Creep of a fracture line in paper peeling
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Physical Review Letters, Volume 99, issue 14, pp. 1-4
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∼1.8±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.Description
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Koivisto, J, Rosti, J & Alava, M J 2007, 'Creep of a fracture line in paper peeling', Physical Review Letters, vol. 99, no. 14, 145504, pp. 1-4. https://doi.org/10.1103/PhysRevLett.99.145504