DC Field | Value | Language |
---|---|---|
dc.contributor.author | Dutta, Debaditya | ko |
dc.contributor.author | Sohn, Hoon | ko |
dc.contributor.author | Harries, Kent A. | ko |
dc.contributor.author | Rizzo, Piervincenzo | ko |
dc.date.accessioned | 2010-06-10T08:09:40Z | - |
dc.date.available | 2010-06-10T08:09:40Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2009-05 | - |
dc.identifier.citation | STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL, v.8, no.3, pp.251 - 262 | - |
dc.identifier.issn | 1475-9217 | - |
dc.identifier.uri | http://hdl.handle.net/10203/18829 | - |
dc.description.abstract | A crack detection technique based on nonlinear acoustics is investigated in this study. Acoustic waves at a chosen frequency are generated using an actuating lead zirconate titanate (PZT) transducer, and they travel through the target structure before being received by a sensing PZT wafer. Unlike an undamaged medium, a cracked medium exhibits high acoustic nonlinearity which is manifested as harmonics in the power spectrum of the received signal. Experimental results also indicate that the harmonic components increase nonlinearly in magnitude with increasing amplitude of the input signal. The proposed technique identifies the presence of cracks by looking at the two aforementioned features: harmonics and their nonlinear relationship to the input amplitude. The effectiveness of the technique has been tested on aluminum and steel specimens. The behavior of these nonlinear features as crack propagates in the steel beam has also been studied. | - |
dc.description.sponsorship | This research is supported by the Radiation Technology Program under Korea Science and Engineering Foundation (KOSEF) and the Ministry of Science and Technology (M20703000015-07N0300-01510) and Korea Research Foundation (D00462). | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | SAGE PUBLICATIONS LTD | - |
dc.title | A Nonlinear Acoustic Technique for Crack Detection in Metallic Structures | - |
dc.type | Article | - |
dc.identifier.wosid | 000265218900005 | - |
dc.identifier.scopusid | 2-s2.0-65349088047 | - |
dc.type.rims | ART | - |
dc.citation.volume | 8 | - |
dc.citation.issue | 3 | - |
dc.citation.beginningpage | 251 | - |
dc.citation.endingpage | 262 | - |
dc.citation.publicationname | STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL | - |
dc.identifier.doi | 10.1177/1475921709102105 | - |
dc.contributor.localauthor | Sohn, Hoon | - |
dc.contributor.nonIdAuthor | Dutta, Debaditya | - |
dc.contributor.nonIdAuthor | Harries, Kent A. | - |
dc.contributor.nonIdAuthor | Rizzo, Piervincenzo | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | nondestructive testing (NDT) | - |
dc.subject.keywordAuthor | active sensing | - |
dc.subject.keywordAuthor | nonlinear acoustics | - |
dc.subject.keywordAuthor | harmonics | - |
dc.subject.keywordAuthor | fatigue cracks | - |
dc.subject.keywordPlus | HARMONIC-GENERATION | - |
dc.subject.keywordPlus | BISPECTRAL ANALYSIS | - |
dc.subject.keywordPlus | FATIGUE CRACKS | - |
dc.subject.keywordPlus | SIMULATION | - |
dc.subject.keywordPlus | INTERFACE | - |
dc.subject.keywordPlus | SURFACES | - |
dc.subject.keywordPlus | CONTACT | - |
dc.subject.keywordPlus | DAMAGE | - |
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