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dc.contributor.author박준홍-
dc.date.accessioned2018-03-16T06:11:15Z-
dc.date.available2018-03-16T06:11:15Z-
dc.date.issued2014-04-
dc.identifier.citation한국비파괴검사학회지, 2014, 34(1), P.38-43en_US
dc.identifier.issn1225-7842-
dc.identifier.urihttp://www.dbpia.co.kr/Article/NODE02374120-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/47957-
dc.description.abstract굽힘파 전파 특성을 이용하여 지지강성을 도출하고 이를 이용한 레일체결장치의 결함 검출 시험법을 제안하였다. 점탄성 패드로 지지되고 체결장치로 고정된 레일의 진동 응답은 주파수에 따라 지지단 동특성에 크게 영향을 받는다. 체결장치에 결함이 발생할 경우에는 구조적인 불연속성으로 인해 굽힘 파동의 전파 특성이 변화하게 된다. 이러한 변화를 감지하기 위해서 전달함수법을 이용해 주파수에 따라 변화하는 레일 지지단 동특성을 측정하였다. 연속 스프링으로 지지된 레일 응답으로부터 예측한 레일의 보존에너지를 이용해 결함에 대한 파동 전파의 민감도를 해석하였다. 민감도 해석 결과와 동적지지강성 변화를 측정하여 손상지수를 계산하고 결함 위치를 추정하였다.An experimental method based on flexural wave propagation is proposed for identification of structural damage in rail fastening systems. The vibration of a rail clamped and supported by viscoelastic pads is significantly influenced by dynamic support properties. Formation of a defect in the rail fastening system induces changes in the flexural wave propagation characteristics owning to the discontinuity in the structural properties. In this study, frequency-dependent support stiffness was measured to monitor this change by a transfer function method. The sensitivity of wave propagation on the defect was measured from the potential energy stored in a continuously supported rail. Further, the damage index was defined as a correlation coefficient between the change in the support stiffness and the sensitivity. The defect location was identified from the calculated damage index.en_US
dc.language.isoko_KRen_US
dc.publisher한국비파괴검사학회en_US
dc.subject레일체결장치en_US
dc.subject동적지지강성en_US
dc.subject굽힘파 전파en_US
dc.subject손상 지수en_US
dc.subjectRail Fastening Systemen_US
dc.subjectDynamic Support Stiffnessen_US
dc.subjectFlexural Wave Propagationen_US
dc.subjectDamage Indexen_US
dc.title굽힘파 전파 특성을 이용한 레일체결장치의 구조결함진단en_US
dc.title.alternativeIdentification of Structural Defects in Rail Fastening Systems Using Flexural Wave Propagationen_US
dc.typeArticleen_US
dc.relation.no1-
dc.relation.volume34-
dc.relation.page38-43-
dc.relation.journal비파괴검사학회지-
dc.contributor.googleauthor박정원-
dc.relation.code2014001156-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDIVISION OF MECHANICAL ENGINEERING-
dc.identifier.pidparkj-
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COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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