Volume 73, Number 1, January 2006
|Page(s)||55 - 61|
|Section||Condensed matter: structural, mechanical and thermal properties|
|Published online||30 November 2005|
Crackling noise in paper peeling
Helsinki University of Technology, Laboratory of Physics P.O. Box 1100, FIN-02015 HUT, Finland
2 SMC-INFM, Dipartimento di Fisica, Università “La Sapienza” P.le A. Moro 2, 00185 Roma, Italy
3 Finnish Pulp and Paper Research Institute P.O. Box 51, FIN-02151 Espoo, Finland
Accepted: 3 November 2005
Acoustic emission or crackling noise is measured from an experiment on splitting or peeling of paper. The energy of the events follows a power law, with an exponent . The event intervals have a wide range, but superposed on scale-free statistics there is a time scale, related to the typical spatial scale of the microstructure (a bond between two fibers). Since the peeling takes place via steady-state crack propagation, correlations can be studied with ease and shown to exist in the series of acoustic events.
PACS: 62.20.Mk – Fatigue, brittleness, fracture, and cracks / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 81.40.Np – Fatigue, corrosion fatigue, embrittlement, cracking, fracture and failure
© EDP Sciences, 2005
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