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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....
17 p hcmute 15/12/2016 483 7
Từ khóa: Wavelet analysis, Crack identification, Detection of crack, Functionally graded material (FGM) plate, Vibration mode, XFEM
DISCRETE WAVELET TRANSFORMS BIOMEDICAL APPLICATIONSE
DWTs are constantly used to solve and treat more and more advanced problems. The DWT algorithms were initially based on the compactly supported conjugate quadrature filters (CQFs). However, a drawback in CQFs is due to the nonlinear phase effects such as spatial dislocations in multi-scale analysis. This is avoided in biorthogonal discrete wavelet transform (BDWT) algorithms, where the scaling and wavelet filters are symmetric and linear...
340 p hcmute 06/07/2012 458 3
Từ khóa: Biomedical Applications, of the Discrete Wavelet Transform, Discrete Wavelet Transform Based Selection, Discrete Wavelet Transform, Speech Analysis, Wavelets in Electrochemical Noise Analysis, Identification and Diagnostics