Wavelet-Based Damage Detection Method for Beam-Like Structures

被引：0

作者：

Gokdag, Hakan ^{[1
]}

机构：

[1] Uludag Univ, Fac Engn & Architecture, Dept Mech Engn, TR-16059 Gorukle, Turkey

来源：

GAZI UNIVERSITY JOURNAL OF SCIENCE | 2010年 / 23卷 / 03期

关键词：

Wavelet analysis; continuous wavelet transform; orthogonal wavelet transform; vibration modes; damage detection;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This paper is concerned with a novel wavelet-based damage detection method for beam-like structures. The method employs the orthogonal wavelet transform (OWT), and is based on extracting an approximation function from the damaged mode of structure. This approximation function is considerably well correlated with the undamaged structural mode. Exploiting this function, the continuous wavelet transform (CWT) coefficients of both the damaged mode and the approximation function can be computed, and thus a reliable damage index can be obtained by taking their difference. The numerical simulations reveal that the proposed index is more capable in capturing damage-induced singularities than the classical approach based on using only the damaged mode.

引用

页码：339 / 349

页数：11

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