Structural damage detection based on covariance of covariance matrix with general white noise excitation

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• 作者：Yi Hui^a ; ^c ; Siu Seong Law^b ; ^{cesslaw@connect.polyu.hk} ; Chiu Jen Ku^c
• 关键词：Damage detection ; Dynamics ; White noise excitation ; Acceleration response ; Cross-covariance function
• 刊名：Journal of Sound and Vibration
• 出版年：2017
• 出版时间：17 February 2017
• 年：2017
• 卷：389
• 期：Complete
• 页码：168-182
• 全文大小：762 K
• 卷排序：389

文摘

Autocorrelation function of acceleration from structure under random excitations is analytically derived. Cross-covariance functions of measured accelerations is used to form the sensitive matrix. Two strategies are proposed for reducing the number of sensors required for damage detection.