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Volume changes in a filled elastomer studied via digital image correlation

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2012
auteur(s) De Crevoisier Jordan; Besnard Gilles; Merckel Yannick; Zhang Huan; Vion-Loisel Fabien; Caillard Julien; Berghezan Daniel; Creton Costantino; Diani Julie; Brieu Mathias; Hild François; Roux Stéphane
journal (abréviation) Polymer Testing (Polymer Test)
volume (numéro) 31
  
pages 663 – 670
résumé 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
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