G - Physics – 01 – N
Patent
G - Physics
01
N
349/42
G01N 29/04 (2006.01) G01N 29/11 (2006.01) G01N 29/40 (2006.01) G01N 29/44 (2006.01)
Patent
CA 1108283
ABSTRACT OF THE DISCLOSURE Disclosed is a method in which ultrasonic response signals res- ulting from interaction of a test pulse with a structural material are recognized by dynamically tracking the noise level and adding thereto a fixed level; a response signal to be recognized must exceed the resulting variable threshold level. The method provides greater consistency, as compared to prior art methods, in sensitivity as far as recognizing ultrasonic response signals and classifying them in a manner that permits consistent detection of flaws is concerned.
284422
Boms Heinz-Jurgen
Jannsen Klaus-Uwe
Kaiser Dieter
Quaye Mensa
Ries Karl
Fetherstonhaugh & Co.
Mannesmann Aktiengesellschaft
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