Mathematical modeling on the propagation of guided elastic waves

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dc.contributor.authorTeidj, Sara
dc.contributor.statusnemhu_HU
dc.date.accessioned2021-04-06T11:11:46Z
dc.date.available2021-04-06T11:11:46Z
dc.date.issued2020-08-01
dc.description.abstractThe main cause of train derailment is related to transverse defects that arise in the railhead. These consist typically of opened or internal flaws that develop generally in a plane that is orthogonal to the rail direction. Most of the actual inspection techniques of rails relay on eddy currents, electromagnetic induction, and ultrasounds. Ultrasounds based testing is performed according to the excitation-echo procedure [1]. It is conducted conventionally by using a contact excitation probe that rolls on the railhead or by a contact-less system using a laser as excitation and air-coupled acoustic sensors for wave reception. The ratio of false predictions either positive or negative is yet too high due to the low accuracy of the actual devices. The inspection rate is also late; new numerical method has been developed in this context: The semi-analytical finite element method SAFE. This method has been applied in the case of anisotropic media [2], composite plates [3] and media in contact with fluids [4]. This method has been used successfully for several structures and especially in the case of beams of any cross-section such as rails that are the subject of this work and we were interested in wave propagation in waveguides of any arbitrary cross-section in the case of beams or rails.hu_HU
dc.identifier.doi10.1556/1848.2020.20017hu_HU
dc.identifier.issn2062-0810
dc.identifier.issue2hu_HU
dc.identifier.jtitleInternational Review of Applied Sciences and Engineering
dc.identifier.urihttp://hdl.handle.net/2437/305248
dc.identifier.urlhttps://akjournals.com/view/journals/1848/11/2/article-p135.xmlhu_HU
dc.identifier.volume11hu_HU
dc.language.isoenhu_HU
dc.publisherAkadémiai Kiadóhu_HU
dc.subjecttrain derailmenthu_HU
dc.subjecttransverse defectshu_HU
dc.subjectrailheadhu_HU
dc.subjectSAFE methodhu_HU
dc.titleMathematical modeling on the propagation of guided elastic waveshu_HU
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International Review of Applied Sciences and Engineering