C. Marston et al., THE EFFECT OF FIBER SIZING ON FIBERS AND BUNDLE STRENGTH IN HYBRID GLASS CARBON-FIBER COMPOSITES, Journal of Materials Science, 32(6), 1997, pp. 1415-1423
Tests have been carried out on single carbon fibres supplied in the si
zed and unsized conditions, as well as impregnated tows and tows in a
glass-carbon fibre hybrid composite of the same fibre. The results wer
e analysed using a Weibull distribution for the strengths of the reinf
orcing fibres and composites. The tensile strength of the single fibre
s appeared to be unaffected by the sizing of the filaments. In the cas
e of the impregnated tows, an increase in characteristic strength of 7
% was observed for the unsized fibres. The strength of the impregnated
tows in hybrid composites was seen to be 15% higher than those tested
in air. This can be attributed to the ''hybrid effect''.