Relevant bibliographies by topics / Electromagnetic-acoustic transducer

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Electromagnetic-acoustic transducer'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Electromagnetic-acoustic transducer"

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Suchkov, H. M., S. Yu Pliesnetsov, M. Ye Kalnitskyi, Yu Yu Koshkarov, and I. M. Oleksenko. "Electromagnetic-acoustic transducer with a combined magnetization." Paton Welding Journal 2025, no. 5 (2025): 51–54. https://doi.org/10.37434/tpwj2025.05.06.

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Mandracchia, Efrain A. "Electromagnetic acoustic transducer." Journal of the Acoustical Society of America 104, no. 6 (1998): 3152. http://dx.doi.org/10.1121/1.424225.

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Morimoto, Kazuo. "Electromagnetic acoustic transducer." Journal of the Acoustical Society of America 77, no. 4 (1985): 1634. http://dx.doi.org/10.1121/1.391949.

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Andoo, Kimihiro. "Electromagnetic electro-acoustic transducer." Journal of the Acoustical Society of America 115, no. 2 (2004): 448. http://dx.doi.org/10.1121/1.1669239.

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Herdovics, Balint, and Frederic Cegla. "Structural health monitoring using torsional guided wave electromagnetic acoustic transducers." Structural Health Monitoring 17, no. 1 (2016): 24–38. http://dx.doi.org/10.1177/1475921716682688.

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Torsional guided wave inspection is widely used for pipeline inspection. Piezoelectric and magnetostrictive transducers are most commonly used to generate torsional guided waves. These types of transducers require bonding or mechanical contact to the pipe which can result in changes over time which are undesirable for structural health monitoring. This article presents a non-contact Lorentz force–based electromagnetic acoustic transducer for torsional guided wave monitoring of pipelines. First, the excitation mechanism of the transducer is simulated by analyzing the eddy current and the static
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Guan, Yaojun, and Yang Gao. "Structural Design and Optimization of Low-Frequency High-Power Electromagnetic Transducer." International Journal of Acoustics and Vibration 29, no. 2 (2024): 116–24. http://dx.doi.org/10.20855/ijav.2024.29.22028.

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Crucial equipment for marine engineering and research, high-power ultra-low frequency sound sources have become necessary with the rapid development of seabed resource exploration, marine environment monitoring, underwater remote target detection, and communication technology. The current ultra-low frequency sound source cannot meet the requirements of practical applications. In this paper, both the finite element method and equivalent circuit method are used to improve the electromagnetic acoustic transducer, focusing on solving the structural design of the functional parts of the transducer,
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Carlson, Elmer V. "Magnetically shielded electromagnetic acoustic transducer." Journal of the Acoustical Society of America 91, no. 2 (1992): 1198. http://dx.doi.org/10.1121/1.402551.

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Flora, John. "Flexible electromagnetic acoustic transducer sensor." Journal of the Acoustical Society of America 122, no. 1 (2007): 17. http://dx.doi.org/10.1121/1.2756394.

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Pozniakova, Marharyta, Grigory Suchkov, Ruslan Mygushchenko, Olga Kropachek, and Andriy Donchenko. "Improvement of the measuring ultrasonic electromagnetic-acoustic transducer." Ukrainian Metrological Journal, no. 1 (June 21, 2023): 27–33. http://dx.doi.org/10.24027/2306-7039.1.2023.282540.

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Based on the analysis of previously published research and studies, it has been established that despite their significant advantages over traditional “contact” sensors in measurements, testing and diagnostics of thin dielectric coated (via paint, plastic, etc.) metal products, the available electromagnetic-acoustic transducers provide insufficient sensitivity and significant uncontrolled (“dead”) zone. This situation complicates testing of thin sheets, pipes, shells, tanks etc., and sometimes makes it impossible to measure the remaining thickness of the metal.
 The analysis of available
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Herdovics, Balint, and Frederic Cegla. "Long-term stability of guided wave electromagnetic acoustic transducer systems." Structural Health Monitoring 19, no. 1 (2018): 3–11. http://dx.doi.org/10.1177/1475921718805733.

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This article evaluates the long-term stability of a Lorentz force guided wave electromagnetic acoustic transducer. The specific application of the investigated electromagnetic acoustic transducer is pipeline health monitoring using low-frequency (27 kHz) long-range torsional guided waves. There is a concern that repeated swings in the temperature of the structure can cause irreversible changes in the transduction mechanism and therefore pose a risk to the long-term stability of transducers. In this article we report on guided wave signals acquired on a custom-built transducer while it was expo
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Dissertations / Theses on the topic "Electromagnetic-acoustic transducer"

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Kogia, Maria. "High temperature electromagnetic acoustic transducer for guided wave testing." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/14491.

