Local investigations of the thermomecanical behavior of a coarse-grained aluminium multicrystal using constrained DIC and IRT methods

Li Li (1, 2) , Jean-Michel Muracciole (1, 3, 2) , Laurent Waltz (1, 3, 2) , Laurent Sabatier (1, 3, 2) , Bertrand Wattrisse (1, 3, 2)

1 LMGC - Laboratoire de Mécanique et Génie Civil
2 ThM2 - ThermoMécanique des Matériaux
3 MIST - Laboratoire de micromécanique et intégrité des structures

With the intention of achieving grain scale energy balances at finite strain, a mechanical test on a coarse-grained aluminium is presented in this paper using two complementary imaging techniques (visible and infrared). Specific image processing methods (Constrained DIC and Constrained IRT) are applied to investigate the thermomechanical behavior at the microstructural scale. In the long term, the ultimate goal is to provide energy balance during mechanically-loaded test at the granular scale in order to propose thermomechanically consistent constitutive modelling of crystalline plasticity.

Domaines: Mécanique des solides [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Thermique [physics.class-ph]; Traitement du signal et de l'image [eess.SP]; Optique / photonique

Li Li, Jean-Michel Muracciole, Laurent Waltz, Laurent Sabatier, Bertrand Wattrisse. Local investigations of the thermomecanical behavior of a coarse-grained aluminium multicrystal using constrained DIC and IRT methods. Photomechanics 2015, May 2015, Delft, Netherlands. ⟨hal-01175891⟩