Wavelet-Based Damage Detection Method for Beam-Like Structures

Authors : Hakan GÖKDAĞ

Pages : 339-349

View : 19 | Download : 12

Publication Date : 2010-07-06

Article Type : Other Papers

Abstract :This paper is concerned with a novel wavelet-based damage detection method for beam-like structures. The method employs the orthogonal wavelet transform insert ignore into journalissuearticles values(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 insert ignore into journalissuearticles values(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.     Key Words : Wavelet analysis, continuous wavelet transform, orthogonal wavelet transform, vibration modes, damage detection.
Keywords : Wavelet analysis, continuous wavelet transform, orthogonal wavelet transform, vibration modes, damage detection