Development of an optimal piezoelectric transducer to excite guided waves in a rail web

dc.contributor.authorRamatlo, Dineo Anna
dc.contributor.authorWilke, Daniel Nicolas
dc.contributor.authorLoveday, Philip W.
dc.contributor.emailnico.wilke@up.ac.zaen_ZA
dc.date.accessioned2018-03-12T12:46:20Z
dc.date.issued2018-04
dc.description.abstractUltrasonic transducers have demonstrated the ability to effectively excite guided waves that can propagate over long distances and are thus employed in monitoring systems. An ultrasonic piezoelectric transducer that strongly excites a mode travelling in the web of the rail is required to detect cracks in the rail web. A numerical method referred to as the Coupled Semi-Analytical Finite Element - 3 Dimensional Finite Element (Coupled SAFE-3DFE) method is employed to model the excitation of guided waves in a rail by a transducer. The aim of this study is to demonstrate that the Coupled SAFE-3DFE method used in conjunction with mathematical optimization methods, can automate the optimal design of a transducer. The optimal transducer was constructed and experimental measurements were found to agree with the predicted performance.en_ZA
dc.description.departmentMechanical and Aeronautical Engineeringen_ZA
dc.description.embargo2019-04-01
dc.description.librarianhj2018en_ZA
dc.description.urihttp://www.elsevier.com/locate/ndteinten_ZA
dc.identifier.citationRamatlo, D.A., Wilke, D.N. & Loveday, P.W. 2018, 'Development of an optimal piezoelectric transducer to excite guided waves in a rail web', NDT & E International, vol. 95, pp. 72-81.en_ZA
dc.identifier.issn0963-8695 (print)
dc.identifier.issn1879-1174 (online)
dc.identifier.other10.1016/j.ndteint.2018.02.002
dc.identifier.urihttp://hdl.handle.net/2263/64219
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2018 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in NDT and E International. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in NDT and E International, vol. 95, pp. 72-81, 2018. doi : 10.1016/j.ndteint.2018.02.002.en_ZA
dc.subjectCoupled semi-analytical finite element - 3 dimensional finite element (Coupled SAFE-3DFE)en_ZA
dc.subjectGuided wavesen_ZA
dc.subjectPiezoelectric transduceren_ZA
dc.subjectOptimizationen_ZA
dc.subjectResponse surfaceen_ZA
dc.subjectFinite element methoden_ZA
dc.subjectGuided electromagnetic wave propagationen_ZA
dc.subjectNumerical methodsen_ZA
dc.subjectPiezoelectricityen_ZA
dc.subjectTransducersen_ZA
dc.subjectUltrasonic applicationsen_ZA
dc.subjectUltrasonic transducersen_ZA
dc.subjectRail websen_ZA
dc.subjectPredicted performanceen_ZA
dc.subjectOptimal designen_ZA
dc.subjectMonitoring systemen_ZA
dc.subjectMathematical optimizationsen_ZA
dc.subject3-dimensionalen_ZA
dc.subject.otherEngineering, built environment and information technology articles SDG-09
dc.subject.otherSDG-09: Industry, innovation and infrastructure
dc.subject.otherEngineering, built environment and information technology articles SDG-11
dc.subject.otherSDG-11: Sustainable cities and communities
dc.subject.otherEngineering, built environment and information technology articles SDG-12
dc.subject.otherSDG-12: Responsible consumption and production
dc.titleDevelopment of an optimal piezoelectric transducer to excite guided waves in a rail weben_ZA
dc.typePostprint Articleen_ZA

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