Wavelet-based analysis of mode shapes for statistical detection and localization of damage in beams using likelihood ratio test

详细信息    查看全文

• 作者：Vahid Shahsavari^a ; ^{Vahid.Shahsavari.1@ulaval.ca} ; Luc Chouinard^b ; ^{Luc.Chouinard@mcgill.ca} ; José ; e Bastien^a ; ^{Josee.Bastien@gci.ulaval.ca}
• 关键词：Damage detection and localization ; Mode shape ; Wavelet ; Principal component analysis ; Likelihood ratio
• 刊名：Engineering Structures
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：132
• 期：Complete
• 页码：494-507
• 全文大小：5882 K
• 卷排序：132

文摘

The most likely location of damage was studied on an experimental beam. The localization procedure was based on a sequence of statistical procedures. Damage detection corresponds to the localization of damage at small levels. The mechanism relies on signal denoising of a set of repeat measurements. Statistical analysis was performed to assess significant changes on selected features.