ASYMMETRIC SHIELDING IN INTERFACIAL FRACTURE UNDER INPLANE SHEAR

被引:215
作者
LIECHTI, KM
CHAI, YS
机构
[1] Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX
来源
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME | 1992年 / 59卷 / 02期
关键词
D O I
10.1115/1.2899520
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The toughness of a glass/epoxy interface was measured over a wide range of mode mixes. A toughening effect was associated with increasing positive and negative in-plane shear components. Optical interference measurements of normal crack opening displacements near the crack front and complementary finite element analyses were used to examine near-front behavior during crack initiation. Estimates of the toughening based on plastic dissipation, bulk viscoelastic dissipation, and interface asperity shielding did not fully account for the measured values. The results suggest that the inelastic behavior of the epoxy, frictional, and, perhaps, three-dimensional effects should be considered.
引用
收藏
页码:295 / 304
页数:10
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