Effect of impact energy on damage resistance and mechanical property of C/SiC composites under low velocity impact

被引：26

作者：

Mei, Hui ^{[1
]}

Yu, Changkui ^{[1
]}

Xu, Yawei ^{[1
]}

Han, Daoyang ^{[1
]}

Cheng, Laifei ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 687卷

关键词：

Ceramic-matrix composites; Damage tolerance; Mechanical properties; Non-destructive testing; Mechanical testing; CARBIDE COMPOSITES; MATRIX COMPOSITES;

D O I：

10.1016/j.msea.2017.01.062

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The present study investigated the damage resistance of two dimensional carbon fiber reinforced silicon carbide (C/SiCs) composites subjected to low velocity impact (LVI). Damage microstructures of specimens under different impact energies (Es) were characterized by infrared thermography, X-ray computed tomography and scanning electron microscopy. The real damage radii of specimens were found to change slightly with Ei, whereas apparent damage radii where much larger. Overall, the fabricated 2D C/SiC composites exhibited good damage resistance to LVI with nominal post-impact tensile strengths remaining at 89.4%, 83.35%, 76.97%, and 74.84% of their pre-impacted counterpart of 158 MPa, for impact energies of 3, 4, 5, and 6 J, respectively. Compared with the as-received one, after LVI real tensile strengths of the C/SiC composite specimens increased by 5.84% for the Ei of 3 J, 9.27% for 4 J, 1.83% for 5 J, 3.16% for 6

引用

页码：141 / 147

页数：7

共 26 条

[1]

[Anonymous], C127500 ASTM

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