Title :
Measurement of ultrasonic velocity in viscoelastic materials using the wavelet transform
Author :
Moreno, E. ; Garcia, Francisco ; Castillo, Maribel
Author_Institution :
DISCA, Univ. Nacional Autonoma de Mexico, Mexico City, Mexico
Abstract :
The measurement of the time propagation of ultrasonic pulses is a very important tool in ultrasonics. In this paper, a method based on the continuous wavelet transform (CWT) is presented. Experiments have been made on steel and acrylic, this last one as a case of viscoelastic material, where the CWT shows better properties than other digital methods.
Keywords :
acoustic signal processing; plastics; steel; ultrasonic materials testing; ultrasonic velocity measurement; wavelet transforms; US NDT; acrylic; continuous wavelet transform; digital signal processing; steel; time propagation; ultrasonic pulses; ultrasonic velocity measurement; viscoelastic materials; Building materials; Continuous wavelet transforms; Elasticity; Pulse measurements; Steel; Time measurement; Ultrasonic variables measurement; Velocity measurement; Viscosity; Wavelet transforms;
Conference_Titel :
Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE
Conference_Location :
Caesars Tahoe, NV
Print_ISBN :
0-7803-5722-1
DOI :
10.1109/ULTSYM.1999.849524
