 kHz and intensity of 170 W/cm2 was used. Billets were reheated to semisolid state and held for 5 minutes at 582 oC and temperatures (soaking) using high-frequency induction system, then thixocasted using a die casting machine. Microstructures of the thixocast parts were studied using optical and SEM microscopes. On the other hand, two samples were conventionally cast and poured at 634 oC and 750 oC. The microstructure showed a globular none dendritic grains for AC4C with the application of UST at 630-582 oC, Less dendritic grains when the sample was conventionally cast without the application of UST and poured at 624 oC and a fully dendritic microstructure When the sample was cast and poured at 750 oC without UST .The ultrasonic treatment during solidification proved that it has a positive influence on the microstructure as it produced the finest and globular grains thus it is expected to increase the mechanical properties of the alloy. Higher values of corrosion resistance and hardness were recorded for the ultrasound-treated sample in comparison to cast one. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20treatment" title="ultrasonic treatment">ultrasonic treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=aluminum%20alloys" title=" aluminum alloys"> aluminum alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=corrosion%20behaviour" title=" corrosion behaviour"> corrosion behaviour</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20behaviour" title=" mechanical behaviour"> mechanical behaviour</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a> </p> <a href="https://publications.waset.org/abstracts/51190/effect-of-high-intensity-ultrasonic-treatment-on-the-micro-structure-corrosion-and-mechanical-behavior-of-ac4c-aluminium-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51190.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">353</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">8507</span> Autonomous Control of Ultrasonic Transducer Drive System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dong-Keun%20Jeong">Dong-Keun Jeong</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong-Hyun%20Kim"> Jong-Hyun Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Woon-Ha%20Yoon"> Woon-Ha Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Hee-Je%20Kim"> Hee-Je Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to automatically operate the ultrasonic transducer drive system for sonicating aluminum, this paper proposes the ultrasonic transducer sensorless control algorithm. The resonance frequency shift and electrical impedance change is a common phenomenon in the state of the ultrasonic transducer. The proposed control algorithm make use of the impedance change of ultrasonic transducer according to the environment between air state and aluminum alloy state, it controls the ultrasonic transducer drive system autonomous without a sensor. The proposed sensorless autonomous ultrasonic transducer control algorithm was experimentally verified using a 3kW prototype ultrasonic transducer drive system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20transducer%20drive%20system" title="ultrasonic transducer drive system">ultrasonic transducer drive system</a>, <a href="https://publications.waset.org/abstracts/search?q=impedance%20change" title=" impedance change"> impedance change</a>, <a href="https://publications.waset.org/abstracts/search?q=sensorless" title=" sensorless"> sensorless</a>, <a href="https://publications.waset.org/abstracts/search?q=autonomous%20control%20algorithm" title=" autonomous control algorithm"> autonomous control algorithm</a> </p> <a href="https://publications.waset.org/abstracts/63698/autonomous-control-of-ultrasonic-transducer-drive-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63698.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">360</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">8506</span> Microcrystalline Cellulose (MCC) from Oil Palm Empty Fruit Bunch (EFB) Fiber via Simultaneous Ultrasonic and Alkali Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ridzuan%20Ramli">Ridzuan Ramli</a>, <a href="https://publications.waset.org/abstracts/search?q=Norhafzan%20Junadi"> Norhafzan Junadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20D.H.%20Beg"> Mohammad D.H. Beg</a>, <a href="https://publications.waset.org/abstracts/search?q=Rosli%20M.%20Yunus"> Rosli M. Yunus</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, microcrystalline cellulose (MCC) was extracted from oil palm empty fruit bunch (EFB) cellulose which was earlier isolated from oil palm EFB fibre. In order to isolate the cellulose, the chlorination method was carried out. Then, the MCC was prepared by simultaneous ultrasonic and alkali treatment from the isolated α-cellulose. Based on mass balance calculation, the yields for MCC obtained from EFB was 44%. For fiber characterization, it is observed that the chemical composition of the hemicellulose and lignin for all samples decreased while composition for cellulose increased. The structural property of the MCC was studied by X-ray diffraction (XRD) method and the result shows that the MCC produced is a cellulose-I polymorph, with 73% crystallinity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=oil%20palm%20empty%20fruit%20bunch" title="oil palm empty fruit bunch">oil palm empty fruit bunch</a>, <a href="https://publications.waset.org/abstracts/search?q=microcrystalline%20cellulose" title=" microcrystalline cellulose"> microcrystalline cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic" title=" ultrasonic"> ultrasonic</a>, <a href="https://publications.waset.org/abstracts/search?q=alkali%20treatment" title=" alkali treatment"> alkali treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=x-ray%20diffraction" title=" x-ray diffraction"> x-ray diffraction</a> </p> <a href="https://publications.waset.org/abstracts/17460/microcrystalline-cellulose-mcc-from-oil-palm-empty-fruit-bunch-efb-fiber-via-simultaneous-ultrasonic-and-alkali-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17460.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">414</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">8505</span> Ultrasound-Assisted Sol – Gel Synthesis of Nano-Boehmite for Biomedical Purposes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Olga%20Shapovalova">Olga Shapovalova</a>, <a href="https://publications.waset.org/abstracts/search?q=Vladimir%20Vinogradov"> Vladimir Vinogradov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Among many different sol – gel matrices only alumina can be successfully parenteral injected in the human body. And this is not surprising, because boehmite (aluminium oxyhydroxide) is the metal oxide approved by FDA and EMA for intravenous and intramuscular administrations, and also has been using for a longtime as adjuvant for producing of many modern vaccines. In our earlier study, it has been shown, that denaturation temperature of enzymes entrapped in sol-gel boehmite matrix increases for 30 – 60 °С with preserving of initial activity. It makes such matrices more attractive for long-term storage of non-stable drugs. In current work we present ultrasound-assisted sol-gel synthesis of nano-boehmite. This method provides bio-friendly, very stable, highly homogeneous alumina sol with using only water and aluminium isopropoxide as a precursor. Many parameters of the synthesis were studied in details: time of ultrasound treatment, US frequency, surface area, pore and nanoparticle size, zeta potential and others. Here we investigated the dependence of stability of colloidal sols and textural properties of the final composites as a function of the time of ultrasonic treatment. Chosen ultrasonic treatment time was between 30 and 