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CRACK IDENTIFICATION IN FUNCTIONALLY GRADED MATERIAL PLATE BY WAVELET ANALYSIS OF VIBRATION MODE

In this paper, a method based on the wavelet analysis of modal vibration data is introduced to detect the cracks in the functionally graded material (FGM) plate. In practice, the modal vibration data which include the natural frequencies and mode shapes of cracked plate are usually defined by measured equipments. However, due to the unavailability of experimental data, numerical analysis with noisy modal data is used for simulation instead. The modal vibration data, which are the free flexural vibrations of cracked FGM plate in this paper, are then used as signal for wavelet analysis to determine the position of the crack....

Từ khóa: Wavelet analysis, Crack identification, Detection of crack, Functionally graded material (FGM) plate, Vibration mode, XFEM

17 p ovanketv4 15/12/2016 489 7

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