Combination of a time reversal process and a consecutive outlier analysis for baseline-free damage diagnosis

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dc.contributor.authorSohn, Hoonko
dc.contributor.authorPark, HWko
dc.contributor.authorLaws, KHko
dc.contributor.authorFarrar, CRko
dc.date.accessioned2010-06-10T05:23:16Z-
dc.date.available2010-06-10T05:23:16Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2007-04-
dc.identifier.citationJOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, v.18, no.4, pp.335 - 346-
dc.identifier.issn1045-389X-
dc.identifier.urihttp://hdl.handle.net/10203/18812-
dc.description.abstractA structural health monitoring system is developed for continuous online monitoring of delamination initiation and growth in composite structures. Structural health monitoring problems are often cast in the context of a statistical pattern recognition paradigm, in which a damage state of a structure is inferred by comparing test data with baseline data. However, subtle signal changes due to damage can often be masked by larger ambient variation of operational and environmental conditions of an in-service structure. Therefore, it is critical for the development of a robust monitoring system to minimize false-positive indications of damage caused by the undesired operational and environmental variation of the structure. The issue of minimizing damage misclassification has been addressed in this article by developing an instantaneous damage detection scheme that does not rely on past baseline data. The proposed instantaneous damage diagnosis is based on the concepts of time reversal acoustics and consecutive outlier analysis, and the proposed damage diagnosis has been tested for detecting delamination in composite plates.-
dc.description.sponsorshipThe experiment was performed at Los Alamos National Laboratory and funded by the Department of Energy through the internal funding program at Los Alamos National Laboratory known as Laboratory Directed Research and Development (Damage Prognosis Solutions). The second author would like to acknowledge the Post-doctoral Fellowship Program (No. M01-2003-000-10124-0) of Korea Science & Engineering Foundation (KOSEF) in 2003.en
dc.languageEnglish-
dc.language.isoen_USen
dc.publisherSAGE PUBLICATIONS LTD-
dc.titleCombination of a time reversal process and a consecutive outlier analysis for baseline-free damage diagnosis-
dc.typeArticle-
dc.identifier.wosid000245177100004-
dc.identifier.scopusid2-s2.0-33947236390-
dc.type.rimsART-
dc.citation.volume18-
dc.citation.issue4-
dc.citation.beginningpage335-
dc.citation.endingpage346-
dc.citation.publicationnameJOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES-
dc.identifier.doi10.1177/1045389X06066291-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorSohn, Hoon-
dc.contributor.nonIdAuthorPark, HW-
dc.contributor.nonIdAuthorLaws, KH-
dc.contributor.nonIdAuthorFarrar, CR-
dc.type.journalArticleArticle-
dc.subject.keywordAuthordamage detection-
dc.subject.keywordAuthortime reversal acoustics-
dc.subject.keywordAuthorconsecutive outlier analysis-
dc.subject.keywordAuthordelamination-
dc.subject.keywordAuthorcomposites-
dc.subject.keywordAuthorgeneralized extreme value distribution-
dc.subject.keywordPlusFREQUENCY-DISTRIBUTION-
dc.subject.keywordPlusSTATISTICS-
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