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This research focuses on the theoretical analysis, development and experimental evaluation of a water cooled Electromagnetic Acoustic Transducer (EMAT) specifically designed for high-temperature Guided Wave Testing (GWT). Its novel design and detailed calculation of its optimum operating conditions resulted in its effectiveness at high temperatures for both short (500oC) and long-term inspection (250oC). All the steps followed for the theoretical and experimental investigation of the limitations of the existing technology and the development of a probe that can overcome these boundaries are pr
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Kiteley, Ian David. "A study of EMAT (electromagnetic acoustic transducer) operation on ferromagnetic metals." Thesis, University of Warwick, 1999. http://wrap.warwick.ac.uk/59020/.

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Ultrasound is widely used as a tool for non destructive testing, being completely non invasive and much safer than some other methods, X ray techniques for example. Its low relative cost is also attractive purely from a business standpoint. Its use, however, is restricted more to applications where the ultrasonic transducer and test piece can be brought into close contact, thus allowing the use of couplant gels. In situations where a fully non contacting method is required the cost and complexity of an ultrasonic system is considerably higher. These usually take the form of laser based systems
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Rouge, Clémence. "Modélisation du rayonnement ultrasonore par un traducteur EMAT dans une pièce ferromagnétique." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2013. http://tel.archives-ouvertes.fr/tel-00942873.

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Le but de la thèse est de modéliser la génération d'ondes élastiques ultrasonores émises par EMATs dans une pièce ferromagnétique, modélisation appliquée au domaine du contrôle non destructif (CND). Les traducteurs EMATs combinent deux physiques différentes : électromagnétisme et élastodynamique. L'enjeu est d'intégrer dans la plateforme de simulation CIVA, dédiée notamment aux CND par courant de Foucault et par ultrasons, les éléments de modélisation inhérents à la problématique multi-physique posée. Ces éléments sont multiples et concernent premièrement la modélisation des forces électromagn
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Подолян, О. О. "Формування магнітного поля в ЕМА перетворювачах". Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/39389.

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Серед існуючих безконтактних методів формування акустичної хвилі особливе місце займає електромагнітно-акустичний (ЕМА) метод. Найбільш перспективним є застосування магнітопроводів з постійними магнітами і регульованим повітряним проміжком шляхом обертання магніту, його вертикального переміщення і підйому магнітопроводу над поверхнею.
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Ribichini, Remo. "Modelling of electromagnetic acoustic transducers." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/9010.

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At present, the dominant technology for transducers in the field of Ultrasonic Non-Destructive Testing is piezoelectric. However, some industrially important applications, like the inspection of components operating at high temperature or while in motion, are difficult tasks for standard piezoelectric probes since mechanical contact is required. In these cases, contactless NDT techniques can be an attractive alternative. Among the available options, Electromagnetic Acoustic Transducers (EMATs) can generate and detect ultrasonic waves without the need for a physical contact between the probe an
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Thomas, Sadiq. "Comprehensive finite element modelling of electromagnetic acoustic transducers." Thesis, University of Leeds, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509874.

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Vasiljevic, Milos. "Guided Wave Inspection of Pipes Using Electromagnetic Acoustic Transducers." Thesis, The University of Arizona, 2007. http://hdl.handle.net/10150/193355.

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This research covers modeling of Electro Magnetic Acoustic Transducers (EMATs) and their application in excitation and detection of longitudinal guided Lamb wave modes for evaluation of flaws in cylindrical pipes. The combination of the configuration of transducers and the frequency of the input current is essential for successful excitation of desired guided wave modes and for proper interpretation of the results. In this study EMATs were successfully constructed and longitudinal modes L(0,1) and L(0,2) were excited in the pipe. From the recorded signals the level of simulated damage in pi
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Penamakuru, Siva Krishna Chaitanya. "Optimization of electromagnetic acoustic transducers for nondestructive evaluation of concrete structures." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/5706.

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Thesis (M.S.)--University of Missouri-Columbia, 2008.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on September 12, 2008) Includes bibliographical references.
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Carnell, Mark Thomas. "The application of optical diagnostics to high energy electromagnetic acoustic transducers." Thesis, Loughborough University, 1995. https://dspace.lboro.ac.uk/2134/11239.

