Micro-scale full-field strain measurement on a stainless steel sample elasto-plastically tested
Communication avec acte
This study deals with the characterisation of the mechanical behaviour of an austenitic stainless steel at the micrometric scale in its elasto-plastic domain. For that, the full-field “grid method”, adapted to this scale, is implementeded. The images of the grating are recorded thanks to a white-light interferometric microscope. The results show that the strain localization is in accordance with the microstructure. Some considerations about the average strain within different grains of the steel sample are made to show how the plastic deformation begins locally before the global yield point.
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Communication avec acteMOULART, Raphaël; ROTINAT, René (2013)This study deals with the characterisation of the mechanical behaviour of an austenitic stainless steel (316L) at the micrometric scale in its elasto-plastic domain. For that, the full-field “grid method”, adapted to this ...
Article dans une revue avec comité de lectureMOULART, Raphaël; ROTINAT, René; PIERRON, Fabrice (Elsevier, 2009)This work deals with the study of the local onset of microplasticity in a steel specimen under tensile test through the use of a full-field strain measurement method at the micrometric scale. The kinematic measurements ...
Article dans une revue avec comité de lectureMOULART, Raphaël; ROTINAT, René (IOP Publishing, 2014)This work is aimed at exploring the performances of an alternative procedure to smooth and differentiate full-field displacement measurements. After recalling the strategies currently used by the experimental mechanics ...
Communication avec acteROTINAT, René; MOULART, Raphaël; NUNIO, François; VEDRINE, Pierre (ISEM 2015, 2015)This study deals with of the experimental methodology developed in order to identify the elastic properties of superconducting ring-shaped windings. Mechanical tensile tests were conducted on specimens associated to a ...
Communication avec acteMOULART, Raphaël; ROTINAT, René (SEM 2015, 2015)This work proposes an alternative procedure to smooth and differentiate experimental full-field displacement measurements to get strain fields. This one, the penalized least squares method, relies on the balance between ...