Classifying defects in structural materials pursuant to...

Details Classifying defects in structural materials pursuant to... Classifying defects in structural materials pursuant to...

G - Physics

01

N

349/42

G01N 29/04 (2006.01) G01B 17/00 (2006.01) G01N 29/06 (2006.01) G01N 29/11 (2006.01) G01N 29/30 (2006.01) G01N 29/44 (2006.01) G01N 29/48 (2006.01)

Patent

CA 1148650

D-6689 CLASSIFYING DEFECTS IN STRUCTURAL MATERIALS PURSUANT TO DETECTION BY MEANS OF ULTRASONICS ABSTRACT OF THE DISCLOSURE The wave form of an ultrasonic flaw echo is analyzed by generating from the signal a complex signal function and determin- ing the location of the peak in the complex function plane. The angle of the vector representing the peak is normalized by means of analogously processing reference echos, and the normalized peak displacement angle is used as discriminating criterion to separate harmless errors from harmful ones.

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