Title :
Wavelet analysis for ultrasonic crack detection and modelization
Author :
Lefebvre, J.-P. ; Lasaygues, P.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
Wavelet analysis has been applied as a signal processing tool for ultrasonic crack detection at an interface. The basic idea is to discriminate signatures in the time-frequency frame, precisely in the time-scale frame. The tool is also shown to be a good one to qualify modelling of the interaction between waves and flaws. It also allows one to reject parasitic distorted signals
Keywords :
acoustic signal processing; crack detection; time-frequency analysis; ultrasonic diffraction; ultrasonic materials testing; wavelet transforms; US wave diffraction; interface; parasitic distorted signal rejection; signal processing tool; signature discrimination; time-frequency frame; time-scale frame; ultrasonic crack detection; wave-flaw interaction modelling; wavelet analysis; Acoustic diffraction; Acoustic signal processing; Acoustic testing; Crack detection; Frequency domain analysis; Nondestructive testing; Time domain analysis; Wavelet transforms;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401790
