Interlaminar shear damage mechanisms of a 2D-C/SiC composite at elevated temperature in vacuum

被引：18
|
作者：
Zhang, Chengyu [1 ]
Wang, Hailing [1 ]
Liu, Yongsheng [1 ]
Qiao, Shengru [1 ]
Li, Mei [1 ]
Han, Dong [1 ]
机构：
[1] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Peoples R China
来源：
VACUUM | 2014年 / 105卷
基金：
美国国家科学基金会;
关键词：
Carbon fiber reinforced silicon carbide composite; Inter laminar shear strength; Damage; CERAMIC-MATRIX COMPOSITES; CONSTITUENT PROPERTIES; CRACKING BEHAVIOR; CARBON-FIBERS; 2D WOVEN; STRENGTH; TENSILE; INPLANE; REDISTRIBUTION; FRACTURE;
D O I：
10.1016/j.vacuum.2014.02.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of the study is to reveal the damage mechanisms of a plain woven carbon fiber cloth reinforced silicon carbide composite (2D-C/SiC) under interlaminar shear stress at elevated temperature. The interlaminar shear tests were carried out by compression of a double-notched specimen. Damage mechanisms were revealed by loading/unloading experiments. The damage evolution mainly involves the initiation and propagation of intra-bundle cracks, matrix cracking and emergence of the cracks. Release of the residual thermal stresses in the matrix and improved bonding of fiber/matrix interface enhance the resistance to initiate cracks. More cracks could be generated above the preparation temperature, and result in the degradation in interlaminar shear strength and crack initiation stress. (c) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：63 / 68
页数：6
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