Journal
COMPTES RENDUS MECANIQUE
Volume 331, Issue 12, Pages 811-816Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crme.2003.10.002
Keywords
rupture; thin elastic plates; fracture; oscillatory crack path
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We report a novel mode of quasi-static oscillatory crack propagation when a cutting tip of moderately large width is driven through a thin brittle polymer film. Experiments show that the amplitude and wavelength of the oscillatory crack paths scale linearly with the width of the cutting tip over a wide range of length scales but are independent of the width of the sheet and of the cutting speed. We propose a mechanism for this instability, based on the coupling between crack propagation and out-of-plane deformations of the film. (C) 2003 Academie des sciences. Published by Elsevier SAS. All rights reserved.
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