DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Eun Jin | ko |
dc.contributor.author | Kim, Min Koo | ko |
dc.contributor.author | Sohn, Hoon | ko |
dc.contributor.author | Park, Hyun Woo | ko |
dc.date.accessioned | 2013-03-11T05:53:32Z | - |
dc.date.available | 2013-03-11T05:53:32Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2011-06 | - |
dc.identifier.citation | SMART MATERIALS STRUCTURES, v.20, no.6 | - |
dc.identifier.issn | 0964-1726 | - |
dc.identifier.uri | http://hdl.handle.net/10203/98434 | - |
dc.description.abstract | The electro-mechanical (EM) signals from piezoelectric (PZT) wafers are investigated for reference-free damage diagnosis so that a notch in a plate can be detected without requiring direct comparison with a baseline EM signal. Two identical PZT wafers collocated on both surfaces of a plate are utilized for extracting the mode-converted Lamb wave signals created by a notch. As harmonic input voltage signals are exerted on the collocated PZT wafers, the corresponding mode-converted Lamb wave signals become steady-state in the presence of damage. Applying fast Fourier transform to these mode-converted Lamb wave signals followed by a proper normalization, the EM signals associated with the mode conversion can be obtained. The theoretical finding of this paper is validated through spectral element simulations of a cantilever beam with a notch. The effects of the size and the location of the notch on the mode-converted EM signals are investigated as well. Finally, the applicability of the decomposed EM signals to reference-free damage diagnosis is discussed. | - |
dc.language | English | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.title | Investigating electro-mechanical signals from collocated piezoelectric wafers for the reference-free damage diagnosis of a plate | - |
dc.type | Article | - |
dc.identifier.wosid | 000290957800001 | - |
dc.identifier.scopusid | 2-s2.0-79956204940 | - |
dc.type.rims | ART | - |
dc.citation.volume | 20 | - |
dc.citation.issue | 6 | - |
dc.citation.publicationname | SMART MATERIALS STRUCTURES | - |
dc.contributor.localauthor | Sohn, Hoon | - |
dc.contributor.nonIdAuthor | Kim, Eun Jin | - |
dc.contributor.nonIdAuthor | Park, Hyun Woo | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | FREQUENCY REFLECTION CHARACTERISTICS | - |
dc.subject.keywordPlus | RECTANGULAR NOTCH | - |
dc.subject.keywordPlus | LAMB WAVE | - |
dc.subject.keywordPlus | HEALTH | - |
dc.subject.keywordPlus | ELEMENT | - |
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