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This thesis is concerned with the design and construction of an electromagnetic acoustic transducer (EMAT) and the characterisation of its acoustic field both conventionally, using a hydrophone and with high resolution laser illuminated schlieren techniques. During the early 80s the introduction of the EMA T along with the other types of shock wave source used for lithotripsy, revolutionised the treatment of stone disease. The process of shock wave induced destruction of calculi and the use of shock waves in other areas of medicine will be discussed, along with the causes and effects of stone
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Dixon, Steven Mark. "The analysis of aerospace adhesively bonded aluminium plates using electromagnetic acoustic transducers (EMATs)." Thesis, University of Warwick, 1994. http://wrap.warwick.ac.uk/36231/.

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This Thesis describes techniques used in the analysis of aerospace adhesively bonded sandwich joints using radially polarised shear wave EMATs, together with an analysis of the general performance of the EMAT systems used in the investigation. It is generally accepted that to date there is no satisfactory technique for the detection of defect types commonly encountered in adhesively bonded aerospace samples. This has limited the use of adhesives for joining components on critical parts, where no additional fixing techniques are used. Consequently, if a test procedure could be developed to accu
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Books on the topic "Electromagnetic-acoustic transducer"

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V, Clark A., Hehman C. S, and National Institute of Standards and Technology (U.S.), eds. Empirical modeling of electromagnetic acoustic transducer data. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1999.

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V, Clark A., Hehman C. S, and National Institute of Standards and Technology (U.S.), eds. Empirical modeling of electromagnetic acoustic transducer data. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1999.

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Kiteley, Ian David. A study of EMAT (electromagnetic acoustic transducer) operation on ferromagnetic metals. typescript, 1999.

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Hirao, Masahiko, and Hirotsugu Ogi. Electromagnetic Acoustic Transducers. Springer Japan, 2017. http://dx.doi.org/10.1007/978-4-431-56036-4.

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Empirical modeling of electromagnetic acoustic transducer data. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1999.

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Shapoorabadi, Reza Jafari. Electromagnetic acoustic transducer analysis by the finite element method. 2002.

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Hirao, Masahiko, and Hirotsugu Ogi. Electromagnetic Acoustic Transducers: Noncontacting Ultrasonic Measurements Using EMATs. Springer, 2016.

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Hirao, Masahiko, and Hirotsugu Ogi. Electromagnetic Acoustic Transducers: Noncontacting Ultrasonic Measurements using EMATs. Springer, 2018.

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Hirao, Masahiko, and Hirotsugu Ogi. Electromagnetic Acoustic Transducers: Noncontacting Ultrasonic Measurements using EMATs. Springer, 2016.

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Carnell, Mark Thomas. The application of optical diagnostics to high energy electromagnetic acoustic transducers. 1995.

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Book chapters on the topic "Electromagnetic-acoustic transducer"

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Huang, Songling, Shen Wang, Weibin Li, and Qing Wang. "Electromagnetic Acoustic Transducer." In Electromagnetic Ultrasonic Guided Waves. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0_1.

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Xu, Yang, Akihiro Tagawa, Masashi Ueda, et al. "A New Structure of SH Wave Electromagnetic Acoustic Transducer (EMAT)." In Acoustical Imaging. Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2402-3_23.

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Iureva, Radda A., Irina A. Tulkova, Alexey A. Margun, et al. "Stimulation of Horizontally Polarized Transverse Waves with the Help of Electromagnetic-Acoustic Transducer." In Intelligent Decision Technologies 2019. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8311-3_6.

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Boyd, Donald M., and Paul D. Sperline. "Noncontact Temperature Measurements of Hot Steel Bodies Using an Electromagnetic Acoustic Transducer (EMAT)." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-0979-6_96.

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Jie, Gao, Dong Baoyu, Lyu Yan, and He Cunfu. "Development of Acoustic Beam Deflection Electromagnetic Acoustic Transducer for Surface Crack Detection of Wind Turbine Main Shaft." In Advances in Production. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-45021-1_30.

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Ludwig, R., X. W. Dai, and R. Palanisamy. "A New Conservation Law Description of an Electromagnetic Acoustic Transducer in the Time Domain." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3344-3_134.

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Alers, G. A., and H. N. G. Wadley. "A Pulsed Laser/Electromagnetic Acoustic Transducer Approach to Ultrasonic Sensor Needs for Steel Processing." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1893-4_71.

