Slow crack growth in polycarbonate films

Pierre-Philippe Cortet; Stéphane Santucci; Loïc Vanel; Sergio Ciliberto

Slow crack growth in polycarbonate films

Pierre-Philippe Cortet ¹ Stéphane Santucci ¹ Loïc Vanel ¹ Sergio Ciliberto ¹

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. The specificity of fracture in polycarbonate films is the appearance of flame shaped macroscopic process zones at the tips of the crack. Supported by an experimental study of the mechanical properties of polycarbonate films, an analysis of the stress dependence of the mean ratio between the process zone and crack lengths, during the crack growth, show a quantitative agreement with the Dugdale-Barenblatt model of the plastic process zone. We find that the fracture growth curves obey strong scaling properties that lead to a well defined growth master curve.

Keywords : Fracture Slow crack growth Plasticity

Document type :

Journal articles

Domain :

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

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

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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00156838
Contributor : Loïc Vanel <>
Submitted on : Friday, June 22, 2007 - 5:43:43 PM
Last modification on : Wednesday, September 11, 2019 - 11:20:05 AM
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Slow crack growth in polycarbonate films

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