Volume changes in a filled elastomer studied via digital image correlation

Jordan de Crevoisier (1) , Gilles Besnard (1) , Yannick Merckel (2) , Huan Zhang (3) , Julien Caillard (4) , Fabien Vion-Loisel (4) , Daniel Berghezan (4) , Costantino Creton (3) , Julie Diani (5) , Mathias Brieu (2) , François Hild (1) , Stéphane Roux (1)

1 LMT - Laboratoire de Mécanique et Technologie
2 LML - Laboratoire de Mécanique de Lille - FRE 3723
3 PPMD - Laboratoire de Physico-Chimie des Polymères et des Milieux Dispersés
4 Centre de Technologie de Ladoux
5 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux

Volumetric strains in a filled SBR specimen subjected to cyclic uniaxial tension with increasing extensions are studied. Digital image correlation is used to follow the kinematics of two orthogonal free faces. A volume expansion is observed past a critical elongation, which can be interpreted as the onset of cavitation. Under unloading, the volume returns to its original value and remains constant upon reloading. Increasing the elongation to higher values than the previous cycle leads again to a volumetric expansion.

Mots clés: Elastomer; compressibility; cavitation; DIC; damage

Domaines: Intelligence artificielle [cs.AI]; Matériaux

Jordan de Crevoisier, Gilles Besnard, Yannick Merckel, Huan Zhang, Julien Caillard, et al.. Volume changes in a filled elastomer studied via digital image correlation. Polymer Testing, 2012, 31, p. 663-670. ⟨10.1016/j.polymertesting.2012.04.003⟩. ⟨hal-00749122⟩