Full metadata record
DC FieldValueLanguage
dc.contributor.authorSu, Wei C.en_US
dc.contributor.authorLe, Tuyen Q.en_US
dc.contributor.authorHuang, Chiung S.en_US
dc.contributor.authorLin, Pei Y.en_US
dc.date.accessioned2018-08-21T05:53:13Z-
dc.date.available2018-08-21T05:53:13Z-
dc.date.issued2018-01-01en_US
dc.identifier.issn0307-904Xen_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.apm.2017.02.006en_US
dc.identifier.urihttp://hdl.handle.net/11536/144417-
dc.description.abstractStructural damage detection based on the changes of dynamic properties is a major topic for structural health monitoring. In this paper, efforts are made to extend the flexibility based damage localization methods, especially the damage locating vectors (DLVs) method, to the case of earthquake vibration, where the finite element model and mass matrices are not available. First, a new method using continuous Cauchy wavelet transform (CCWT) and state-variable time series model is proposed to identify the modal parameters of a structure. Then the flexibility matrix can be constructed from the identified modal parameters. Second, a modified DLVs damage assessment approach is also proposed to locate damage positions in the structure through a weighted relative displacement index (WRDI). This index is calculated by using DLVs vectors determined from the change of flexibility matrix before and after damage of the structure. Numerical analyses demonstrate that the proposed process can indeed monitor the variation of stiffness for each storey. These two approaches are further applied to process the dynamic responses of three-storey and eight-storey steel frames in shaking table tests. The proposed scheme is also proved to be superior to mode shape based methods (CMS, COMAC) in monitoring the variation of stiffness for each storey. (C) 2017 Elsevier Inc. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectStructural damage detectionen_US
dc.subjectDLVs methoden_US
dc.subjectContinuous wavelet transformen_US
dc.subjectSystem identificationen_US
dc.subjectARX modelen_US
dc.titleLocating damaged storeys in a structure based on its identified modal parameters in Cauchy wavelet domainen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.apm.2017.02.006en_US
dc.identifier.journalAPPLIED MATHEMATICAL MODELLINGen_US
dc.citation.volume53en_US
dc.citation.spage674en_US
dc.citation.epage692en_US
dc.contributor.department土木工程學系zh_TW
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.identifier.wosnumberWOS:000423247300042en_US
Appears in Collections:Articles