DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Seunghee | ko |
dc.contributor.author | Lee, Changgil | ko |
dc.contributor.author | Sohn, Hoon | ko |
dc.date.accessioned | 2010-06-10T06:17:42Z | - |
dc.date.available | 2010-06-10T06:17:42Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2010-06 | - |
dc.identifier.citation | JOURNAL OF SOUND AND VIBRATION, v.329, no.12, pp.2337 - 2348 | - |
dc.identifier.issn | 0022-460X | - |
dc.identifier.uri | http://hdl.handle.net/10203/18824 | - |
dc.description.abstract | A new concept of reference-free damage detection methodology is developed using transfer impedances to detect crack damage in a plate-like structure without using previously collected baseline data. Conventional impedance-based damage detection techniques have been shown to be vulnerable to other types of changes such as temperature variation that may not be relevant to defects of interest. One of the potential disadvantages of the conventional techniques is frequent false-alarms due to these undesirable variations that may occur in field applications. In order to reduce these false-alarms, this paper proposes a new methodology that utilizes transfer impedances obtained between two pairs of collocated PZT patches instead of the electromechanical impedance obtained at one PZT patch. The proposed technique utilizes Lamb mode conversion effects caused by the presence of crack damage in plate structures. Furthermore, an instantaneous damage classification is carried out by comparing mode conversion energy among several combinations of measured signals without any user-specified threshold or relying oil the baseline data. The feasibility of the proposed reference-free methodology using transfer impedances is investigated via a series of experiments conducted oil an aluminum plate. (C) 2009 Elsevier Ltd. All rights reserved. | - |
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), by the Grant (06KLSGC01) from Cutting-edge Urban Development-Korean Land Spatialization Research Project funded by Ministry of Land, Transport and Maritime Affairs, and by Applied Research Grant from the Agency for Defense Development (UC080019JD). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the funding agencies. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD | - |
dc.title | Reference-free crack detection using transfer impedances | - |
dc.type | Article | - |
dc.identifier.wosid | 000275582700004 | - |
dc.identifier.scopusid | 2-s2.0-76049111519 | - |
dc.type.rims | ART | - |
dc.citation.volume | 329 | - |
dc.citation.issue | 12 | - |
dc.citation.beginningpage | 2337 | - |
dc.citation.endingpage | 2348 | - |
dc.citation.publicationname | JOURNAL OF SOUND AND VIBRATION | - |
dc.identifier.doi | 10.1016/j.jsv.2009.04.010 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Sohn, Hoon | - |
dc.contributor.nonIdAuthor | Park, Seunghee | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | MODE | - |
dc.subject.keywordPlus | EXCITATION | - |
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