Effect of Needling Parameters on Mechanical Properties of C/C Composites Reinforced by Carbon Cloth
The influence of needling parameters on mechanical properties of carbon-carbon (C-C)composites reinforced by needled carbon cloth was studied in the present investigation. The results showed that needling density (ND)and needle-punching depth (PD) both had a larger effect on interlaminar shear strength (ILSS) than on compression strength and flexible strength of Needling C-C(NC-C). The mechanical properties of NC-C increased with increasing punching density in the range of 20-45 punch/cm2 and also with increasing punching depth range from10 to16mm. The NC-C with the highest ND value of 55punch/cm2 had highest ILSS value of 27 MPa.The optimized ND and PD parameters was 30 punch/cm2 and 12mm respectively, which resulted in a high value of tensile strength(119MPa), bending strength (220MPa) and compression strength (235 MPa) in the X-Y direction .
Yafang Han et al.
X. H. Zhang et al., "Effect of Needling Parameters on Mechanical Properties of C/C Composites Reinforced by Carbon Cloth", Materials Science Forum, Vols. 546-549, pp. 1521-1524, 2007