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Hirao, Masahiko, and Hirotsugu Ogi. "Introduction." In Electromagnetic Acoustic Transducers. Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56036-4_1.

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Hirao, Masahiko, and Hirotsugu Ogi. "Nonlinear Acoustics for Microstructural Evolution." In Electromagnetic Acoustic Transducers. Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56036-4_10.

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Hirao, Masahiko, and Hirotsugu Ogi. "Online Texture Monitoring of Steel Sheets." In Electromagnetic Acoustic Transducers. Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56036-4_11.

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Conference papers on the topic "Electromagnetic-acoustic transducer"

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Rollet, Paul, Pierre Bélanger, Cong Zhu Sun, Alain Le Duff, and Guillaume Painchaud-April. "Thickness gauging using a high-temperature electromagnetic acoustic transducer with optimized magnetic field." In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2025, edited by Maria Pina Limongelli, Ching Tai Ng, and Didem Ozevin. SPIE, 2025. https://doi.org/10.1117/12.3051128.

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Beuker, Thomas, Claus Doescher, and Bryce Brown. "Acceptance of EMAT Based In-line Inspection Technology for the Assessment of Stress Corrosion Cracking and Other Forms of Cracking in Pipelines." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09108.

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Abstract Posing a major integrity threat, the phenomenon of Stress Corrosion Cracking (SCC) has been investigated and discussed intensively since the 1970's. On the basis of a deeper understanding of this threat today, integrity management programs have been developed further in the recent past. The detection of SCC with conventional liquid coupled ultrasonic technology is well accepted within the pipeline industry. Part of this acceptance is the successful application of such assessment standards as API 579. It has been shown that the conventional ultrasonic technology is sensitive and accura
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Romney, Matthew, and Sean Moran. "Validating EMAT Performance with an Operator." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16727.

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Abstract The primary focus of a pressurized piping systems integrity management program (IMP) is to provide safe, reliable operation. One of the preferred tools leveraged by operators is the use of in-line inspection (ILI) technologies to assess the integrity of their assets. A comprehensive inspection program using ILI systems to detect, quantify and accurately classify anomalies is a mitigation strategy for pipeline threats thus reducing risk to the environment. Magnetic flux leakage (MFL) is the most commonly used ILI technology for pipeline metal loss assessment. However, despite segments
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Akrasi, Itoro L., Mohammad S. Hamaqi, Tawfiq I. Hathloul, Abdullah F. Almakinzi, and Abdulaziz A. Naim. "Field Experience on Why Pipeline In-Line Inspections (ILI) Fail." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16884.

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Abstract Pipeline in-line inspection (ILI) is a reliable technique to evaluate and assess the integrity of pipelines. Multiple technologies are currently deployed for ILI. The most widely used include; Magnetic Flux leakage (MFL), Ultrasonic (UT), Electromagnetic Acoustic Transducer (EMAT) and Eddy Current (EC). ILI is used to identify different anomalies and defects, to prevent pipeline leaks or ruptures that will result in production loss and/or adverse environmental impact. Extensive planning is required before running an ILI tool in a pipeline. Even with extensive and rigorous planning bet
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Alhajri, Rashed, Meshary Albahli, Abdullah Alratoee, and Eid Alhazmi. "Development and Application of a Semi-quantitative Risk Assessment Approach for External SCC Integrity Assessment in Oil and Gas Pipelines." In CONFERENCE 2025. AMPP, 2025. https://doi.org/10.5006/c2025-00450.

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Abstract Since 1960s, numerous high and near neutral pH external Stress Corrosion Cracking (SCC) failures occurred in pipelines within Oil and Gas and other industries. To avoid such failures, multiple external SCC susceptibility criteria has evolved and been used including soil content, pH, coating type, Maximum Allowable Operating Pressure (MAOP), operating temperature and proximity to compression stations. While such criteria are present with successful empirical and field results, there has been limited methodology to readily and repetitively assess and risk rank pipelines susceptible to e
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Alhajri, Rashed, Meshary Albahli, Abdullah Alratoee, and Eid Alhazmi. "Development and Application of a Semi-quantitative Risk Assessment Approach for External SCC Integrity Assessment in Oil and Gas Pipelines." In CONFERENCE 2025. AMPP, 2025. https://doi.org/10.5006/c2025-00234.

