Reference-free fatigue crack detection using nonlinear ultrasonic modulation under various temperature and loading conditions

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dc.contributor.authorLim, Hyung Jinko
dc.contributor.authorSohn, Hoonko
dc.contributor.authorDeSimio, Martin P.ko
dc.contributor.authorBrown, Kevinko
dc.date.accessioned2014-09-04T08:41:47Z-
dc.date.available2014-09-04T08:41:47Z-
dc.date.created2014-04-01-
dc.date.created2014-04-01-
dc.date.created2014-04-01-
dc.date.issued2014-04-
dc.identifier.citationMECHANICAL SYSTEMS AND SIGNAL PROCESSING, v.45, no.2, pp.468 - 478-
dc.identifier.issn0888-3270-
dc.identifier.urihttp://hdl.handle.net/10203/190155-
dc.description.abstractThis study presents a reference-free fatigue crack detection technique using nonlinear ultrasonic modulation. When low frequency (LF) and high frequency (HF) inputs generated by two surface-mounted lead zirconate titanate (PZT) transducers are applied to a structure, the presence of a fatigue crack can provide a mechanism for nonlinear ultrasonic modulation and create spectral sidebands around the frequency of the HF signal. The crack-induced spectral sidebands are isolated using a combination of linear response subtraction (LRS), synchronous demodulation (SD) and continuous wavelet transform (CWT) filtering. Then, a sequential outlier analysis is performed on the extracted sidebands to identify the crack presence without referring any baseline data obtained from the intact condition of the structure. Finally, the robustness of the proposed technique is demonstrated using actual test data obtained from simple aluminum plate and complex aircraft fitting-lug specimens under varying temperature and loading variations.-
dc.languageEnglish-
dc.publisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD-
dc.titleReference-free fatigue crack detection using nonlinear ultrasonic modulation under various temperature and loading conditions-
dc.typeArticle-
dc.identifier.wosid000331850400014-
dc.identifier.scopusid2-s2.0-84895060162-
dc.type.rimsART-
dc.citation.volume45-
dc.citation.issue2-
dc.citation.beginningpage468-
dc.citation.endingpage478-
dc.citation.publicationnameMECHANICAL SYSTEMS AND SIGNAL PROCESSING-
dc.identifier.doi10.1016/j.ymssp.2013.12.001-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorSohn, Hoon-
dc.contributor.nonIdAuthorDeSimio, Martin P.-
dc.contributor.nonIdAuthorBrown, Kevin-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorFatigue crack detection-
dc.subject.keywordAuthorNonlinear ultrasonic modulation-
dc.subject.keywordAuthorReference-free damage detection-
dc.subject.keywordAuthorTemperature and loading variations-
dc.subject.keywordAuthorPZT-
dc.subject.keywordPlusDELAMINATION DETECTION-
dc.subject.keywordPlusDAMAGE DETECTION-
dc.subject.keywordPlusCOMPOSITE PLATE-
dc.subject.keywordPlusSPECTROSCOPY-
dc.subject.keywordPlusVARIABILITY-
dc.subject.keywordPlusACOUSTICS-
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