180 minutes. Surface area, average pore diameter and total pore volume of the final composites were measured by surface and pore size analyzer Nova 1200 Quntachrome. It was shown that the matrices with ultrasonic treatment time equal to 90 minutes have the biggest surface area 431 ± 24 m2/g. On the other had such matrices have a smaller stability in comparison with the samples with ultrasonic treatment time equal to 120 minutes that have the surface area 390 ± 21 m2/g. It was shown that the stable sols could be formed only after 120 minutes of ultrasonic treatment, otherwise the white precipitate of boehmite is formed. We conclude that the optimal ultrasonic treatment time is 120 minutes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boehmite%20matrix" title="boehmite matrix">boehmite matrix</a>, <a href="https://publications.waset.org/abstracts/search?q=stabilisation" title=" stabilisation"> stabilisation</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasound-assisted%20sol-gel%20synthesis" title=" ultrasound-assisted sol-gel synthesis"> ultrasound-assisted sol-gel synthesis</a> </p> <a href="https://publications.waset.org/abstracts/24512/ultrasound-assisted-sol-gel-synthesis-of-nano-boehmite-for-biomedical-purposes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24512.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">267</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">8504</span> Non-Destructive Testing of Metal Pipes with Ultrasonic Sensors Based on Determination of Maximum Ultrasonic Frequency</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Herlina%20Abdul%20Rahim">Herlina Abdul Rahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Javad%20Abbaszadeh"> Javad Abbaszadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruzairi%20Abdul%20Rahim"> Ruzairi Abdul Rahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this research, the non-invasive ultrasonic transmission tomography is investigated. In order to model the ultrasonic wave scattering for different thickness of metal pipes, two-dimensional (2D) finite element modeling (FEM) has been utilized. The wall thickness variation of the metal pipe and its influence on propagation of the ultrasonic pressure wave are explored in this paper, includes frequency analysing in order to find the maximum applicable frequency. The simulation results have been compared to experimental data and are shown to provide key insight for this well-defined experimental case by explaining the achieved reconstructed images from experimental setup. Finally, the experimental results which are useful for further investigation for the application of ultrasonic transmission tomography in industry are illustrated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20transmission%20tomography" title="ultrasonic transmission tomography">ultrasonic transmission tomography</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20sensors" title=" ultrasonic sensors"> ultrasonic sensors</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20wave" title=" ultrasonic wave"> ultrasonic wave</a>, <a href="https://publications.waset.org/abstracts/search?q=non-invasive%20tomography" title=" non-invasive tomography"> non-invasive tomography</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20pipe" title=" metal pipe"> metal pipe</a> </p> <a href="https://publications.waset.org/abstracts/50272/non-destructive-testing-of-metal-pipes-with-ultrasonic-sensors-based-on-determination-of-maximum-ultrasonic-frequency" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50272.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">359</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">8503</span> Explantation of Osseo-Integrated Implant Using Electrosurgery and Ultrasonic Instrumentation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Stefano%20Andrea%20Denes">Stefano Andrea Denes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of dental implants to rehabilitate edentulous patients has become a well-established and effective treatment option; however, despite its high success rate, this treatment is not free of complications. The fracture of implant body is a rare cause of failure but when it does occur it can present technical challenges. In this article, we report the complete removal of a fractured osseointegrated implant using electrosurgery and ultrasonic instrumentation. The postoperative course was uneventful, no bleeding, infection, or hematoma formation was observed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dental%20implant" title="dental implant">dental implant</a>, <a href="https://publications.waset.org/abstracts/search?q=oral%20surgery" title=" oral surgery"> oral surgery</a>, <a href="https://publications.waset.org/abstracts/search?q=electrosurgery" title=" electrosurgery"> electrosurgery</a>, <a href="https://publications.waset.org/abstracts/search?q=piezosurgery" title=" piezosurgery"> piezosurgery</a> </p> <a href="https://publications.waset.org/abstracts/67009/explantation-of-osseo-integrated-implant-using-electrosurgery-and-ultrasonic-instrumentation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67009.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">8502</span> Ultrasonic Assisted Growth of ZnO Nanorods at Low Temperature </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khairul%20Anuar">Khairul Anuar</a>, <a href="https://publications.waset.org/abstracts/search?q=Wai%20Yee%20Lee"> Wai Yee Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20C.%20S.%20Bien"> Daniel C. S. Bien</a>, <a href="https://publications.waset.org/abstracts/search?q=Hing%20Wah%20Lee"> Hing Wah Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Ishak%20Azid"> Ishak Azid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper investigates the effect of ultrasonic treatment on ZnO nutrient solution prior to the growth of ZnO nanorods, where the seed layer is annealed at 50 and 100°C. The results show that the ZnO nanorods are successfully grown on the sample annealed at 50°C in the sonicated ZnO nutrient solution with a length and a diameter of approximately 8.025 µm and 92 nm, respectively. However, no ZnO nanorods structures are observed for the sample annealed at 50°C and grown in unsonicated ZnO nutrient solution. Meanwhile, the ZnO nanorods for the sample annealed at 100°C are successfully grown in both sonicated and unsonicated ZnO nutrient solutions. The length and diameter of the nanorods for the sample grown in the sonicated solution are 8.681 µm and 1.033 nm, whereas those for the sample grown in the unsonicated solution are 7.613 µm and 1.040 nm. This result shows that with ultrasonic treatment, the length of the ZnO nanorods increases by 14%, whereas their diameter is reduced by 0.7%, resulting in an increase of aspect ratio from 7:1 to 8:1. Electroconductivity and pH sensors are used to measure the conductivity and acidity level of the sonicated and unsonicated solutions, respectively. The result shows that the conductivity increases from 87 mS/cm to 10.4 mS/cm, whereas the solution pH decreases from 6.52 to 6.13 for the sonicated and unsonicated solutions, respectively. The increase in solution conductivity and acidity level elucidates the higher amount of zinc nutrient in the sonicated solution than in the unsonicated solution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20treatment" title="ultrasonic treatment">ultrasonic treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20annealing%20temperature" title=" low annealing temperature"> low annealing temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=ZnO%20nanostructure" title=" ZnO nanostructure"> ZnO nanostructure</a>, <a href="https://publications.waset.org/abstracts/search?q=nanorods" title=" nanorods"> nanorods</a> </p> <a href="https://publications.waset.org/abstracts/10106/ultrasonic-assisted-growth-of-zno-nanorods-at-low-temperature" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10106.