Creep of a fracture line in paper peeling

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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.
Original languageEnglish
Article number145504
Pages (from-to)1-4
JournalPhysical Review Letters
Issue number14
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed


  • fracture

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