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Abstract Since 1960s, numerous high and near neutral pH external Stress Corrosion Cracking (SCC) failures occurred in pipelines within Oil and Gas and other industries. To avoid such failures, multiple external SCC susceptibility criteria has evolved and been used including soil content, pH, coating type, Maximum Allowable Operating Pressure (MAOP), operating temperature and proximity to compression stations. While such criteria are present with successful empirical and field results, there has been limited methodology to readily and repetitively assess and risk rank pipelines susceptible to e
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Moran, Sean, and Robert Meyers. "Investigating EMAT Dig Results for a Low Frequency ERW Seam Inspection." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09184.

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Abstract Due to growing regulation and industry integrity management requirements, pipeline operators are redoubling their efforts to mitigate cracks. As a result, demand has increased for inline inspection (ILI) crack tool technology that can detect and size defects such as environmentally assisted cracking (EAC) and crack or crack-like anomalies in the long seam. Electromagnetic acoustic transducer (EMAT) technology has become an increasingly popular crack inspection tool for gas and liquid operators. EMAT overcomes limitations of alternatives such as hydrostatic testing, which can miss defe
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Baete, Christophe, Bart Van den Bossche, Chihab Abarkane, Sergio Peña, and Alejandra Albes. "A Novel Digital Twin Approach for Non-Intrusive Tank Bottom Corrosion Assessment." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-18773.

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Abstract Aboveground storage tanks require regular inspections of possible corrosion attacks on the tank bottom which typically calls for internal access leading to downtime and increased operational cost. A failure probability-based inspection approach utilizing non-intrusive technologies is the ultimate goal for operating above ground storage tanks in the most cost-beneficial way. This article describes a novel approach that combines ElectroMagnetic Acoustic Transducer (EMAT) technology with Finite Element Method (FEM) modeling for the detection and prediction of corrosion growth and the rem
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Onuoha, C., S. McDonnell, E. Pozniak, V. Shankar, and L. de Guzman. "Advancements in Stress Corrosion Cracking Direct Assessment Using an Integrated Approach." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11194.

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Abstract Stress Corrosion Cracking Direct Assessment (SCCDA), specified in NACE SP0204-2008, was developed to improve pipeline safety and reduce the threat of stress corrosion cracking (SCC) on onshore petroleum pipeline systems. The SCCDA program can be utilized as a primary technique for difficult to pig pipelines and as a supplement technique for inline inspection (ILI) for piggable pipelines. SCCDA is a continuous improvement process that identifies and addresses locations where SCC has occurred, is occurring, or might occur. SCCDA, ILI, and Hydrostatic Testing (HT) are primary inspection
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Matsumoto, Eiji, Shinji Kitamura, and Jun Abe. "Optimal design of electromagnetic acoustic transducer." In 2010 XIX International Conference on Electrical Machines (ICEM). IEEE, 2010. http://dx.doi.org/10.1109/icelmach.2010.5607846.

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Reports on the topic "Electromagnetic-acoustic transducer"

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Hehman, C. S. Empirical modeling of electromagnetic acoustic transducer data. National Institute of Standards and Technology, 1999. http://dx.doi.org/10.6028/nist.ir.5087.

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Zhao, George, Grang Mei, Bulent Ayhan, Chiman Kwan, and Venu Varma. DTRS57-04-C-10053 Wave Electromagnetic Acoustic Transducer for ILI of Pipelines. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0012049.

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In this project, Intelligent Automation, Incorporated (IAI) and Oak Ridge National Lab (ORNL) propose a novel and integrated approach to inspect the mechanical dents and metal loss in pipelines. It combines the state-of-the-art SH wave Electromagnetic Acoustic Transducer (EMAT) technique, through detailed numerical modeling, data collection instrumentation, and advanced signal processing and pattern classifications, to detect and characterize mechanical defects in the underground pipeline transportation infrastructures. The technique has four components: (1) thorough guided wave modal analysis
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Author, Unknown. DTRS56-02-T-0002 Pipeline Inspection Technologies Demonstration Report. Pipeline Research Council International, Inc. (PRCI), 2001. http://dx.doi.org/10.55274/r0011928.

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The purpose of this assessment is to help identify promising inspection technologies best suited for further development as part of an integrated teaming effort between the robotic platform and sensor developers. This document is not intended to provide a detailed analysis of each technology's performance or to rate their performance relative to one another. Technologies discussed include: Shear Horizontal Electromagnetic Acoustic Transducer (EMAT) Remote Field Eddy Current (RFEC) Collapsible Remote Field Eddy Current (CRFEC) Nondestructive Ultrasonic Measurement Permanent Magnet Eddy Current
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Boyd, D. M., G. E. Spanner, and P. D. Sperline. Direct measurement of solids: High temperature sensing Final report Experimental development and testing of high temperature pulsed EMATs (electromagnetic acoustic transducer):. Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/7145606.

