Elastic behavior of anisotropic terra cotta ceramics determined by kinematic full-field measurements

Vincent Huon (1) , Bertrand Wattrisse (1) , Moulay Saïd El Youssoufi (1) , Andre Chrysochoos (2, 1)

1 LMGC - Laboratoire de Mécanique et Génie Civil
2 ThM2 - ThermoMécanique des Matériaux

The anisotropic behavior of terra cotta ceramics is due to the lamellate structure of clay and to the extrusion forming process. In the case of low strains, this behavior is elastic. Digital image correlation was used to give strain field measurements. These measurements allowed to locally characterize transverse isotropic elastic behavior. The consistency of the local characterization procedure is showed by comparing kinematic field measurements on small specimens with fields obtained by 3D finite element Computations.

Mots clés: extrusion; mechanical properties; traditional ceramics; structural applications; terra cotta; digital image correlation; localization

Domaines: Mécanique des matériaux [physics.class-ph]

Vincent Huon, Bertrand Wattrisse, Moulay Saïd El Youssoufi, Andre Chrysochoos. Elastic behavior of anisotropic terra cotta ceramics determined by kinematic full-field measurements. Journal of the European Ceramic Society, 2007, 27 (5), pp.2303-2310. ⟨10.1016/j.jeurceramsoc.2006.08.013⟩. ⟨hal-00572427⟩