Techno Press
Techno Press

Smart Structures and Systems   Volume 22, Number 5, November 2018, pages 621-630
A damage localization method based on the singular value decomposition (SVD) for plates
Zhi-Bo Yang, Jin-Tao Yu, Shao-Hua Tian, Xue-Feng Chen and Guan-Ji Xu

Abstract     [Full Text]
    Boundary effect and the noise robustness are the two crucial aspects which affect the effectiveness of the damage localization based on the mode shape measurements. To overcome the boundary effect problem and enhance the noise robustness in damage detection, a simple damage localization method is proposed based on the Singular Value Decomposition (SVD) for the mode shape of composite plates. In the proposed method, the boundary effect problem is addressed by the decomposition and reconstruction of mode shape, and the noise robustness in enhanced by the noise filtering during the decomposition and reconstruction process. Numerical validations are performed on plate-like structures for various damage and boundary scenarios. Validations show that the proposed method is accurate and effective in the damage detection for the two-dimensional structures.
Key Words
    damage localization; singular value decomposition; plate
Zhi-Bo Yang, Jin-Tao Yu, Shao-Hua Tian and Xue-Feng Chen: School of Mechanical Engineering, Xi\'an Jiaotong University, 710049, Xi\'an, P.R. China
The State Key Laboratory for Manufacturing Systems Engineering, Xi\'an, P.R. China
Guan-Ji Xu: School of Mechanical Engineering, Chongqing University, 400044, Chongqing, P.R. China
Engineering Laboratory of CRRC Qingdao Sifang Co. LTD. 266111, Qingdao, P.R. China


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