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Creep of a fracture line in paper peeling

J. Koivisto·J. Rosti·M. J. Alava
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Abstract

The slow motion of a crack line is studied via an experiment in which sheets of paper are split into two halves in a ``peel-in-nip'' (PIN) geometry under a constant load, in creep. The velocity-force relation is exponential. The dynamics of the fracture line exhibits intermittency, or avalanches, which are studied using acoustic emission. The energy statistics is a power-law, with the exponent $β\sim 1.8 \pm 0.1$. Both the waiting times between subsequent events and the displacement of the fracture line imply complicated stick-slip dynamics. We discuss the correspondence to tensile PIN tests and other similar experiments on in-plane fracture and the theory of creep for elastic manifolds.

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BibTeXRIS

J. Koivisto, J. Rosti, M. J. Alava. 2007-01-23. Creep of a fracture line in paper peeling. https://doi.org/10.1103/physrevlett.99.145504

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