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">369</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">8501</span> Non-Destructive Inspection for Tunnel Lining Concrete with Small Void by Using Ultrasonic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yasuyuki%20Nabeshima">Yasuyuki Nabeshima</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Many tunnels which have been constructed since more than 50 years were existing in Japan. Lining concrete in these tunnels have many problems such as crack, flacking and void. Inner void between lining concrete and rock was very hard to find by outside visual check and hammering test. In this paper, non-destructive inspection by using ultrasonic was applied to investigate inner void. A model concrete with inner void was used as specimen and ultrasonic inspection was applied to specify the location and the size of void. As a result, ultrasonic inspection could accurately find the inner void. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tunnel" title="tunnel">tunnel</a>, <a href="https://publications.waset.org/abstracts/search?q=lining%20concrete" title=" lining concrete"> lining concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=void" title=" void"> void</a>, <a href="https://publications.waset.org/abstracts/search?q=non-destructive%20inspection" title=" non-destructive inspection"> non-destructive inspection</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic" title=" ultrasonic"> ultrasonic</a> </p> <a href="https://publications.waset.org/abstracts/74615/non-destructive-inspection-for-tunnel-lining-concrete-with-small-void-by-using-ultrasonic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74615.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">213</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">8500</span> Design of a Pulse Generator Based on a Programmable System-on-Chip (PSoC) for Ultrasonic Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pedro%20Acevedo">Pedro Acevedo</a>, <a href="https://publications.waset.org/abstracts/search?q=Carlos%20D%C3%ADaz"> Carlos Díaz</a>, <a href="https://publications.waset.org/abstracts/search?q=M%C3%B3nica%20V%C3%A1zquez"> Mónica Vázquez</a>, <a href="https://publications.waset.org/abstracts/search?q=Joel%20Dur%C3%A1n"> Joel Durán</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper describes the design of a pulse generator based on the Programmable System-on-Chip (PSoC) module. In this module, using programmable logic is possible to implement different pulses which are required for ultrasonic applications, either in a single channel or multiple channels. This module can operate with programmable frequencies from 3-74 MHz; its programming may be versatile covering a wide range of ultrasonic applications. It is ideal for low-power ultrasonic applications where PZT or PVDF transducers are used. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PSoC" title="PSoC">PSoC</a>, <a href="https://publications.waset.org/abstracts/search?q=pulse%20generator" title=" pulse generator"> pulse generator</a>, <a href="https://publications.waset.org/abstracts/search?q=PVDF" title=" PVDF"> PVDF</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20transducer" title=" ultrasonic transducer"> ultrasonic transducer</a> </p> <a href="https://publications.waset.org/abstracts/41457/design-of-a-pulse-generator-based-on-a-programmable-system-on-chip-psoc-for-ultrasonic-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41457.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">293</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">8499</span> Calcium Silicate Bricks – Ultrasonic Pulse Method: Effects of Natural Frequency of Transducers on Measurement Results</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jiri%20Brozovsky">Jiri Brozovsky</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Modulus of elasticity is one of the important parameters of construction materials, which considerably influence their deformation properties and which can also be determined by means of non-destructive test methods like ultrasonic pulse method. However, measurement results of ultrasonic pulse methods are influenced by various factors, one of which is the natural frequency of the transducers. The paper states knowledge about influence of natural frequency of the transducers (54; 82 and 150kHz) on ultrasonic pulse velocity and dynamic modulus of elasticity (Young's Dynamic modulus of elasticity). Differences between ultrasonic pulse velocity and dynamic modulus of elasticity were found with the same smallest dimension of test specimen in the direction of sounding and density their value decreases as the natural frequency of transducers grew. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calcium%20silicate%20brick" title="calcium silicate brick">calcium silicate brick</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20pulse%20method" title=" ultrasonic pulse method"> ultrasonic pulse method</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20pulse%20velocity" title=" ultrasonic pulse velocity"> ultrasonic pulse velocity</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20modulus%20of%20elasticity" title=" dynamic modulus of elasticity"> dynamic modulus of elasticity</a> </p> <a href="https://publications.waset.org/abstracts/12508/calcium-silicate-bricks-ultrasonic-pulse-method-effects-of-natural-frequency-of-transducers-on-measurement-results" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12508.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">8498</span> Characterization of Ultrasonic Nonlinearity in Concrete under Cyclic Change of Prestressing Force</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gyu-Jin%20Kim">Gyu-Jin Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyo-Gyoung%20Kwak"> Hyo-Gyoung Kwak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this research, the effect of prestressing force on the nonlinearity of concrete was investigated by an experimental study. For the measurement of ultrasonic nonlinearity, a prestressed concrete beam was prepared and a nonlinear resonant ultrasound method was adopted. When the prestressing force changes, the stress state of the concrete inside the beam is affected, which leads to the occurrence of micro-cracks and changes in mechanical properties. Therefore, it is necessary to introduce nonlinear ultrasonic technology which sensitively reflects microstructural changes. Repetitive prestressing load history, including maximum levels of 45%, 60% and 75%, depending on the compressive strength, is designed to evaluate the impact of loading levels on the nonlinearity. With the experimental results, the possibility of ultrasonic nonlinearity as a trial indicator of stress was evaluated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=micro%20crack" title="micro crack">micro crack</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20ultrasonic%20resonant%20spectroscopy" title=" nonlinear ultrasonic resonant spectroscopy"> nonlinear ultrasonic resonant spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=prestressed%20concrete%20beam" title=" prestressed concrete beam"> prestressed concrete beam</a>, <a href="https://publications.waset.org/abstracts/search?q=prestressing%20force" title=" prestressing force"> prestressing force</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20nonlinearity" title=" ultrasonic nonlinearity"> ultrasonic nonlinearity</a> </p> <a href="https://publications.waset.org/abstracts/75772/characterization-of-ultrasonic-nonlinearity-in-concrete-under-cyclic-change-of-prestressing-force" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75772.