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Advances in ultrasonic testing of austenitic stainless steel welds. Towards a 3D description of the material including attenuation and optimisation by inversion

  • J. MoysanEmail author
  • C. Gueudré
  • M. -A. Ploix
  • G. Corneloup
  • Ph. Guy
  • R. El Guerjouma
  • B. Chassignole
Part of the Springer Proceedings in Physics book series (SPPHY, volume 128)

Abstract

In the case of multi-pass welds, the material is very difficult to describe due to its anisotropic and heterogeneous properties. Anisotropy results from the metal solidification and is correlated with the grain orientation. A precise description of the material is one of the key points to obtain reliable results with wave propagation codes. A first advance is the model MINA which predicts the grain orientations in multi-pass 316-L steel welds. For flat position welding, good predictions of the grains orientations were obtained using 2D modelling. In case of welding in position the resulting grain structure may be 3D oriented. We indicate how the MINA model can be improved for 3D description. A second advance is a good quantification of the attenuation. Precise measurements are obtained using plane waves angular spectrum method together with the computation of the transmission coefficients for triclinic material. With these two first advances, the third one is now possible: developing an inverse method to obtain the material description through ultrasonic measurements at different positions.

Keywords

Weld Pool Grain Orientation Ultrasonic Testing Mina Model Ultrasonic Beam 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • J. Moysan
    • 1
    Email author
  • C. Gueudré
    • 1
  • M. -A. Ploix
    • 1
  • G. Corneloup
    • 1
  • Ph. Guy
    • 2
  • R. El Guerjouma
    • 3
  • B. Chassignole
    • 4
  1. 1.LCNDUniversité de la Méditerranée, Av. G. BergerAix en ProvenceFrance
  2. 2.MATEIS, INSA LyonVilleurbanneFrance
  3. 3.LAUM, Avenue Olivier MessiaenLe Mans Cedex 9France
  4. 4.Département MMC, EDF R&D, Site des RenardièresMoret-sur-LoingFrance

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