On the problem of increasing the noise immunity of ultrasonic flaw-detecting devices

The problem of increasing the noise immunity of ultrasonic flaw-detecting devices is considered in the case of using complex signals. An approach to the choice of the type of signal and the processing technique is substantiated. A special-purpose flaw detector in which complex phase-coded signals in...

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Bibliographic Details
Published in:Russian journal of nondestructive testing 2009-08, Vol.45 (8), p.561-569
Main Authors: Martynenko, A. V., Glagolev, A. E.
Format: Article
Language:English
Subjects:
Acoustic Methods
Characterization and Evaluation of Materials
Chemistry and Materials Science
Materials Science
Structural Materials
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Summary:The problem of increasing the noise immunity of ultrasonic flaw-detecting devices is considered in the case of using complex signals. An approach to the choice of the type of signal and the processing technique is substantiated. A special-purpose flaw detector in which complex phase-coded signals in the frequency range 0–1 MHz is used is described. The results of the experimental studies of the noise immunity and resolution of such a flaw detector are described [1].
ISSN:1061-8309
1608-3385
DOI:10.1134/S1061830909080087