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Structural Engineering and Mechanics Volume 40, Number 1, October10 2011 , pages 13-28 DOI: https://doi.org/10.12989/sem.2011.40.1.013 |
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Structural damage identification of plates based on modal data using 2D discrete wavelet transform |
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A. Bagheri, G. Ghodrati Amiri, M. Khorasani and H. Bakhshi
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| Abstract | ||
| An effective method for detection linear flaws in plate structures via two-dimensional discrete wavelet transform is proposed in this study. The proposed method was applied to a four-fixed supported rectangular plate containing damage with arbitrary length, depth and location. Numerical results identifying the damage location are compared with the actual results to demonstrate the effectiveness of the proposed method. Also, a wavelet-based method presented for de-noising of mode shape of plate. Finally, the performance of the proposed method for de-noising and damage identification was verified using experimental data. Comparison between the location detected by the proposed method, and the plate | ||
| Key Words | ||
| damage detection; de-noising; plate; wavelet transform; damage location | ||
| Address | ||
| A. Bagheri: Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA G. Ghodrati Amiri, M. Khorasani and H. Bakhshi: Center of Excellence for Fundamental Studies in Structural Engineering, School of Civil Engineering, Iran University of Science & Technology, PO Box 16765-163, Narmak, Tehran 16846, Iran | ||