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">240</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">8497</span> Effect of Vibration Amplitude and Welding Force on Weld Strength of Ultrasonic Metal Welding</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ziad.%20Sh.%20Al%20Sarraf">Ziad. Sh. Al Sarraf</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ultrasonic metal welding has been the subject of ongoing research and development, most recently concentrating on metal joining in miniature devices, for example to allow solder-free wire bonding. As well as at the small scale, there are also opportunities to research the joining of thicker sheet metals and to widen the range of similar and dissimilar materials that can be successfully joined using this technology. This study presents the design, characterisation and test of a lateral-drive ultrasonic metal spot welding device. The ultrasonic metal spot welding horn is modelled using finite element analysis (FEA) and its vibration behaviour is characterised experimentally to ensure ultrasonic energy is delivered effectively to the weld coupon. The welding stack and fixtures are then designed and mounted on a test machine to allow a series of experiments to be conducted for various welding and ultrasonic parameters. Weld strength is subsequently analysed using tensile-shear tests. The results show how the weld strength is particularly sensitive to the combination of clamping force and ultrasonic vibration amplitude of the welding tip, but there are optimal combinations of these and also limits that must be clearly identified. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20welding" title="ultrasonic welding">ultrasonic welding</a>, <a href="https://publications.waset.org/abstracts/search?q=vibration%20amplitude" title=" vibration amplitude"> vibration amplitude</a>, <a href="https://publications.waset.org/abstracts/search?q=welding%20force" title=" welding force"> welding force</a>, <a href="https://publications.waset.org/abstracts/search?q=weld%20strength" title=" weld strength"> weld strength</a> </p> <a href="https://publications.waset.org/abstracts/41161/effect-of-vibration-amplitude-and-welding-force-on-weld-strength-of-ultrasonic-metal-welding" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41161.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">368</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">8496</span> Treatment of Acid Mine Lake by Ultrasonically Modified Fly Ash at Different Frequencies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Burcu%20Ileri">Burcu Ileri</a>, <a href="https://publications.waset.org/abstracts/search?q=Deniz%20%20Sanliyuksel%20Yucel"> Deniz Sanliyuksel Yucel</a>, <a href="https://publications.waset.org/abstracts/search?q=Onder%20Ayyildiz"> Onder Ayyildiz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The oxidation of pyrite in water results in the formation of acid mine drainage, which typically forms extremely acid mine lake (AML) in the depression areas of abandoned Etili open-pit coal mine site, Northwest Turkey. Nine acid mine lakes of various sizes have been located in the Etili coal mine site. Hayirtepe AML is one of the oldest lake having a mean pH value of 2.9 and conductivity of 4550 μS/cm, and containing elevated concentrations of Al, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn. The water quality of the lake has been deteriorated due to its high chemical composition, in particular, increasing heavy metal pollution. In this study, fly ash (FA), a coal combustion by-product from fluidized bed thermal power plant in the northwestern part of Turkey, was used as an adsorbent for the treatment of Hayirtepe AML. The FA is a relatively abundant and cost effective material, but its use in adsorption processes usually require excessive adsorbent doses. To increase adsorption efficiency and lower the adsorbent dose, we modified the FA by means of ultrasonic treatment (20 kHz and 40 kHz). The images of scanning electron microscopy (SEM) have demonstrated that ultrasonic treatment not only decreased the size of ash particles but also created pits and cracks on their surfaces which in turn led to a significant increase in the BET surface area. Both FA and modified fly ash were later tested for the removal of heavy metals from the AML. The effect of various operating parameters such as ultrasonic power, pH, ash dose, and adsorption contact time were examined to obtain the optimum conditions for the treatment process. The results have demonstrated that removal of heavy metals by ultrasound-modified fly ash requires much shorter treatment times and lower adsorbent doses than those attained by the unmodified fly ash. This research was financially supported by the Scientific and Technological Research Council of Turkey (TUBITAK), (Project no: 116Y510). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acid%20mine%20lake" title="acid mine lake">acid mine lake</a>, <a href="https://publications.waset.org/abstracts/search?q=heavy%20metal" title=" heavy metal"> heavy metal</a>, <a href="https://publications.waset.org/abstracts/search?q=modified%20fly%20ash" title=" modified fly ash"> modified fly ash</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20treatment" title=" ultrasonic treatment"> ultrasonic treatment</a> </p> <a href="https://publications.waset.org/abstracts/85155/treatment-of-acid-mine-lake-by-ultrasonically-modified-fly-ash-at-different-frequencies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85155.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">198</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">8495</span> Effect of Ultrasonic Vibration on the Dilution, Mechanical, and Metallurgical Properties in Cladding of 308 on Mild Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sandeep%20Singh%20Sandhu">Sandeep Singh Sandhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Karanvir%20Singh%20Ghuman"> Karanvir Singh Ghuman</a>, <a href="https://publications.waset.org/abstracts/search?q=Parminder%20Singh%20Saini">Parminder Singh Saini</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the present investigation was to study the effect of ultrasonic vibration on the cladding of the AISI 308 on the mild steel plates using the shielded metal arc welding (SMAW). Ultrasonic vibrations were applied to molten austenitic stainless steel during the welding process. Due to acoustically induced cavitations and streaming there is a complete mixture of the clad metal and the base metal. It was revealed that cladding of AISI 308 over mild steel along with ultrasonic vibrations result in uniform and finer grain structures. The effect of the vibration on the dilution, mechanical properties and metallographic studies were also studied. It was found that the welding done using the ultrasonic vibration has the less dilution and CVN value for the vibrated sample was also high. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=surfacing" title="surfacing">surfacing</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20vibrations" title=" ultrasonic vibrations"> ultrasonic vibrations</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=shielded%20metal%20arc%20welding" title=" shielded metal arc welding"> shielded metal arc welding</a> </p> <a href="https://publications.waset.org/abstracts/33132/effect-of-ultrasonic-vibration-on-the-dilution-mechanical-and-metallurgical-properties-in-cladding-of-308-on-mild-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33132.