A dynamical law for slow crack growth in polycarbonate films

Details A dynamical law for slow crack growth in polycarbonate films A dynamical law for slow crack growth in polycarbonate films

2007-06-24

arxiv.org/abs/0706.3522v1

Physics

Classical Physics

Scientific paper

10.1103/PhysRevLett.99.205502

We study experimentally the slow growth of a single crack in polycarbonate films submitted to uniaxial and constant imposed stress. For this visco-plastic material, we uncover a dynamical law that describes the dependence of the instantaneous crack velocity with experimental parameters. The law involves a Dugdale-Barenblatt static description of crack tip plastic zones associated to an Eyring's law and an empirical dependence with the crack length that may come from a residual elastic field.

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