| Issue |
Europhys. Lett.
Volume 38, Number 8, June II 1997
|
|
|---|---|---|
| Page(s) | 589 - 594 | |
| Section | Condensed matter: structure, thermal and mechanical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00288-6 | |
| Published online | 01 September 2002 | |
Phase transition in a spring-block model of surface fracture
1
Institute of Physics, Academia Sinica - Taipei, Taiwan 11529, ROC
2
Department of Mathematics, Imperial College, Huxley Building, 180 Queen's Gate, London SW7 2BZ, UK
Received:
4
November
1996
Accepted:
6
May
1997
A simple and robust spring-block model obeying threshold dynamics is introduced to study surface fracture of an overlayer subject to stress induced by adhesion to a substrate. We find a novel phase transition in the crack morphology and fragment-size statistics when the strain and the substrate coupling are varied. Across the transition, the cracks display in succession short-range, power law and long-range correlations. The study of stress release prior to cracking yields useful information on the cracking process.
PACS: 64.60.-i – General studies of phase transitions / 81.40.Np – Fatigue, corrosion fatigue, embrittlement, cracking, fracture and failure / 64.60.Lx – Self-organized criticality; avalanche effect
© EDP Sciences, 1997
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