This paper presents thermal fatigue tests and analysis of thick-walled pipes of 316L and P91 steels at 550°C with different levels of axial load. The evolution of the cracking is measured with X-ray tomography and time-of-flight diffraction. The fatigue life modelling is based on a thermal analysis and elastic-plastic stress analysis plasticity corrected stress intensity factors. Considering the complexity of the loading and crack development the applied engineering model predicts the observed fatigue life quite well.
NILSSON Karl-Fredrik;
DOLCI Francesco;
FISCHER Burkhard;
SELDIS Thomas;
RIPPLINGER Stefan;
2016-01-29
IGCAR
JRC99062
http://www.cf-7.in/pdf/Invited_speakers.pdf,
https://publications.jrc.ec.europa.eu/repository/handle/JRC99062,
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