Based on the finite element theory, a method is proposed for crack identification of simple beam via the wavelet analysis of vibration modal parameters. A cracked simple beam is simulated using finite element method, and its modal parameters, including first three-order vibration modes, are obtained. Then, these modal parameters are analyzed via mexh and db wavelets. The crack location of the simple beam is identified by the maximum of wavelet coefficients, which validates the proposed method. This research may be useful in crack identification of simple beam structures.
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