TY - JOUR
T1 - Effect of stitch spacing on mechanical properties of carbon/silicon carbide composites
AU - Nie, Jingjiang
AU - Xu, Yongdong
AU - Zhang, Litong
AU - Yin, Xiaowei
AU - Cheng, Laifei
AU - Ma, Junqiang
PY - 2008/9
Y1 - 2008/9
N2 - The effects of stitch spacing on the mechanical properties of the carbon fiber reinforced silicon carbide composites fabricated by chemical vapor infiltration (CVI) were investigated. The results showed that the stitch spacing had little effect on the density and open porosity of the composites. The stitches improved the shear and tensile strengths of all stitched C/SiC composites, by suppressing and delaying the delamination. However, flexural strength was not changed for the composites with stitch spacing of 10 mm or 5 mm, but was slightly reduced for densely stitched composites with spacing of 2.5 mm. The optimum stitch spacing was 5 mm, which improved apparently the interlaminar shear strength and tensile strength of the composites with little detrimental effect on the flexural strength.
AB - The effects of stitch spacing on the mechanical properties of the carbon fiber reinforced silicon carbide composites fabricated by chemical vapor infiltration (CVI) were investigated. The results showed that the stitch spacing had little effect on the density and open porosity of the composites. The stitches improved the shear and tensile strengths of all stitched C/SiC composites, by suppressing and delaying the delamination. However, flexural strength was not changed for the composites with stitch spacing of 10 mm or 5 mm, but was slightly reduced for densely stitched composites with spacing of 2.5 mm. The optimum stitch spacing was 5 mm, which improved apparently the interlaminar shear strength and tensile strength of the composites with little detrimental effect on the flexural strength.
KW - A. Ceramic-matrix composites
KW - B. Mechanical properties
KW - B. Microstructure
KW - E. Chemical vapor infiltration
KW - Stitch
UR - http://www.scopus.com/inward/record.url?scp=51649091860&partnerID=8YFLogxK
U2 - 10.1016/j.compscitech.2008.04.012
DO - 10.1016/j.compscitech.2008.04.012
M3 - 文章
AN - SCOPUS:51649091860
SN - 0266-3538
VL - 68
SP - 2425
EP - 2432
JO - Composites Science and Technology
JF - Composites Science and Technology
IS - 12
ER -