Damage detection of a rectangular plate by spatial wavelet based approach

Chih Chieh Chang, Lien Wen Chen

研究成果: Article同行評審

84 引文 斯高帕斯(Scopus)

摘要

This paper presents a technique for structure damage detection based on spatial wavelet analysis. Many damage detection methods require modal properties before and after damage. This method only needs the spatially distributed signals (e.g. the displacements or mode shapes) of the rectangular plate after damage. First, spatially distributed signals of the rectangular plate with damage are obtained by finite element method. The damaged region is represented as the elements with reduced stiffness. Then these spatially distributed signals are analyzed by wavelet transformation. It is observed that distributions of the wavelet coefficients can identify the damage position of rectangular plate by showing a peak at the position of the damage. It is also demonstrated that this method is very sensitivity to the damage size.

原文English
頁(從 - 到)819-832
頁數14
期刊Applied Acoustics
65
發行號8
DOIs
出版狀態Published - 2004 八月 1

All Science Journal Classification (ASJC) codes

  • 聲學與超音波

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