Slow crack growth in polycarbonate films

Details Slow crack growth in polycarbonate films Slow crack growth in polycarbonate films

2007-06-25

arxiv.org/abs/0706.3691v1

Europhysics Letters (EPL) 2, 71 (15/07/2005) 242

Physics

Condensed Matter

Materials Science

Scientific paper

10.1209/epl/i2005-10077-3

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.

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