The effect of specimen cross-sectional area on the strength and toughness of two-dimensional C/SiC composites
The effect of specimen cross-sectional area on the strength and toughness of two-dimensional C/SiC composites
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DOI：
10.1016/j.ceramint.2014.10.130
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发表时间：
2015-03
影响因子：
5.2
通讯作者：
H. Mei;Shanshan Xiao;Q. Bai;Hongqin Wang;Haiqing Li;Lai-fei Cheng
中科院分区：
文献类型：
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作者：
H. Mei;Shanshan Xiao;Q. Bai;Hongqin Wang;Haiqing Li;Lai-fei Cheng
The current work investigates the effect of specimen cross-sectional area on the strength and toughness of two-dimensional carbon fiber-reinforced SiC matrix composites (C/SiC). Three types of C/SiC specimens with varying cross sections were fabricated by chemical vapor infiltration followed by heat treatments at 1500 °C and 1900 °C. Dogbone composite specimens were tested in tension for the determination of tensile strength, fracture toughness and elastic modulus. Results showed that, as specimen cross-sectional area decreased, fracture toughness and elastic modulus increased while tensile strength increased only marginally. Heat treatment was found to limit the effect of cross-sectional area on the tensile strength and elastic modulus of the C/SiC composites.
