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Identification and Analysis of Acoustic Emission Signals by Cohen's Class of Time Frequency Distribution

Luboš Pazdera, Jaroslav Smutný
Department of Physics and Department of Railway Construction and Structures, Faculty of Civil Engineering, Technical University of Brno, Czech Republic
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Abstract

Introduction

Cohen's class of time frequency distribution

Using of the Cohen's class of time frequency distribution to the practical analysis

Analysis of experiment

Conclusions

Acknowledgement

This research has been supported by the research project CEZ J22/98 No.~261100007 ("Theory, reliability and mechanism of failure statically and dynamically loaded building construction") and by Grant Agency of Czech Republic No~103/97/P140 "Study, Analysis and Evaluation of Acoustic Emission Signals Applied on Thin-Wall Systems".

Literature

  1. Cohen L.: Time-frequency distributions - a review, Proc. IEEE, vol. 77, no. 7, pp. 941-981, July 1989
  2. O'Neill J.C.: Quadratic Functions for Time-Frequency Analysis with Applications to Signal Adaptive Kernel Design, SPIE - Advanced Signal Processing Algorithms, 1997
  3. O'Neill J.C., Williams W.J.: Distributions in the Discrete Cohen Classes, Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP, vol. 3, pp. 1581-1584, 12-15 May 1998, Seattle, WA
  4. Smutny J.: Analysis of Vibration since Rail Transport by using Wigner-Ville Transform, TRANSCOM 99 - 3-rd European Conference of Young Research and Science Workers in Transport and Telecommunications, Zilina, June 1999, Slovak Republic, pp. 101-104, ISBN 80-7100-616-5

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