DocumentCode
1157712
Title
Matching pursuit-based signal processing method to improve ultrasonic flaw detection in NDT applications
Author
Ruiz, N. ; Vera, P. ; Curpián, J. ; Martínez, D. ; Mata, R.
Author_Institution
Departamento de Electronica, Univ. de Jaen, Linares Jaen, Spain
Volume
39
Issue
4
fYear
2003
fDate
2/20/2003 12:00:00 AM
Firstpage
413
Lastpage
414
Abstract
A novel matching pursuit-based signal processing method is proposed to improve ultrasonic flaw detection in non-destructive testing (NDT) applications. The method utilises time-shifted Morlet functions as dictionary elements, since they are well matched with the ultrasonic pulse echoes obtained from the transducer used in the experiments. It is fast enough to be used in the signal processing stage of real-time inspection systems. Experimental results show meaningful SNR improvements for low input SNR´s (below 0 dB).
Keywords
acoustic signal processing; flaw detection; inspection; iterative methods; real-time systems; ultrasonic materials testing; NDT applications; SNR improvements; US flaw detection; dictionary elements; iterative algorithm; matching pursuit-based signal processing method; nondestructive testing; real-time inspection systems; time-shifted Morlet functions; ultrasonic flaw detection; ultrasonic pulse echoes;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20030262
Filename
1184101
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