Abstract : The unterstanding and the local quantification of surface strain distribution is a key element of crack initiation analysis. Experiments following up the local strain distribution have been carried out, based on the construction of several hundred micrometers wide strain maps ; and using gratings of regularly spaced micrometric markers deposited by lithography. The strain maps are computed using a specific routine, allowing to quantify the local strain distribution at the grain scale for different interrupted tensile loads.
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Damien Colas, E. Finot, Sylvain Flouriot, Samuel Forest, Fréderic Herbst, et al.. Strain field measurements in polycrystalline tantalum. 21ème Congrès Français de Mécanique, CFM 2013, Aug 2013, Bordeaux, France. 6 p. ⟨hal-00941048⟩