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Bubenik, Tom, and Brian Riley. PR-186-183825-R01 Continuous Improvement of ILI Capabilities Joint Industry Project (Phase I). Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011620.

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The American Petroleum Institute (API) and Association of Oil Pipe Lines (AOPL)'s Research and Development Work Group (RDWG) and PRCI are undertaking a joint industry project to develop pull test strings and protocols to validate and test the performance specifications published for ultrasonic crack detection, electromagnetic acoustic transducer (EMAT), and spiral and circumferential magnetic flux leakage (MFL) in-line inspection (ILI) tools. The purpose of the joint industry project is to assess the current industry specifications and improve ILI crack tool capabilities. DNV GL served as the
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Nestleroth, Bruce, and Michael Rosenfeld. PR-218-173859-R01 ILI Crack Reliability Performance Evaluation and Integrity Management. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011543.

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This work compiled and statistically analyzed results from two types of ultrasonic in-line inspection (ILI) tools designed to detect axial cracks. Phase 1 of NDE-4E provided a robust series of statistical results related to liquid coupled ultrasonic crack detect (UTCD) ILI performance. In a follow-on project, additional data collection in Phase 2 provided a similar overview of electromagnetic acoustic transducer (EMAT) tool performance. This complementary work communicates how the tech-nical results from NDE-4E Phases 1 and 2 can be used by pipeline operators as part of an opera-tor's robust i
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Skow, Jason, and Smitha Koduru. PR-244-163728-R01 In-Line Inspection Crack Tool Performance Evaluation Phase II. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011531.

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After recent high profile pipeline incidents in the United States, the National Transportation Safety Board (NTSB) issued recommendations to review ILI technologies with respect to tool tolerance, probability of detection and probability of identi?cation, and to provide a model with detailed procedures for evaluating the e?ect of interacting corrosion and crack threats. Phase I of the PRCI project NDE-4E was initiated in 2013 to address the ?rst of these recommendations to the extent possible by mining existing historical operator data. The main goal of the project was to create a database of
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8

Unknown, Author. L51630 In-Line Detection and Sizing of Stress Corrosion Cracks Using EMAT Ultrasonics. Pipeline Research Council International, Inc. (PRCI), 1990. http://dx.doi.org/10.55274/r0010616.

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The development of stress corrosion cracks (SCC) in buried gas pipelineshas posed a serious threat to pipeline integrity for many years. It can be reliably detected by magnetic particle techniques in the field or by laboratory studies using low frequency eddy currents. It is also possible to find and measure the depths of the cracks from the ID by careful scanning with an ultra-sonic angle beam probe but the transducer must be manipulated by a skilled operator. All of these approaches are not very satisfactory for in-line inspections because they are not suitable for covering the total area of
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Haines(Archived), Harvey, Domenico Bellistri, and Jeff Vinyard. PR-366-173814-R01 Assessment of SCC with Advances in NDE including EMAT and IWEX Imaging. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011624.

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The goal of this project is to improve failure pressure estimates of stress corrosion cracking (SCC) colonies by advancing field measurements and comparison to in-line inspection (ILI) tool data. Electromagnetic acoustic transducer (EMAT) ILI technologies have made significant strides in providing crack depth measurements for SCC colonies, and emerging technologies such as ultrasonic testing (UT) imaging are providing more accurate in-ditch validation data. A project was proposed to improve failure pressure estimates, with 3 tasks spanning 3 years. This report covers the results of year 1 (tas
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Galili, Naftali, Roger P. Rohrbach, Itzhak Shmulevich, Yoram Fuchs, and Giora Zauberman. Non-Destructive Quality Sensing of High-Value Agricultural Commodities Through Response Analysis. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7570549.bard.

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The objectives of this project were to develop nondestructive methods for detection of internal properties and firmness of fruits and vegetables. One method was based on a soft piezoelectric film transducer developed in the Technion, for analysis of fruit response to low-energy excitation. The second method was a dot-matrix piezoelectric transducer of North Carolina State University, developed for contact-pressure analysis of fruit during impact. Two research teams, one in Israel and the other in North Carolina, coordinated their research effort according to the specific objectives of the proj
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