Structural Engineering and Mechanics

  • 제40권1호
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  • Pages.13-28
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  • 2011
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Structural damage identification of plates based on modal data using 2D discrete wavelet transform

  • Bagheri, A. (Department of Civil and Environmental Engineering, University of Pittsburgh) ;
  • Ghodrati Amiri, G. (Center of Excellence for Fundamental Studies in Structural Engineering, School of Civil Engineering, Iran University of Science & Technology) ;
  • Khorasani, M. (Center of Excellence for Fundamental Studies in Structural Engineering, School of Civil Engineering, Iran University of Science & Technology) ;
  • Bakhshi, H. (Center of Excellence for Fundamental Studies in Structural Engineering, School of Civil Engineering, Iran University of Science & Technology)
  • 투고 : 2010.01.27
  • 심사 : 2011.06.24
  • 발행 : 2011.10.10
⟨ 이전 논문 다음 논문 ⟩

초록

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's actual damage location revealed that the methodology can be used as an accessible and effective technique for damage identification of actual plate structures.

키워드

참고문헌

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  12. Comparisons of wavelets and contourlets for vibration-based damage identification in the plate structures pp.2048-4011, 2019, https://doi.org/10.1177/1369433218824903
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  16. Performance of Damage Identification Based on Directional Wavelet Transforms and Entopic Weights Using Experimental Shearographic Testing Results vol.21, pp.3, 2011, https://doi.org/10.3390/s21030714
  17. Damage detection on rectangular laminated composite plates using wavelet based convolutional neural network technique vol.278, pp.None, 2021, https://doi.org/10.1016/j.compstruct.2021.114656
  18. A directional continuous wavelet transform of mode shape for line-type damage detection in plate-type structures vol.167, pp.no.pa, 2022, https://doi.org/10.1016/j.ymssp.2021.108510