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《ACTA MATERIAE COMPOSITAE SINICA》 1997-04
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DAMAGE DETECTION OF THE COMPOSITE MATERIALS BASED ON WAVELET PACKETS

YaoJun Wu Tao Baoqi* Shi Xizhi(National Key Laboratory for Vibration, Shock & Noise, Shanghai Jiao Tong University, Shanghai 200030)(*Nanjing University of Aeronautics & Astronautics, Nanjing 210016)  
An approach to feature extraction and recognition of the characteristic signal in the field of the damage detection of the composite materials is studied by the wavelet packets that disintegrate the signal into different frequency bands. These features are fed into the wavelet neural network as the input patterns for training and classifying. The experiments are conducted to demonstrate the feasibility of the proposed method.
【Fund】: 国家自然科学基金 航空基金
【CateGory Index】: TB33
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