Fracture properties of graphite materials and analysis of crack growth under bending conditions

被引：0
作者：
E. V. Lomakin
M. P. Tretyakov
机构：
[1] Lomonosov Moscow State University,Department of Mechanics and Mathematics
[2] Perm National Research Polytechnic University,Center of Experimental Mechanics
来源：
Meccanica | 2016年 / 51卷
关键词：
Structural graphite materials; Elastic properties; Strength; Fracture toughness; Stable crack growth; Unstable crack growth;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The elastic and strength properties of different grades of graphite materials as well as their fracture toughness properties are studied. The method for the determination of crack length and the values of fracture toughness characteristics of materials during stable equilibrium crack growth under bending conditions is considered. The unstable or non-equilibrium crack growth from short initial crack is observed in experiments, and corresponding theoretical explanation is given. The process of unstable crack growth is analyzed for different loading conditions. It has been shown that in the cases of short cracks, some part of stored energy transforms into kinetic energy, which can be described by the equation of energy balance during unstable crack growth.
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页码：2353 / 2364
页数：11
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