Improved nondestructive ultrasound investigation with coupling control

摘要

The invention relates to a method for ultrasonic testing of a sample (7), which comprises a plurality of test cycles, each of which a transmission of at least one ultrasonic pulse in the test piece (7) by means of a plurality of ultrasonic transducer (2) and a reception of the passing through the lamp (7), at least one ultrasonic pulse through the or, if appropriate, further ultrasonic transducer (2) contains. The method is distinguished by the fact that the plurality of ultrasonic transducer (2) phases can be controlled and at least one antenna arrays (1) and that the method comprises at least a first test cycle, wherein the phases controllable ultrasonic transducer (2) of the at least one phased array (1) during the transmission are actuated in such a way that the rear of the sample (7) by means of this radiation is detected during the reception and in that the method comprises at least a second test cycle, wherein the phases controllable ultrasonic transducer (2) of the same, of at least one phased array (1) during the transmission are actuated in such a way that a from the first test cycle, different main propagation direction (8, 8 '') of the emitted ultrasound pulse in the test piece (7) is achieved. The present invention also relates to an associated device and use.