Residual stress in carbon fiber embedded in epoxy, studied by simultaneous measurement of applied stress and electrical resistance

被引：0

作者：

Wang, XJ ^{[1
]}

Chung, DDL ^{[1
]}

机构：

[1] SUNY Buffalo, Composite Mat Res Lab, Buffalo, NY 14260 USA

来源：

COMPOSITE INTERFACES | 1998年 / 5卷 / 03期

关键词：

residual stress; carbon fiber; polymer; epoxy; electrical resistance; resistivity;

D O I：

暂无

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Due to the thermal contraction of the epoxy embedding a carbon fiber after curing, the fiber exhibited a compressive residual stress which caused the electrical resistivity of the fiber to increase by 10%. Subsequent application of tension to the exposed ends of the embedded fiber reduced the residual stress, thereby causing the resistivity to decrease reversibly back to its value prior to embedding. The tensile stress (1320 MPa) required for this to happen was the residual stress in the fiber direction. Excessive tensile stress caused the resistivity to increase, due to fiber damage.

引用

页码：277 / 281

页数：5