| 摘要 |
The invention relates to the field of ultrasonic imaging and is particularly useful in the non-destructive monitoring of parts. The method according to the invention includes: a step (712) of acquiring a set of M x N ultrasonic signals S ij -(t), M being the number of transmitters i, N being the number of receivers and t being a variable representing time, a step (73) of determining the theoretical times Tij(P) necessary for the ultrasonic signal S ij -(t) to travel the various paths from one of the transmitters i to one of the receivers; while passing through the point P in question, a step (91) of determining the anglesθij(P) formed between a portion of each path joining point P, and a portion of said path leaving point P, and for each point P, and a step (92) of determining a weighted sum / (P) of the amplitudes extracted from the signals S ij -(t) at the moments Tij(P) corresponding to the point P in question, the weighting being a function of the anglesθij(P). |
