EFFECT OF CRACK LAYER ON DYNAMIC CRACK-PROPAGATION BEHAVIOR IN POLYSTYRENE

被引：1
|
作者：
PAPADOPOULOS, GA
机构：
[1] Department of Engineering Science, Section of Mechanics, The National Technical University of Athens, Zographou, GR-157 73, Athens, 5, Heroes of Polytechnion Avenue
来源：
JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 08期
关键词：
D O I：
10.1007/BF01117930
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dynamic crack propagation in thin, edge-notched polystyrene specimens was studied by the method of dynamic caustics. During crack propagation, an intensive zone of crazing surrounds and precedes the propagating crack. Therefore, an active zone ahead of the crack tip is developed. This active zone is related to the velocity of crack propagation and the strain rate of loading. The velocity of the crack and the stress intensity factor, K(l), or the energy release rate, G(l), were strongly influenced by the development of the active zone at the crack tip.
引用
收藏
页码：2154 / 2160
页数：7
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