외팔보에 대한 가진력수준제어를 통한 피로균열규명기법의 실험적 검증Experimental Verifications of Fatigue Crack Identification Method Using Excitation Force Level Control for a Cantilever Beam

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dc.contributor.author김도균ko
dc.contributor.author이순복ko
dc.date.accessioned2013-03-04T21:56:47Z-
dc.date.available2013-03-04T21:56:47Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2004-10-
dc.identifier.citation대한기계학회논문집 A, v.28, no.10, pp.1467 - 1474-
dc.identifier.issn1226-4873-
dc.identifier.urihttp://hdl.handle.net/10203/84306-
dc.description.abstractIn this study, a new damage identification method for beam-like structures with a fatigue crack is proposed. which does not require comparative measurement on an intact structure but require several measurements at different level of excitation forces on the cracked structure. The idea comes from the fact that dynamic behavior of a structure with a fatigue crack changes with the level of the excitation force. The 2$^{nd}$ spatial derivatives of frequency response functions along the longitudinal direction of a beam are used as the sensitive indicator of crack existence. Then, weighting function is employed in the averaging process in frequency domain to account for the modal participation of the differences between the dynamic behavior of a beam with a fatigue crack at the low excitation and one at the high excitation. Subsequently, a damage index is defined such that the location and level of the crack may be identified. It is shown from the analysis of vibration measurements in this study that comparison of frequency response characteristics of a beam with a single fatigue crack at different level of excitation forces enables an effective detection of the crack.-
dc.languageKorean-
dc.publisher대한기계학회-
dc.title외팔보에 대한 가진력수준제어를 통한 피로균열규명기법의 실험적 검증-
dc.title.alternativeExperimental Verifications of Fatigue Crack Identification Method Using Excitation Force Level Control for a Cantilever Beam-
dc.typeArticle-
dc.type.rimsART-
dc.citation.volume28-
dc.citation.issue10-
dc.citation.beginningpage1467-
dc.citation.endingpage1474-
dc.citation.publicationname대한기계학회논문집 A-
dc.identifier.kciidART000937089-
dc.contributor.localauthor이순복-
dc.contributor.nonIdAuthor김도균-
dc.subject.keywordAuthorFatigue Crack Identification(피로균열규명)-
dc.subject.keywordAuthorExcitation Force Level Control(가진력수준 제어)-
dc.subject.keywordAuthorCantilever Beam(외팔보)-
dc.subject.keywordAuthorThe 2nd Spatial Derivatives of Frequency Response Functions(주파수응답함수의 공간 2차 미분)-
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ME-Journal Papers(저널논문)
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