Method and device for ultrasound inspection of welds, particularly welds of blades on the disk of a bladed disk

Method for testing element welds on a body, the body and the elements that are welded to it forming a single-piece assembly, comprising the following steps:

• equip the free end of a poly-articulated robot with an ultrasound probe, fitted with an ultrasonic multi-element array transducer;
• insert the ultrasound probe into the space between two adjacent elements of the single-piece assembly, facing the welded joint, corresponding to one of the two elements for which the weld is to be tested;
• move the ultrasound probe along three-dimensional trajectories along the profile of the element for which the weld is to be tested;
• perform a sectorial electronic scanning in at least two non-parallel testing planes, preferably approximately orthogonal;
• and
• process the ultrasound signals output by the transducer in order to test the welds.