Strain field measurements in polycrystalline tantalum

Damien Colas (1, 2, 3) , E. Finot (2) , Sylvain Flouriot (3) , Samuel Forest (1) , Fréderic Herbst (2) , Y. Lacroute (2) , Matthieu Mazière (1) , T. Paris (3)

1 MAT - Centre des Matériaux
2 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne
3 DAM/VALDUC - VALDUC

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.

Mots clés: Crack Initiation; Strain Distribution; Lithography

Domaines: Sciences de l'ingénieur [physics]; Matériaux

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⟩