Biaxial tension on polymer in thermoforming range

Simon Becker (1) , Christelle Combeaud (1) , Francis Fournier (1) , J. Rodriguez (1) , Noëlle Billon (1)

1 CEMEF - Centre de Mise en Forme des Matériaux

This paper presents an experimental characterization of mechanical properties of a polyethylene terephtalate (PET) resin classically used in stretch blow moulding process. We have applied on such a material a well established experimental protocol at CEMEF, including new and relevant biaxial tensile tests. The experimental set-up relative to biaxial tension will be presented and described in a first part of the paper. Furthermore, we will focus on the experimental DMTA preliminary tests which are required to estimate the resin sensibility to temperature and strain rate in linear viscoelasticity domain. Finally, we will be interested in the material large strain behaviour: biaxial tensile results are presented and discussed. Finally, such an experimental approach should allow a relevant modelling of polymer physics and mechanics; this point will not be discussed here because of a lack of time.

Mots clés: Biaxial tension; polymer; thermoforming

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

Simon Becker, Christelle Combeaud, Francis Fournier, J. Rodriguez, Noëlle Billon. Biaxial tension on polymer in thermoforming range. 14th International Conference on Experimental Mechanics (ICEM 14), Jul 2010, Poitiers, France. Article Number 25003 - 8 p., ⟨10.1051/epjconf/20100625003⟩. ⟨hal-00579501⟩