EPJ Web of Conferences
Volume 6, 2010ICEM 14 – 14th International Conference on Experimental Mechanics
|Number of page(s)||8|
|Published online||10 June 2010|
DIC-aided biaxial fatigue tests of a 304L steel
CEA Saclay, DEN, SRMA, 91191
2 LMT Cachan, 61 av. du Président Wilson, 94230 Cachan, France
3 EDF R&D / MMC, Avenue des renardières – Ecuelles, 77818 Moret Sur Loing, France
4 AREVA NP SAS, Tour AREVA, 92084 Paris La Défense, France
a e-mail : firstname.lastname@example.org
Several biaxial fatigue tests are conducted up to 106 cycles at room temperature in the context of a collaboration LMT-Cachan / EDF / AREVA / SNECMA / CEA. Malteses cross specimens of 304L steel, designed to initiate crack in the bulk, are loaded by a triaxial testing machine. A Digital Image Correlation technique is used to measure strain during loading and detect crack initiation early. A special optical assembly and a stroboscopic sampling method are set up in this purpose. Several types of loadings are performed: equibiaxial with a loading ratio R = 0.1, equibiaxial with loading ratio R = –1, pseudo uniaxial (cyclic loading at R= 0.1 in one direction and constant loading in the other). First results are commented.
© Owned by the authors, published by EDP Sciences, 2010
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