Ultrasonic detection and characterization process for defects in dissimilar materials

摘要

The present invention describes the following steps: -For each of the plurality of probe positions (z), in the case of multiple configurations of the multi-element probe (1), the ultrasonic waves are emitted by at least one transmitting transducer (14) and , At least one receiving transducer (15) acquires the measurement signal, -implementation of focusing and acquisition algorithm for each probe position (z) of the image, where each pixel of the image is associated with a focused amplitude. Represents the probed point (w) of the material being-for each probed point (w), the measurement of the central tendency of the amplitude and the determination of the function representing the variability of the amplitude-for each image, the amplitude Methods for detecting and characterizing ultrasonic defects in dissimilar materials, including correction,-detection and characterization of material defects from corrected images.