Modélisation impulsionnelle de l'interaction entre un faisceau ultrasonore et un défaut proche de la paroi externe

Abstract
In non destructive testing, the corner effect is the result of the interaction between an ultrasonic focused beam and a plane defect located near the opposite surface of the controlled block. This paper presents a model developed in order to predict corner effect echoes. Its principle is based on the computation of the spatial impulse response for both transmitting and receiving mode. Some results are presented and compared to experiment.