Theoretical model of fiber debonding and pull-out in unidirectional hybrid-fiber-reinforced brittle-matrix composites

被引：8
|
作者：
Meng, Qinghua [1 ]
Wang, Zhenqing [1 ]
机构：
[1] Harbin Engn Univ, Coll Aerosp & Civil Engn, Harbin 150001, Peoples R China
来源：
JOURNAL OF COMPOSITE MATERIALS | 2015年 / 49卷 / 14期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
Hybrid-fiber-reinforced composites; shear-lag model; interface debonding; fiber pull-out; hybrid effect; MECHANICAL-PROPERTIES; POLYMER COMPOSITES; TENSILE-STRENGTH; STRESS-CONCENTRATIONS; INTERFACIAL ADHESION; FIBROUS COMPOSITES; FAILURE; FRACTURE; CARBON; CERAMICS;
D O I：
10.1177/0021998314540191
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
A theoretical model is developed to study the fiber debonding and pull-out in hybrid-fiber-reinforced brittle-matrix composites. By adopting the shear-lag model which includes the matrix shear deformation in the bonding region and friction in the debonding region, the relationship between the pull-out length and the debonding length of fiber is obtained by treating the interface debonding as a particular crack propagation problem along the interface. The interface debonding criterion for the hybrid-fiber-reinforced composites is obtained by applying the energy release rate relation in an interface debonding process. The analysis is applied to hybrid carbon/glass fiber-reinforced epoxy composites, and the theoretical results have a reasonable agreement with the experimental data. The hybrid effect is studied and the effect of material parameters is discussed.
引用
收藏
页码：1739 / 1751
页数：13
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