The extraction method for dispersion curves from spectrograms using Hough transform

A Hough transform-based method is developed for the extraction of dispersion curves from spectrograms. This method has been successfully tested using experimental data from both an acoustic emission (AE) signal simulator, and actual AE sources. The method determines the distance to the signal source...

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Bibliographic Details
Published inJournal of acoustic emission Vol. 29; p. 232
Main Authors Terentyev, D.A, Barat, V.A, Bulygin, K.A
Format Journal Article
LanguageEnglish
Published Acoustic Emission Group 01.01.2011
Subjects
Acoustic emission testing
Methods
Sensors
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Summary:A Hough transform-based method is developed for the extraction of dispersion curves from spectrograms. This method has been successfully tested using experimental data from both an acoustic emission (AE) signal simulator, and actual AE sources. The method determines the distance to the signal source with an accuracy from 1 to 10% even when the signal arrives only to one sensor. Keywords: Dispersion curves, spectrogram, extraction, Lamb waves, source location
ISSN:0730-0050