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">494</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">8494</span> Effect of Convective Dryness Combined with Osmotic Dehydration, Blanching, Microwave and Ultrasonic Treatment on Bioactive Compounds and Rehydration Capacity of Dried Plums</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elena%20Corina%20Popescu">Elena Corina Popescu</a>, <a href="https://publications.waset.org/abstracts/search?q=Magda%20Gabriela%20Bratu"> Magda Gabriela Bratu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Increasing interest in keeping bioactive compounds (anthocyanins, vitamin C) and dried fruit quality has motivated the researchers to investigate new combined drying technologies. The aim of this study was to evaluate the effects of convective dryness combined with osmotic dehydration, blanching, microwave treatment and ultrasonic treatment on the quality of dried plums. Osmotic dehydration was achieved by maintaining plums for 1 h in sucrose solution (300Brix). For microwave treatment, the plums were kept at 400 W for 80 sec. For ultrasonic treatment, plums were immersed in distilled water and sonicated for 30 minutes at 40 kHz and 200 W. The blanching consists of immersing plums in hot water at 90°C for 20 seconds and cooling them rapidly. Conventional drying was carried out at 70°C for 630 minutes. Drying curves, drying rate, anthocyanin and vitamin C stability, acidity variation (expressed as malic acid), reducing sugar content, and rehydration capacity of dried plums were analyzed. Blanching led to the largest amount of evaporated water. Blanched plums have had 13.36% less water than sonicated ones. The lowest anthocyanal loss of 34.5% was obtained in osmotically dehydrated plums, and 2.93% vitamin C is found in the plums sonicated. There were no significant differences in regards acidity and reducing sugar. The plums blanched before drying have had a high capacity of rehydration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anthocyanin" title="anthocyanin">anthocyanin</a>, <a href="https://publications.waset.org/abstracts/search?q=dried%20plums" title=" dried plums"> dried plums</a>, <a href="https://publications.waset.org/abstracts/search?q=pretreatments" title=" pretreatments"> pretreatments</a>, <a href="https://publications.waset.org/abstracts/search?q=vitamin%20C" title=" vitamin C"> vitamin C</a> </p> <a href="https://publications.waset.org/abstracts/83359/effect-of-convective-dryness-combined-with-osmotic-dehydration-blanching-microwave-and-ultrasonic-treatment-on-bioactive-compounds-and-rehydration-capacity-of-dried-plums" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/83359.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">235</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">8493</span> Surface Nanocrystalline and Hardening Effects of Ti–Al–V Alloy by Electropulsing Ultrasonic Shock</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xiaoxin%20Ye">Xiaoxin Ye</a>, <a href="https://publications.waset.org/abstracts/search?q=Guoyi%20Tang"> Guoyi Tang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of electropulsing ultrasonic shock (EUS) on the surface hardening and microstructure of Ti6Al4V alloy was studied. It was found that electropulsing improved the microhardness dramatically both in the influential depth and maximum value, compared with the only ultrasonic-shocked sample. It’s indicated that refined surface layer with nanocrystalline and improved microhardness were obtained on account of surface severe plastic deformation, dynamic recrystallization (DRX) and phase change, which was implemented at relative low temperature and high strain rate/capacity due to the coupling of the thermal and athermal effects of EUS. It’s different from conventional experiments and theory. It’s discussed that the positive contributions of EPT in the thermodynamics and kinetics of microstructure and properties change were attributed to the reduction of nucleation energy barrier and acceleration of atomic diffusion. Therefore, it’s supposed that EUS is an energy-saving and high-efficiency method of surface treatment technique with the help of high-energy electropulses, which is promising in cost reduction of the surface engineering and energy management. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=titanium%20alloys" title="titanium alloys">titanium alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=electropulsing" title=" electropulsing"> electropulsing</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20shock" title=" ultrasonic shock"> ultrasonic shock</a>, <a href="https://publications.waset.org/abstracts/search?q=microhardness" title=" microhardness"> microhardness</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocrystalline" title=" nanocrystalline"> nanocrystalline</a> </p> <a href="https://publications.waset.org/abstracts/15784/surface-nanocrystalline-and-hardening-effects-of-ti-al-v-alloy-by-electropulsing-ultrasonic-shock" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15784.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">291</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">8492</span> Evaluation of Stress Relief using Ultrasonic Peening in GTAW Welding and Stress Corrosion Cracking (SCC) in Stainless Steel, and Comparison with the Thermal Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamidreza%20Mansouri">Hamidreza Mansouri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the construction industry, the lifespan of a metal structure is directly related to the quality of welding. In most metal structures, the welded area is considered critical and is one of the most important factors in design. To date, many fracture incidents caused by these types of cracks have occurred. Various methods exist to increase the lifespan of welds to prevent failure in the welded area. Among these methods, the application of ultrasonic peening, in addition to the stress relief process, can manually and more precisely adjust the geometry of the weld toe and prevent stress concentration in this part. This research examined Gas Tungsten Arc Welding (GTAW) on common structural steels and 316 stainless steel, which require precise welding, to predict the optimal condition. The GTAW method was used to create residual stress; two samples underwent ultrasonic stress relief, and for comparison, two samples underwent thermal stress relief. Also, no treatment was considered for two samples. The residual stress of all six pieces was measured by X-Ray Diffraction (XRD) method. Then, the two ultrasonically stress-relieved samples and two untreated samples were exposed to a corrosive environment to initiate cracking and determine the effectiveness of the ultrasonic stress relief method. Thus, the residual stress caused by GTAW in the samples decreased by 3.42% with thermal treatment and by 7.69% with ultrasonic peening. Furthermore, the results show that the untreated sample developed cracks after 740 hours, while the ultrasonically stress-relieved piece showed no cracks. Given the high costs of welding and post-welding zone modification processes, finding an economical, effective, and comprehensive method that has the least limitations alongside a broad spectrum of usage is of great importance. Therefore, the impact of various ultrasonic peening stress relief parameters and the selection of the best stress relief parameter to achieve the longest lifespan for the weld area is highly significant. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GTAW%20welding" title="GTAW welding">GTAW welding</a>, <a href="https://publications.waset.org/abstracts/search?q=stress%20corrosion%20cracking%28SCC%29" title=" stress corrosion cracking(SCC)"> stress corrosion cracking(SCC)</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20method" title=" thermal method"> thermal method</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20peening." title=" ultrasonic peening."