Using the Correlation Function in Ultrasonic Non-destructive Testing

M. Kreidl, P. Houfek

Abstract


This paper deals with ultrasonic signal de-noising by means of correlation. It is commonly known that the cross-correlation function shows the statistical dependence between two signals. In ultrasonic inspection, the measured signal is taken as the first signal. The most important aspect of this method is the choice of the second signal. Various types of the second signals can be tried.

Keywords


ultrasonic testing; flaw echo; signal noise reduction; cross-correlation

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ISSN 1210-2709 (Print)
ISSN 1805-2363 (Online)
Published by the Czech Technical University in Prague