3rd French conference on acoustics
J. Phys. IV France 04 (1994) C5-1375-C5-1378
Analyse des échos ultrasonores par ondelettesS.E. MOUBARIK1, D. DE VADDER1 and Ph. BENOIST2
1 Laboratoire de Mécanique, URA D0850 du CNRS, Ecole Centrale Paris, Grande Voie des Vignes, 92295 Châtenay Malabry, France
2 CEA/CEREM/STA/LCUS, CEN-Saclay, 91191 Gif-sur-Yvette cedex, France
We investigate the time-frequency localization of the continuous wavelet transform as a tool for extracting useful informations about targets from their ultrasonic echoes. A disbond problem is presented as an example. We also present and discuss the use of experimental ultrasonic echoes as analyzing wavelets. This technique is used to study the effect of targets geometry on the received echoes.
© EDP Sciences 1994