Volume 101, Number 1, January 2013
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||14 January 2013|
Slow crack propagation through a disordered medium: Critical transition and dissipation
1 CNR - Istituto dei Sistemi Complessi - via del Fosso del Cavaliere 100, 00133 Roma, Italy, EU
2 CNR - Istituto dei Sistemi Complessi, Dipartimento di Fisica, Sapienza Università, P.le A. Moro 5, 00189 Roma, Italy, EU
3 Dipartimento di Fisica, Sapienza Università - P.le A. Moro 5, 00189 Roma, Italy, EU
Received: 24 October 2012
Accepted: 9 December 2012
We show that the intermittent and self-similar fluctuations displayed by a slow crack during the propagation in a heterogeneous medium can be quantitatively described by an extension of a classical statistical model for fracture. The model yields the correct dynamical and morphological scaling, and allows to demonstrate that the scale invariance originates from the presence of a non-equilibrium, reversible, critical transition which, in the presence of dissipation, gives rise to self-organized critical behaviour.
PACS: 64.60.av – Cracks, sandpiles, avalanches, and earthquakes / 62.20.mt – Cracks
© EPLA, 2013
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