A dynamical law for slow crack growth in polycarbonate films

Pierre-Philippe Cortet; Loïc Vanel; Sergio Ciliberto; Loic Vanel; Loı¨cloı¨c Vanel

A dynamical law for slow crack growth in polycarbonate films

Pierre-Philippe Cortet ¹ Loïc Vanel ¹ Sergio Ciliberto ¹ Loic Vanel ¹ Loı¨cloı¨c Vanel

1 Phys-ENS - Laboratoire de Physique de l'ENS Lyon

Abstract : 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.

Keywords : Viscoplasticity Fracture

Document type :

Journal articles

Domain :

Physics [physics] / Mechanics [physics] / Mechanics of materials [physics.class-ph]

Physics [physics] / Condensed Matter [cond-mat] / Materials Science [cond-mat.mtrl-sci]

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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00156750
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Submitted on : Friday, March 23, 2018 - 11:08:12 AM
Last modification on : Wednesday, September 11, 2019 - 11:20:05 AM

CortetPRL2007.pdf

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A dynamical law for slow crack growth in polycarbonate films

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