> ultrasonic peening.</a> </p> <a href="https://publications.waset.org/abstracts/185199/evaluation-of-stress-relief-using-ultrasonic-peening-in-gtaw-welding-and-stress-corrosion-cracking-scc-in-stainless-steel-and-comparison-with-the-thermal-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185199.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">50</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">8491</span> Compressive Strength Evaluation of Underwater Concrete Structures Integrating the Combination of Rebound Hardness and Ultrasonic Pulse Velocity Methods with Artificial Neural Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seunghee%20Park">Seunghee Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Junkyeong%20Kim"> Junkyeong Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Eun-Seok%20Shin"> Eun-Seok Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=Sang-Hun%20Han"> Sang-Hun Han</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, two kinds of nondestructive evaluation (NDE) techniques (rebound hardness and ultrasonic pulse velocity methods) are investigated for the effective maintenance of underwater concrete structures. A new methodology to estimate the underwater concrete strengths more effectively, named “artificial neural network (ANN) – based concrete strength estimation with the combination of rebound hardness and ultrasonic pulse velocity methods” is proposed and verified throughout a series of experimental works. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=underwater%20concrete" title="underwater concrete">underwater concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=rebound%20hardness" title=" rebound hardness"> rebound hardness</a>, <a href="https://publications.waset.org/abstracts/search?q=Schmidt%20hammer" title=" Schmidt hammer"> Schmidt hammer</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20pulse%20velocity" title=" ultrasonic pulse velocity"> ultrasonic pulse velocity</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20sensor" title=" ultrasonic sensor"> ultrasonic sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=artificial%20neural%20networks" title=" artificial neural networks"> artificial neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=ANN" title=" ANN"> ANN</a> </p> <a href="https://publications.waset.org/abstracts/2714/compressive-strength-evaluation-of-underwater-concrete-structures-integrating-the-combination-of-rebound-hardness-and-ultrasonic-pulse-velocity-methods-with-artificial-neural-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2714.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">532</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">8490</span> Evaluation of Ultrasonic Techniques for the Estimation of Air Voids in Asphalt Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Majid%20Zargar">Majid Zargar</a>, <a href="https://publications.waset.org/abstracts/search?q=Frank%20Bullen"> Frank Bullen</a>, <a href="https://publications.waset.org/abstracts/search?q=Ron%20Ayers"> Ron Ayers</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One of the important factors in the design of asphalt concrete mixes is the accurate measurement of air voids and their variable distribution. Both can have significant impact on long and short term fatigue and creep behaviour under traffic. While some simple methods exist for overall evaluation of air voids, measuring air void distribution in asphalt concrete is very complex, involving expensive techniques such as X-ray methodologies. The research reported in the paper investigated the use of non-destructive ultrasonic techniques as an alternative to estimate the amount of air voids and their distribution within asphalt samples. Seventy-four Standard AC–14 asphalt samples made with three types of bitumen; Multigrade, PMB and C320 were analysed using ultrasonic techniques. The results have illustrated that ultrasonic testing has the potential of being a rapid, accurate and cost-effective method of estimating air void distribution in asphalt. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asphalt%20concrete" title="asphalt concrete">asphalt concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=air%20voids" title=" air voids"> air voids</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic" title=" ultrasonic"> ultrasonic</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20behaviour" title=" mechanical behaviour"> mechanical behaviour</a> </p> <a href="https://publications.waset.org/abstracts/59847/evaluation-of-ultrasonic-techniques-for-the-estimation-of-air-voids-in-asphalt-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59847.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">346</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">8489</span> Sonocatalytic Treatment of Baker’s Yeast Wastewater by Using SnO2/TiO2 Composite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Didem%20Ild%C4%B1rar">Didem Ildırar</a>, <a href="https://publications.waset.org/abstracts/search?q=Serap%20F%C4%B1nd%C4%B1k"> Serap Fındık</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Baker’s yeast industry uses molasses as a raw material. Molasses wastewater contains high molecular weight polymers called melanoidins. Melanoidins are obtained after the reactions between the amino acids and carbonyl groups in molasses. The molasses wastewater has high biochemical and chemical oxygen demand and dark brown color. If it is discharged to receiving bodies without any treatment, it prevents light penetration and dissolved oxygen level of the surface water decreases. Melanoidin compounds are toxic effect to the microorganism in water and there is a resistance to microbial degradation. Before discharging molasses wastewater, adequate treatment is necessary. In addition to changing environmental regulations, properties of treated wastewater must be improved. Advanced oxidation processes can be used to improve existing properties of wastewater. Sonochemical oxidation is one of the alternative methods. Sonochemical oxidation employs the use of ultrasound resulting in cavitation phenomena. In this study, decolorization and chemical oxygen demand removal (COD) of baker’s yeast effluent was investigated by using ultrasound. Baker’s yeast effluent was supplied from a factory which is located in the north of Turkey. An ultrasonic homogenizator was used for this study. Its operating frequency is 20kHz. SnO2/TiO2 catalyst has been used as sonocatalyst. The effects of the composite preparation method, mixing time while composite prepared, the molar ratio of SnO2/TiO2, the calcination temperature, and time, the catalyst amount were investigated on the treatment of baker’s yeast effluent. . According to the results, the prepared composite SnO2/TiO2 by using ultrasonic probe gave a better result than prepared composite by using an ultrasonic bath. Prepared composite by using an ultrasonic probe with a 4:1 molar ratio treated at 800°C for 60min gave a better result. By using this composite, optimum catalyst amount was 0.2g/l. At these conditions 26.6% decolorization was obtained. There was no COD removal at the studied conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=baker%E2%80%99s%20yeast%20effluent" title="baker’s yeast effluent">baker’s yeast effluent</a>, <a href="https://publications.waset.org/abstracts/search?q=COD" title=" COD"> COD</a>, <a href="https://publications.waset.org/abstracts/search?q=decolorization" title=" decolorization"> decolorization</a>, <a href="https://publications.waset.org/abstracts/search?q=sonocatalyst" title=" sonocatalyst"> sonocatalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20irradiation" title=" ultrasonic irradiation"> ultrasonic irradiation</a> </p> <a href="https://publications.waset.org/abstracts/41648/sonocatalytic-treatment-of-bakers-yeast-wastewater-by-using-sno2tio2-composite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41648.