Damage dissipation and localization during fatigue in unidirectional glass/carbon fibre hybrid composites

被引：0

作者：

Gamstedt, EK ^{[1
]}

Brondsted, P ^{[1
]}

机构：

[1] Riso Natl Lab, Mat Res Dept, DK-4000 Roskilde, Denmark

来源：

FATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4 | 1999年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The fatigue behaviour of a unidirectional 0 degrees carbon/glass fibre hybrid composite has been investigated. The dissipation was measured by the stiffness, loss angle and temperature field of the specimen surface. The hysteretic energy loss correlates well with the temperature. Microscopic studies show frictional sliding of longitudinal crack faces to be the main source of dissipation. With a finer dispersion of the constituents of the hybrid, the growth of these longitudinal cracks would be suppressed, which would result in a more fatigue resistant material. A localization of heat generation sets in just prior to final failure. Damage and heat localization lead to impending failure. If the parameters that control localization were known, a mechanistic model for life prediction could be conceived.

引用

页码：1731 / 1736

页数：6