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Updated: Aug 14, 2026
09:12
A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation
Published on: June 28, 2015
Nonuniversality in microbranching instabilities in rapid fracture
Eran Bouchbinder1, Itamar Procaccia
1Department of Chemical Physics, The Weizmann Institute of Science, Rehovot 76100, Israel.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 31, 2005
Summary
Microbranching instabilities in brittle materials show varying physics. Pattern characteristics depend on material properties, differing significantly between plastics like PMMA and glass.
Area of Science:
- Materials Science
- Physics
- Polymer Science
Background:
- Microbranching instabilities in brittle materials were thought to exhibit universal postinstability physics.
- Previous research often assumed common scaling laws across diverse materials.
Purpose of the Study:
- To challenge the universality of postinstability physics in microbranching.
- To propose a material-dependent scaling theory for pattern characteristics.
- To differentiate the physics governing patterns in plastics versus glass.
Main Methods:
- Development of a scaling theory linking pattern characteristics to material properties.
- Comparative analysis of postinstability patterns in brittle plastics (PMMA) and glass.
- Theoretical modeling focusing on material-specific dynamics.
Main Results:
- The physics governing length and time scales of postinstability patterns varies significantly between materials.
- A scaling theory successfully connects pattern characteristics to material properties like molecular weight in PMMA.
- Three-dimensional dynamics critically influence patterns in glass, distinguishing them from plastics.
Conclusions:
- The postinstability physics of microbranching is not universal and is strongly material-dependent.
- Existing ab initio theoretical models require refinement to incorporate fundamental physics of these phenomena.
- Understanding material-specific properties is crucial for accurate modeling of brittle fracture patterns.
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