Creep of a Fracture Line in Paper Peeling

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2007
Major/Subject
Mcode
Degree programme
Language
en
Pages
145504/1-4
Series
Physical Review Letters, Volume 99, Issue 14
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
Keywords
paper, fracture lines
Other note
Citation
Koivisto, J. & Rosti, J. & Alava, Mikko J. 2007. Creep of a Fracture Line in Paper Peeling. Physical Review Letters. Volume 99, Issue 14. 145504/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.99.145504.