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Updated: Jun 25, 2026

A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation

A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation

Published on: June 28, 2015

Fracture phase separation.

Takehito Koyama¹, Takeaki Araki, Hajime Tanaka

¹Institute of Industrial Science, University of Tokyo, Meguro-ku, Tokyo 153-8505, Japan.

Physical Review Letters

|March 5, 2009

Summary

Mechanical fracture drives phase separation in polymer solutions, a phenomenon termed "fracture phase separation." This process mirrors material fracture transitions, suggesting a universal mechanism for how stress influences material inhomogeneization.

Area of Science:

Materials Science
Polymer Physics
Physical Chemistry

Background:

Phase separation is a fundamental process in materials science, typically driven by thermodynamic factors.
Mechanical stress is known to influence material properties and can lead to fracture.
The interplay between mechanical deformation and phase separation in polymer solutions has not been fully elucidated.

Purpose of the Study:

To investigate novel phase-separation behavior associated with mechanical fracture in polymer solutions.
To understand the role of mechanical fracture as a coarsening process in phase separation.
To explore the relationship between fracture phase separation and the ductile-to-brittle transition in material fracture.

Main Methods:

Observation of phase separation in polymer solutions under mechanical stress.

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Analysis of the transition from viscoelastic behavior to fracture-induced phase separation.

Comparison of fracture phase separation with external mechanical fracture of materials.

Main Results:

A novel phenomenon termed 'fracture phase separation' was observed in polymer solutions.
Mechanical fracture was identified as a dominant coarsening mechanism during phase separation.
The transition to fracture phase separation correlates with the ductile-to-brittle transition observed in material fracture under shear.

Conclusions:

Mechanical fracture can act as a primary driver for phase separation in polymer solutions.
Fracture phase separation and material fracture share analogous physical principles, differing only in the origin of deformation (internal vs. external).
This suggests a general physical framework for mechanical selection of kinetic pathways in the inhomogeneization of stressed materials.