Numerical determination of modal dispersion and AE signal characterization in waveguides through LBIE/BEM and time-frequency analysis

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dc.contributor.authorVavourakis, V.en
dc.contributor.authorProtopappas, V. I. C.en
dc.contributor.authorFotiadis, D.en
dc.contributor.authorPolyzos, D.en
dc.date.accessioned2015-11-24T17:36:42Z
dc.date.available2015-11-24T17:36:42Z
dc.identifier.issn0178-7675-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/14273
dc.rightsDefault Licence-
dc.subjectwaveguidesen
dc.subjectdispersion curvesen
dc.subjectlbieen
dc.subjectbemen
dc.subjectacoustic emissionen
dc.subjecttime-frequency analysisen
dc.subjectboundary-element analysisen
dc.subjectarbitrary cross-sectionen
dc.subjectintegral-equation lbieen
dc.subjectlinear elasticityen
dc.subjectacoustic-wavesen
dc.subjectlamb wavesen
dc.subjectpropagationen
dc.subjectcomputationen
dc.subjectmotionen
dc.subjectbemen
dc.titleNumerical determination of modal dispersion and AE signal characterization in waveguides through LBIE/BEM and time-frequency analysisen
heal.abstractIn the present paper a meshless local boundary integral equation (LBIE) method is employed for the numerical determination of dispersion curves in plate like waveguides. Next, the LBIE method is properly combined with the boundary element method (BEM) for the characterization of acoustic emission signals derived from nucleating surface-breaking and body cracks in plate-like waveguides being in contact with a fluid. The time history of the propagating guided waves is computed by means of either the LBIE method or the hybrid LBIE/BEM scheme and the representation of mode dispersion is accomplished through the Reassigned Smoothed Pseudo Wigner-Ville time-frequency analysis. The effectiveness of the method is demonstrated through representative numerical examples.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDOI 10.1007/s00466-008-0318-7-
heal.identifier.secondary<Go to ISI>://000260836500009-
heal.journalNameComputational Mechanicsen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2009-
heal.publisherSpringeren
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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