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">322</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">8488</span> Vibration Analysis and Optimization Design of Ultrasonic Horn</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kuen%20Ming%20Shu">Kuen Ming Shu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ren%20Kai%20Ho"> Ren Kai Ho</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ultrasonic horn has the functions of amplifying amplitude and reducing resonant impedance in ultrasonic system. Its primary function is to amplify deformation or velocity during vibration and focus ultrasonic energy on the small area. It is a crucial component in design of ultrasonic vibration system. There are five common design methods for ultrasonic horns: analytical method, equivalent circuit method, equal mechanical impedance, transfer matrix method, finite element method. In addition, the general optimization design process is to change the geometric parameters to improve a single performance. Therefore, in the general optimization design process, we couldn't find the relation of parameter and objective. However, a good optimization design must be able to establish the relationship between input parameters and output parameters so that the designer can choose between parameters according to different performance objectives and obtain the results of the optimization design. In this study, an ultrasonic horn provided by Maxwide Ultrasonic co., Ltd. was used as the contrast of optimized ultrasonic horn. The ANSYS finite element analysis (FEA) software was used to simulate the distribution of the horn amplitudes and the natural frequency value. The results showed that the frequency for the simulation values and actual measurement values were similar, verifying the accuracy of the simulation values. The ANSYS DesignXplorer was used to perform Response Surface optimization, which could shows the relation of parameter and objective. Therefore, this method can be used to substitute the traditional experience method or the trial-and-error method for design to reduce material costs and design cycles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=horn" title="horn">horn</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20frequency" title=" natural frequency"> natural frequency</a>, <a href="https://publications.waset.org/abstracts/search?q=response%20surface%20optimization" title=" response surface optimization"> response surface optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20vibration" title=" ultrasonic vibration"> ultrasonic vibration</a> </p> <a href="https://publications.waset.org/abstracts/151835/vibration-analysis-and-optimization-design-of-ultrasonic-horn" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/151835.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">116</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">8487</span> Non-Destructing Testing of Sandstones from Unconventional Reservoir in Poland with Use of Ultrasonic Pulse Velocity Technique and X-Ray Computed Microtomography</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Micha%C5%82%20Maksimczuk">Michał Maksimczuk</a>, <a href="https://publications.waset.org/abstracts/search?q=%C5%81ukasz%20Kaczmarek"> Łukasz Kaczmarek</a>, <a href="https://publications.waset.org/abstracts/search?q=Tomasz%20Wejrzanowski"> Tomasz Wejrzanowski</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study concerns high-resolution X-ray computed microtomography (µCT) and ultrasonic pulse analysis of Cambrian sandstones from a borehole located in the Baltic Sea Coast of northern Poland. µCT and ultrasonic technique are non-destructive methods commonly used to determine the internal structure of reservoir rock sample. The spatial resolution of the µCT images obtained was 27 µm, which enabled the author to create accurate 3-D visualizations of structure geometry and to calculate the ratio of pores volume to the total sample volume. A copper X-ray source filter was used to reduce image artifacts. Furthermore, samples Young’s modulus and Poisson ratio were obtained with use of ultrasonic pulse technique. µCT and ultrasonic pulse technique provide complex information which can be used for explorations and characterization of reservoir rocks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=elastic%20parameters" title="elastic parameters">elastic parameters</a>, <a href="https://publications.waset.org/abstracts/search?q=linear%20absorption%20coefficient" title=" linear absorption coefficient"> linear absorption coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=northern%20Poland" title=" northern Poland"> northern Poland</a>, <a href="https://publications.waset.org/abstracts/search?q=tight%20gas" title=" tight gas"> tight gas</a> </p> <a href="https://publications.waset.org/abstracts/65737/non-destructing-testing-of-sandstones-from-unconventional-reservoir-in-poland-with-use-of-ultrasonic-pulse-velocity-technique-and-x-ray-computed-microtomography" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65737.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">251</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">8486</span> An Ultrasonic Signal Processing System for Tomographic Imaging of Reinforced Concrete Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Edwin%20Forero-Garcia">Edwin Forero-Garcia</a>, <a href="https://publications.waset.org/abstracts/search?q=Jaime%20Vitola"> Jaime Vitola</a>, <a href="https://publications.waset.org/abstracts/search?q=Brayan%20Cardenas"> Brayan Cardenas</a>, <a href="https://publications.waset.org/abstracts/search?q=Johan%20Casagua"> Johan Casagua</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research article presents the integration of electronic and computer systems, which developed an ultrasonic signal processing system that performs the capture, adaptation, and analog-digital conversion to later carry out its processing and visualization. The capture and adaptation of the signal were carried out from the design and implementation of an analog electronic system distributed in stages: 1. Coupling of impedances; 2. Analog filter; 3. Signal amplifier. After the signal conditioning was carried out, the ultrasonic information was digitized using a digital microcontroller to carry out its respective processing. The digital processing of the signals was carried out in MATLAB software for the elaboration of A-Scan, B and D-Scan types of ultrasonic images. Then, advanced processing was performed using the SAFT technique to improve the resolution of the Scan-B-type images. Thus, the information from the ultrasonic images was displayed in a user interface developed in .Net with Visual Studio. For the validation of the system, ultrasonic signals were acquired, and in this way, the non-invasive inspection of the structures was carried out and thus able to identify the existing pathologies in them. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acquisition" title="acquisition">acquisition</a>, <a href="https://publications.waset.org/abstracts/search?q=signal%20processing" title=" signal processing"> signal processing</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasound" title=" ultrasound"> ultrasound</a>, <a href="https://publications.waset.org/abstracts/search?q=SAFT" title=" SAFT"> SAFT</a>, <a href="https://publications.waset.org/abstracts/search?q=HMI" title=" HMI"> HMI</a> </p> <a href="https://publications.waset.org/abstracts/162674/an-ultrasonic-signal-processing-system-for-tomographic-imaging-of-reinforced-concrete-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162674.