NDT.net - March 2003, Vol. 8 No.3

Realistic Cracks for In-Service Inspection Qualification Mock-Ups

Mika Kemppainen, Iikka Virkkunen
(Trueflaw Ltd., P.O.Box 540, FIN-02151 Espoo, Finland)
(mika.kemppainen@trueflaw.com, iikka.virkkunen@trueflaw.com)
Jorma Pitkänen (VTT Manufacturing Technology)(jorma.pitkanen@vtt.fi)
Raimo Paussu (Fortum Nuclear Services Ltd)(raimo.paussu@fortum.com)
Hannu Hänninen (Helsinki Univ. of Technology) (hannu.hanninen@hut.fi)
Paper presented at the 8th ECNDT, Barcelona, June 2002

Abstract

Introduction

Experimental

Microscopy

Non-destructive testing

Residual stress

Real components

Pipes

T-joint of two pipes

Collector head

Discussion

Conclusions

Acknowledgements

References

  1. Virkkunen, I., "Thermal Fatigue of Austenitic and Duplex Stainless Steels", Acta Polytechnica Scandinavica, Mechanical Engineering Series No. 154, Espoo, 2001, 115 p. (http://lib.hut.fi/Diss/2001/isbn9512256878/)
  2. Virkkunen, I., Kemppainen, M. and Hänninen, H., "Residual Stresses Induced by Cyclic Thermal Loads". The Sixth International Conference on Residual Stresses ICRS- 6, Oxford, UK, 10-12 July 2000, pp. 529-536.
  3. Hänninen, H. and Hakala, J., "Pipe Failure Caused by Thermal Loading in BWR Water Conditions", International Journal of Pressure Vessel & Piping, 1981, 9, pp. 445-455.

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