Damage Identification in Plate-type Structures Using 2-D Spatial Wavelet Transform and Flexibility-Based Methods
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Wavelet-based damage identification using vibration measurements has received significant attention over the past two decades and wavelet transforms, as signal processing techniques, have become a practical and useful methodology in the field of damage identification. In this work, generalized flexibility matrix (GFM) and uniform load surface (ULS) in conjunction with a 2-D discrete wavelet transform are used to find damage locations in plate-type structures. In order to evaluate these methods, a finite element (FE) model of a plate is used and the effects of number of involved modes, damage location, damage severity, and different boundary conditions are studied.
Keywordsdamage detection discrete wavelet transform (DWT) uniform load surface (ULS) generalized flexibility matrix (GFM)
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- Mallat, S. (1999). A wavelet tour of signal processing. Academic press,Google Scholar
- Shukla, P.D. (2003). Complex wavelet transforms and their applications. Glasgow (United Kingdom)), M Phil Thesis, Dept of Electronic and Electrical Engineering, University of Strathclyde Google Scholar
- Starck, J.L., Murtagh, F., Fadili, J.M. (2010). Sparse image and signal processing: wavelets, curvelets, morphological diversity. Cambridge University Press,Google Scholar