Title :
Composite damage identification based on lamb wave and redundant second generation wavelet
Author :
Li Xiang ; Chen Xuefeng ; Yang Zhibo ; Zhu Xiaojun
Author_Institution :
State Key Lab. for Manuf. Syst. Eng., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
Aiming at achieving composite materials damage identification of Structure Health Monitoring (SHM), an preprocessing algorithm of Redundant Second Generation Wavelet (RSGW) considering neighboring coefficients is introduced, which can denoises Lamb wave signals from noise flooding and structure complexity conditions for damage features extraction and further calculations. The practicability is validated through experiment operated in composite damage monitoring system.
Keywords :
acoustic signal processing; composite materials; condition monitoring; feature extraction; signal denoising; structural engineering; surface acoustic waves; Lamb waves; RSGW; SHM; composite materials damage identification; damage feature extraction; noise flooding; noise structure complexity; redundant second generation wavelet; signal denoising; structure health monitoring; Feature extraction; Laminates; Monitoring; Noise reduction; Signal processing algorithms; Signal to noise ratio; Wavelet coefficients; Lamb wave; SHM; composites; denoising; redundant second generation wavelet;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International
Conference_Location :
Graz
Print_ISBN :
978-1-4577-1773-4
DOI :
10.1109/I2MTC.2012.6229254
