A method and device for non-destructive testing of a unit under test, by means of ultrasound.

摘要

The method according to the invention serves for the nondestructive testing of a test piece by means of ultrasound. It comprises the transmitting and receiving ultrasonic signals into and out of the unit under test by means of an array (10) of m independently controllable ultrasonic transducers (12). For this purpose, a plurality of sub-groups gh of ultrasound transducers (12) in each case by means of a sub-aperture processor (20) is controlled individually and true to phase, so that these in each case an ultrasonic pulse in one of the specific subgroup spatial region associated with vh of the test specimen einschallen. From time resolution received ultrasound echo signals of the in each case of a subgroup of gh associated ultrasonic transducer (12), at least one output signal generated by this from the subaperture processor (20) a suitable beam forming - a method to be subjected to a. By means of a superordinate control unit (40) in an image of the entire the volume v_insp the unit under test is generated. Furthermore, the invention relates to a testing device for carrying out a method for non-destructive testing of a unit under test, is arranged by means of ultrasound.