METHOD FOR DETERMINING THE RESILIENCE OF A WELDED JOINT AND A DEVICE FOR MEASURING THE SPEED OF PROPAGATION OF SURFACE ULTRASONIC VIBRATIONS DESIGNED FOR THE REALIZATION OF THE METHOD

摘要

Ultrasonic waves are produced at the surface of a thin sheet metal (1) welded to a substrаtе (28): it has been observed that the propagation speed of the surface waves can thus be correlated to the resilience of the welded assembly to enable non-destructive controls.