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">107</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">8485</span> Effect of Inclusions in the Ultrasonic Fatigue Endurance of Maraging 300 Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20M.%20Dominguez%20Almaraz">G. M. Dominguez Almaraz</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20A.%20Ruiz%20Vilchez"> J. A. Ruiz Vilchez</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Sanchez%20Miranda"> M. A. Sanchez Miranda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ultrasonic fatigue tests have been carried out in the maraging 300 steel. Experimental results show that fatigue endurance under this modality of testing is closely related to the nature and geometrical properties of inclusions present in this alloy. A model was proposed to correlate the ultrasonic fatigue endurance with the nature and geometrical properties of the crack initiation inclusion. Scanning Electron Microscopy analyses were obtained on the fracture surfaces, in order to assess the crack initiation inclusion and to introduce these parameters in the proposed model, with good agreement for the fatigue life prediction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=inclusions" title="inclusions">inclusions</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20fatigue" title=" ultrasonic fatigue"> ultrasonic fatigue</a>, <a href="https://publications.waset.org/abstracts/search?q=maraging%20300%20steel" title=" maraging 300 steel"> maraging 300 steel</a>, <a href="https://publications.waset.org/abstracts/search?q=crack%20initiation" title=" crack initiation"> crack initiation</a> </p> <a href="https://publications.waset.org/abstracts/141323/effect-of-inclusions-in-the-ultrasonic-fatigue-endurance-of-maraging-300-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141323.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">214</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">8484</span> Ultrasonic Spectroscopy of Polymer Based PVDF-TrFE Composites with CNT Fillers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20Belovickis">J. Belovickis</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Samulionis"> V. Samulionis</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Banys"> J. Banys</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20V.%20Silibin"> M. V. Silibin</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20V.%20Solnyshkin"> A. V. Solnyshkin</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20V.%20Sysa"> A. V. Sysa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ferroelectric polymers exhibit good flexibility, processability and low cost of production. Doping of ferroelectric polymers with nanofillers may modify its dielectric, elastic or piezoelectric properties. Carbon nanotubes are one of the ingredients that can improve the mechanical properties of polymer based composites. In this work, we report on both the ultrasonic and the dielectric properties of the copolymer polyvinylidene fluoride/tetrafluoroethylene (P(VDF-TrFE)) of the composition 70/30 mol% with various concentrations of carbon nanotubes (CNT). Experimental study of ultrasonic wave attenuation and velocity in these composites has been performed over wide temperature range (100 K – 410 K) using an ultrasonic automatic pulse-echo tecnique. The temperature dependences of ultrasonic velocity and attenuation showed anomalies attributed to the glass transition and paraelectric-ferroelectric phase transition. Our investigations showed mechanical losses to be dependent on the volume fraction of the CNTs within the composites. The existence of broad hysteresis of the ultrasonic wave attenuation and velocity within the nanocomposites is presented between cooling and heating cycles. By the means of dielectric spectroscopy, it is shown that the dielectric properties may be tuned by varying the volume fraction of the CNT fillers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20nanotubes" title="carbon nanotubes">carbon nanotubes</a>, <a href="https://publications.waset.org/abstracts/search?q=polymer%20composites" title=" polymer composites"> polymer composites</a>, <a href="https://publications.waset.org/abstracts/search?q=PVDF-TrFE" title=" PVDF-TrFE"> PVDF-TrFE</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20spectroscopy" title=" ultrasonic spectroscopy"> ultrasonic spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/40938/ultrasonic-spectroscopy-of-polymer-based-pvdf-trfe-composites-with-cnt-fillers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40938.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">340</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">8483</span> Ultrasonic Techniques to Characterize and Monitor Water-in-Oil Emulsion</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20A.%20Alshaafi">E. A. Alshaafi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Prakash"> A. Prakash</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Oil-water emulsions are commonly encountered in various industrial operations and at different stages of crude oil production and processing. Emulsions are often difficult to track and treat and can cause a number of costly problems which need to be avoided. The characteristics of the emulsion phase can vary with crude composition and types of impurities present in oil. The objectives of this study are the development of ultrasonic techniques to track and characterize emulsion phase generated during production and cleaning of crude oil. The position of emulsion layer is monitored with the help of ultrasonic probes suitably placed in the vessel. The sensitivity of the technique and its potential has been demonstrated based on extensive testing with different oil samples. The technique is also being developed to monitor emulsion phase characteristics such as stability, composition, and droplet size distribution. The ultrasonic parameters recorded are changes in acoustic velocity, signal attenuation and its frequency spectrum. Emulsion has been prepared with light mineral oil sample and the effects of various factors including mixing speed, temperature, surfactant, and solid particles concentrations have been investigated. The applied frequency for ultrasonic waves has been varied from 1 to 5 MHz to carry out a sensitivity analysis. Emulsion droplet structure is observed with optical microscopy and stability is examined by tracking the changes in ultrasonic parameters with time. A model based on ultrasonic attenuation spectroscopy is being developed and tested to track changes in droplet size distribution with time. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20techniques" title="ultrasonic techniques">ultrasonic techniques</a>, <a href="https://publications.waset.org/abstracts/search?q=emulsion" title=" emulsion"> emulsion</a>, <a href="https://publications.waset.org/abstracts/search?q=characterization" title=" characterization"> characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=droplet%20size" title=" droplet size"> droplet size</a> </p> <a href="https://publications.waset.org/abstracts/74038/ultrasonic-techniques-to-characterize-and-monitor-water-in-oil-emulsion" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74038.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">175</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=ultrasonic%20treatment&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=ultrasonic%20treatment&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=ultrasonic%20treatment&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=ultrasonic%20treatment&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=ultrasonic%20treatment&page=6">6</a></li> <li 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