NDT.net - December 1998, Vol. 3 No. 12

Table of Contents ECNDT '98

Session: Steel Industry

Defect Detection with Rayleigh and Lamb Waves Generated by a Self-Focusing Phased Array

W.A.K. Deutsch, Karl Deutsch, Prüf- und Meßgerätebau, Wuppertal, Germany
A. Cheng, J.D. Achenbach
Center for Quality Engineering and Failure Prevention
Northwestern University, Evanston, IL 60208-3020, USA
Corresponding Author Contact:
W.A.K. Deutsch
Email: info@karldeutsch.de, URL: http://www.karldeutsch.de
TABLE OF CONTENTS
  1. Introduction
  2. Self-Focusing Ultrasonics
  3. Self-Focusing System
  4. Experimental Results for the Self-Focusing of Rayleigh Waves
  5. Modeling of the Surface Displacement Produced by a Single Array Element
  6. Simulated Surface Displacement Generated by the Entire Array
  7. Conclusions
  8. References

I. Introduction

II. Self-Focusing Ultrasonics

III. Self-Focusing System

IV. Experimental Results for the Self-Focusing of Rayleigh Waves

V. Modeling of the Surface Displacement Produced by a Single Array Element

VI. Simulated Surface Displacement Generated by the Entire Array

VII. Conclusions

References

  1. O.T. von Ramm and S.W. Smith, "Beamsteering with Linear Arrays", IEEE Trans. Biomed. Eng., Vol. BME-30, pp. 438-452, 1983.
  2. B. Beardsley, M. Peterson and J.D. Achenbach, "A Simple Scheme for Self- Focusing of an Array", J. Nondestr. Eval, Vol. 14 (4), pp. 169-179, 1995.
  3. W.A.K. Deutsch, A. Cheng and J.D. Achenbach, "Self-Focusing of Rayleigh Waves and Lamb Waves with a Linear Phased Array", Research in NDE, Vol. 9, pp. 81-95, 1997.
  4. W.A.K. Deutsch, A. Cheng and J.D. Achenbach, "Self-Focusing of Rayleigh Waves", Review of Progress in QNDE, D.O. Thompson and D.A. Chimenti, Eds., Plenum Press, New York, Vol. 17, to appear in 1998.
  5. W.A.K. Deutsch, A. Cheng and J.D. Achenbach, "Focusing of Rayleigh Waves: Simulation and Experiments", submitted for publication.
  6. J.D. Achenbach, Wave Propagation in Elastic Solids, North Holland, Amsterdam / New York, p. 194, 1973.
  7. B. Pouet, R.K. Ing, S. Krishnaswamy and D. Royer, "Adaptive Heterodyne Interferometer for Ultrasonic NDE", Review of Progress in QNDE, D.O. Thompson and D.A. Chimenti, Eds., Plenum Press, New York, Vol. 17, to appear in 1998.
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