Investigation of dynamic mode I matrix crack-fiber bundle interaction in composites using caustics

被引：11
作者：
Hao, Wenfeng [1 ,2 ]
Tang, Can [1 ]
Yuan, Yanan [2 ]
Ma, Yinji [2 ]
机构：
[1] Jiangsu Univ, Fac Civil Engn & Mech, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Tsinghua Univ, Dept Engn Mech, Appl Mech Lab, Beijing 100084, Peoples R China
来源：
COMPOSITES PART B-ENGINEERING | 2016年 / 92卷
基金：
中国国家自然科学基金;
关键词：
Aramid fiber; Optical techniques; Fiber/matrix bond; Analytical modelling; Mechanical testing; REINFORCED COMPOSITES; STRENGTH; FAILURE;
D O I：
10.1016/j.compositesb.2016.02.045
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, the dynamic mode I matrix crack-fiber bundle interaction was studied using caustics. First, the strain fields at the dynamic mode I matrix crack tip ahead of the fiber bundles were deduced using transformation toughening theory. Subsequently, the caustic equation at mode I dynamic matrix crack tip ahead of the fiber bundles was established to investigate the influences of the fiber bundle and the crack propagating velocity on the initial curves and caustic curves at the dynamic matrix crack tip. Finally, a series of dynamic caustic spots surrounding the propagating crack tip were recorded using optical caustic experiment, and dynamic stress intensity factor were extracted from the shadow spots. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：395 / 404
页数：10
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