| 摘要 |
FIELD: physics. ^ SUBSTANCE: disclosed is a method of detecting and classifying defects in components, involving the following steps: emitting pulsed ultrasonic waves, converted from electric pulses at several places on the surface of the investigated structural component; receiving the reflected ultrasonic waves from several places on said surface in order to generate received electrical signals; analysing and evaluating the received high-frequency electrical signals using the position of places of the emitted ultrasonic waves and the received reflected sound waves in order to create a three-dimensional local distribution of scattering properties of the structural component; where in addition to information on amplitude, the phase angle of the scattering process is estimated and assigned to the three-dimensional local distribution of scattering properties of the structural component, where information on amplitude is used to detect defects, and information on both amplitude and phase of the three-dimensional local distribution is used for classification. ^ EFFECT: high reliability of data when detecting defects. ^ 6 cl, 1 dwg |
