Automatic self-checking of test equipment

Details Automatic self-checking of test equipment Automatic self-checking of test equipment

G - Physics

01

N

349/35, 340/71,

G01N 29/00 (2006.01) G01N 29/30 (2006.01)

Patent

CA 1128622

ABSTRACT OF THE DISCLOSURE Equipment for ultrasonic testing structural materials includes transducers and test electronics normally operated in sequential test cycles each cycle including the generation of a test pulse to be set into the test object and subsequently upon interaction with the test object, return signals (echos) are received and processed, e.g. as to transit time, amplitude, contour, etc. Self-checking is carried out in three phases. One phase uses simulated receiver signals for operatively disconnected transducers, to be processed by the electronics as if they were echos; a second phase uses simulated transducer inputs and analogous processing and a third phase uses a reference body as test body simulation for conduction of "tests". The results of signal processing are compared with reference signals and correlation of deviations and absence of deviations is used to isolate malfunctions.

317037

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