piezo-electric sensor optimizes multi-element rotary

The present invention relates to a control method for the ultrasonic testing of a connecting region (2, 4) comprising a transducer (1) comprises a plurality of transmitter elements / receiver (3) of ultrasonic waves for transmitting ultrasonic waves towards the connecting region (2, 4) and to receive ultrasonic waves reflected on the connecting region (2, 4), the transmitter / receiver elements (3) of ultrasonic waves is arranged so as to obtain a transducer (1) having an ultrasonic detection surface formed by at least one assembly (5) of transmitter elements / receiver (3) of ultrasonic waves according to at least one extending direction (x), each set (5) transmitting / receiving elements (3) of ultrasonic waves comprising at least one alignment of transmitter elements / receiver (3) of ultrasonic waves, said transducer is characterized in that the set of emitter elements / receptors wave ul trasonores is rotatable in rotation about an axis O of rotation.