METHOD FOR DETECTION AND CLASSIFICATION OF FLAWS IN COMPONENTS BY MEANS OF ULTRASOUND

摘要

A method for detection and classification of imperfections in components is proposed having the following stages: Irradiation of pulsed ultrasonic waves from electrical emission pulses on several points of the surface of the component to be examined, reception of the reflected ultrasonic waves at several points of the surface for generating multiple electrical reception signals, analysis and evaluation of the electrical reception signals in terms of their amplitude information with reference to the positions of the points of the irradiated ultrasonic waves and the detected reflected sound waves for generating a three-dimensional spatial distribution of the scattering properties of the component, wherein in addition to the amplitude information the phase angle of scattering readouts is evaluated and the phase information is assigned to the three-dimensional spatial distribution of the scattering properties of the component, with the amplitude information being invoked for detecting the imperfections, and the amplitude information and the phase information of the three-dimensional spatial distribution being invoked for classification.