Numerical investigation by finite element simulations of the ball punch test: Application to tempered martensitic steels

The effects of the post-yield behaviour on the shape of small ball punch test (SBPT) curves were investigated with finite element simulations from which the load-deflection curves were extracted. We have shown the general yield load defined on the ball punch curves depends on the post-yield behaviour and that the usual linear calibration between the yield load and the yield stress may lead to erroneous estimations of the irradiation-hardening. A new calibration procedure has been proposed to determine the yield stress from a ball punch curve that makes use of empirical parameters that minimizes the effects of the post-yield behaviour which influence the overall shape of the ball punch test from the very beginning of the tests.


Published in:
Journal of Nuclear Materials, Proceedings of the 13th International Conference on Fusion Reactor Materials, 386-388, 319-322
Presented at:
13th International Conference on Fusion Reactor Materials, Nice, France, December 10-14, 2007
Year:
2009
Publisher:
The Netherlands, Elsevier
Keywords:
Laboratories:
SPC
CRPP




 Record created 2010-04-09, last modified 2018-01-28


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