DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, HW | ko |
dc.contributor.author | Kim, SB | ko |
dc.contributor.author | Sohn, Hoon | ko |
dc.date.accessioned | 2010-06-10T02:12:16Z | - |
dc.date.available | 2010-06-10T02:12:16Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2009-11 | - |
dc.identifier.citation | WAVE MOTION, v.46, no.7, pp.451 - 467 | - |
dc.identifier.issn | 0165-2125 | - |
dc.identifier.uri | http://hdl.handle.net/10203/18802 | - |
dc.description.abstract | This study investigates the time reversal process (TRP) of Lamb wave signals which are transmitted and received by piezoelectric transducers bonded on plate-like structures. A number of previous studies have paid attention to spatial and temporal refocusing capability of an original excitation through the TRP in highly dispersive and complex media. However, when the TRP is applied to Lamb waves in a homogeneous regular waveguide, the refocusing capability is limited due to permanent residual side bands even if the duration of the time reversed signal increases. Based on the reciprocity of elastodynamics and linear piezoelectricity, theoretical interpretation is conducted for the main and residual side bands of the reconstructed signal in the time domain. In particular, the interpretation includes the temporal effect of velocity and amplitude dispersions, the existence of multi-modes, and the reflections from boundaries during the TRP. Then, numerical and experimental tests are conducted to validate the theoretical findings of this paper. Practical issues for the successful implementation of the TRP of Lamb waves are briefly addressed as well. (C) 2009 Elsevier B.V. All rights reserved. | - |
dc.description.sponsorship | This work was supported by Korea Research Foundation Grant funded by the Korean Government (MOEHRD, Basic Research Promotion Fund) (KRF-2008-331-D00590), in which main calculations were performed by using the supercomputing resource of the Korea Institute of Science and Technology Information (KISTI), and the Radiation Technology Program under Korea Science and Engineering Foundation (KOSEF) and the Ministry of Science and Technology (M20703000015-07N0300- 01510). The second author would like to acknowledge the graduate fellowship program from Samsung Scholarship in Seoul, Korea. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Understanding a time reversal process in Lamb wave propagation | - |
dc.type | Article | - |
dc.identifier.wosid | 000272090300003 | - |
dc.identifier.scopusid | 2-s2.0-70350022446 | - |
dc.type.rims | ART | - |
dc.citation.volume | 46 | - |
dc.citation.issue | 7 | - |
dc.citation.beginningpage | 451 | - |
dc.citation.endingpage | 467 | - |
dc.citation.publicationname | WAVE MOTION | - |
dc.identifier.doi | 10.1016/j.wavemoti.2009.04.004 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Sohn, Hoon | - |
dc.contributor.nonIdAuthor | Park, HW | - |
dc.contributor.nonIdAuthor | Kim, SB | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Lamb wave | - |
dc.subject.keywordAuthor | Time reversal process (TRP) | - |
dc.subject.keywordAuthor | Within-mode dispersion | - |
dc.subject.keywordAuthor | Multimode dispersion | - |
dc.subject.keywordAuthor | Reflections | - |
dc.subject.keywordAuthor | Amplitude dispersion | - |
dc.subject.keywordAuthor | Regular waveguide | - |
dc.subject.keywordAuthor | Piezoelectric transducer | - |
dc.subject.keywordAuthor | Reference-free NDT | - |
dc.subject.keywordPlus | COMPOSITE STRUCTURES | - |
dc.subject.keywordPlus | CHAOTIC CAVITIES | - |
dc.subject.keywordPlus | DAMAGE | - |
dc.subject.keywordPlus | ACOUSTICS | - |
dc.subject.keywordPlus | PLATES | - |
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