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An Interactive CAD Environment for Ultrasonic Evaluation of Welded Joints

Fairouz Bettayeb, Amar Benchaala
Scientific Research Center on Welding And Non Destructive Testing,
C.S.C, Route de Dely Brahim, BP: 64, Chéraga, Algiers.
Tel/fax: (213-2) 361850.Email: bettayeb@excite.com, f_bettayeb@email.com
Mohammed Kassel, Karim Hamzi
University of Science and Technology USTHB, BP:32, El Alia, Algiers.
Contact

Abstract

1. Introduction

2. Ultrasonic waves characteristics

3. Basic ultrasonic inspection methods

4. General algorithm

  1. After performing FFT on the A-scan data, frequency domain feature analysis is done.
  2. The domain is scattered into a number of finite elements.
  3. The displacement values interior the element are expressed in terms of their nodal values.
  4. The nodal values are determined by minimizing the potential energy.
  5. A system of matrix equations of second order in time is then obtained:

5. Usndt2000: a procedure for ultrasonic inspection modeling.

6. Conclusion

References.

  1. Iso (1982). Classification des défauts dans les soudures par fusion des métaux, avec commentaires explicatifs. 1ere édition. Paris.
  2. Eurotest, (1985). Collection of references radiographs of but welds in steel. International institute of welding (Ed.). Brussels.
  3. Nockeman, C., Fortunko, C. (1997). In: Proceedings of conclusions of the workshop European-American workshop determination of reliability and validation method of NDE. Germany proceedings (Ed.). Berlin.
  4. You, C.P., Knott, J.F. (1986), Engineering fracture mechanics, Vol.24, N°2, pp.291-305, Elsevier (ed.), New York.
  5. Nichols, R.W. (1982). Advances in non destructive examination for structural integrity. Elsevier science publishing co., Inc. New York.
  6. Krautkramer (1998). A database CD: The new world of krautkramer sounds round the globe. Krautkramer GmbH & CO (Ed.). Germany.
  7. Bettayeb, F., Alem, K, Maamache, B. (1998). In: Proceedings of the 7th European conference on non destructive testing: Ndt at work. Vol. 2, pp.1258-1265, force institute (Ed.). Copenhagen.
  8. Paradis, L. (1983). Doctor Engineer Thesis , ENPG, Grenoble, France.
  9. Pelletier, J.L (1984). La pratique du contrôle industriel par ultrasons. Tomes I & II, ENSAM (Ed.), Paris.
  10. Bettayeb, F. & al. (1997). In: Proceeding of the 2nd Convention for non destructive testing: Ndt to improve quality, reliability and productivity. pp. 179-185, Saint & Gerstel graphics (Eds), South Africa.

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