Strain Field Measurement on 3D Surfaces

Luc Chevalier (1) , Yun Mei Luo (1) , E. Monteiro (1)

1 MSME - Laboratoire de Modélisation et Simulation Multi Echelle

The main goal of this paper is to provide an identification tool for the orthotropic elastic properties in the 3D regions of PET bottles. We focus on the behavior of the petaloid bases when bottles are submitted to an internal pressure. A stereo correlation software has been developed to evaluate the membrane strains. Two bases named VS (small valley) and VL (large valley), which highlight different behavior at the ESC (environmental stress cracking) test, are compared with this tool. Coupled with a finite element simulation managed on the same bases, these results allow the identification of the induced mechanical properties.

Mots clés: Stereo Correlation; Strain Field Measurement; Polyethylene Terephthalate Bottles; Petaloid Base; Identification by Coupled Experimental-Calculation

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

Luc Chevalier, Yun Mei Luo, E. Monteiro. Strain Field Measurement on 3D Surfaces. International Journal of Material Forming, 2010, 3 (1), pp.611-614. ⟨10.1007/s12289-010-0844-7⟩. ⟨hal-00773138⟩