DESTRUCTION-FREE AND CONTACTLESS INSPECTION METHOD AND INSPECTION APPARATUS FOR SURFACES OF COMPONENTS WITH ULTRASOUND WAVES

摘要

The invention relates to a method for the destruction-free and contactless inspection of components (3), in which ultrasound waves (6) are transmitted in a non-vertical, pre-specifiable incidence angle (9) onto the surface of the component (3) using an ultrasound transmission transducer (1) arranged at a distance from the surface of the component (3) and the intensity of the ultrasound waves (7), which are reflected by the surface of the component (3), is captured in a time-resolved and/or frequency-resolved manner by the group antenna elements (2n) of an ultrasound group antenna (2), which is configured to detect ultrasound waves (7), and, on this basis, the phase shift of the ultrasound waves, which are guided on the surface of the inspection body, is determined in relation to the ultrasound waves (7), which are reflected directly at the surface of the component (3).