Method for ultrasonic control of weld joints

摘要

The ultrasonic control of weld joints (1) assembling two abutted components (2, 3) consists of displacing, using a time-of-flight diffraction technique, in the longitudinal or circumferential direction along the weld joint at least one couple formed from a first transducer (5) and a second transducer (6), one transmitting and the other receiving ultrasonic waves. The transducers are laterally positioned on either side of the weld joint and comprising piezoelectric ceramics or crystals, in a manner to be able to detect all defects in the joint located at a thickness of at least 5 mm; displacing along the weld joint, using the inclined longitudinal wave technique, at least a third transducer, so as to detect any defect in the joint located at a thickness ranging between 0.5 and 15 mm. An Independent claim is also included for putting this method of ultrasonic control into service.