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Direct method of damage localization for civil structures via shape comparison of dynamic response measurements

TitleDirect method of damage localization for civil structures via shape comparison of dynamic response measurements
Publication TypeJournal Article
Year of Publication2012
AuthorsDanai K, Civjan SA, Styckiewicz MM
JournalComputers & Structures
Volume92-93
Start Page297
Pagination297-307
Date Published09/2012
KeywordsDamage Detection, Damage Localization, Health Monitoring
Abstract

A method of damage localization is introduced which relies on continuous wavelet trans-formation of the structure's forced dynamic response. Continuous wavelet transforms rep-resent the shape attributes of time series and enhance their delineation in the time-scale domain. As such, they allow identification of localized shape changes of dynamic responses for signal change detection. This change detection capacity enables identifying the damage-affected responses as well as formulating the characteristic effects of individual damaged components on the modeled dynamic response. The results obtained from simulated acceleration of a nine-story building are 90% and 100% accurate with the steady-state and transient accelerations, respectively.

DOI10.1016/j.compstruc.2011.10.016