Slow crack growth in polycarbonate films

被引：10

作者：

Cortet, PP ^{[1
]}

Santucci, S ^{[1
]}

Vanel, L ^{[1
]}

Ciliberto, S ^{[1
]}

机构：

[1] Ecole Normale Super Lyon, Phys Lab, CNRS, UMR 5672, F-69364 Lyon, France

来源：

EUROPHYSICS LETTERS | 2005年 / 71卷 / 02期

关键词：

D O I：

10.1209/epl/i2005-10077-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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, shows 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.

引用

页码：242 / 248

页数：7

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