Sensitivity analysis of crack detection in beams by wavelet technique

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Ser-Tong Quek
  • Quan Wang
  • Liang Zhang
  • Kian-Keong Ang

Detail(s)

Original languageEnglish
Pages (from-to)2899-2910
Journal / PublicationInternational Journal of Mechanical Sciences
Volume43
Issue number12
Publication statusPublished - Dec 2001
Externally publishedYes

Abstract

This paper examines the sensitivity of wavelet technique in the detection of cracks in beam structures. Specifically, the effects of different crack characteristics, boundary conditions, and wavelet functions employed are investigated. Crack characteristics studied include the length, orientation and width of slit. The two different boundary conditions considered are simply supported and fixed end support, and the two types of wavelets compared in this study are the Haar and Gabor wavelets. The results show that the wavelet transform is a useful tool in detection of cracks in beam structures. The dimension of the crack projected along the longitudinal direction can be deduced from the analysis. The method is sensitive to the curvature of the deflection profile and is a function of the support condition. For detection of discrete cracks, Haar wavelets exhibit superior performance. © 2001 Elsevier Science Ltd. All rights reserved.

Research Area(s)

  • Beams, Crack detection, Finite elements, Haar and Gabor wavelets, Sensitivity study

Citation Format(s)

Sensitivity analysis of crack detection in beams by wavelet technique. / Quek, Ser-Tong; Wang, Quan; Zhang, Liang et al.

In: International Journal of Mechanical Sciences, Vol. 43, No. 12, 12.2001, p. 2899-2910.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review