The effect of distortion models on characterisation of real defects using ultrasonic arrays

Characterisation of real defects is one of the main challenges in ultrasonic non-destructive testing (NDT), especially for small defects having irregular shapes. Traditional methods such as ultrasonic array imaging are limited by the image resolution, and in this paper, we consider using the scattering matrix which is extractable from the full matrix of transmit–receive array data. We describe a procedure in which the experimental measurements...