Mechanics & Industry
Volume 20, Number 6, 2019
|Number of page(s)||8|
|Published online||02 December 2019|
PWR effect on crack initiation under equi-biaxial loading development of the experiment
DEN-Service d'Etudes Mécaniques et Thermiques (semt), CEA, University of Paris-Saclay, 91191 Gif-sur-Yvette, France
2 EDF, R&D, Site de Saclay, 91290 Palaiseau Cedex, France
3 EDF, R&D, Site des Renardières, 77818 Moret sur Loing Cedex, France
4 IMSIA, UMR 9219, CNRS, CEA, EDF, University Of Paris-Saclay, 91762 Palaiseau, Cedex, France
* e-mail: firstname.lastname@example.org
Accepted: 25 September 2019
The lifetime extension of the nuclear power stations is considered as an energy challenge worldwide. That is why, the risk analysis and the study of various effects of different factors that could potentially represent a hazard to a safe long term operation are necessary. The methodology for fatigue dimensions of the Pressurized Water Reactor components (PWR) is based on the use of design curves established from test carried out in air at 20 °C on smooth specimens by integrating safety coefficient that covers the dispersion of tests associated with the effects of structures. To formally integrate these effects, some international codes have already proposed and suggested a modification of the austenitic stainless steels fatigue curve combined with a calculation of an environmental penalty factor, namely Fen, which has to be multiplied by the usual fatigue usage factor. The aim of this paper is to present a new device “FABIME2E” developed in the CEA-LISN in collaboration with EDF and AREVA. These new tests allow quantifying accurately the effect of PWR environment on semi-structure specimen. This new device combines the structural effect like equi-biaxiality and mean strain and the environmental penalty effect with the use of PWR environment during the fatigue tests.
Key words: Multiaxial fatigue / PWR environment effect / austenitic stainless steel
© C. Gourdin et al., published by EDP Sciences 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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