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Volume 17, Issue 2, 2008
LETTER: MECHANICAL PROPERTIES OF 2D C/SIC COMPOSITES WITH TWO DIFFERENT CARBON TOWS
Yiqiang Wang*, Litong Zhang, Laifei Cheng, Junqiang Ma
National Key Laboratory of Thermostructure Composite Materials, Northwestern Polytechnical University, Xi’an Shaanxi, 710072, People’s Republic of China
* Author to whom correspondence should be addressed, email: wangyiqiang@mail.nwpu.edu.cn
Received 8 February 2008;accepted 4 April 2008
ABSTRACT
The mechanical properties of woven cloth with two sizes of carbon tows reinforced silicon carbide composites were investigated by tension, shear and bending tests. The experimental results show that the composite fabricated with small tows possesses greater stiffness and strength than the composite with large tows. Unequal tow size caused differences
of the warp waviness and the void volume fraction in the composites, which led to differences in mechanical
properties of composites.
Keywords: Ceramic matrix composites; Carbon fibre; Mechanical properties; Tow sizes
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