An equation of the critical volume fraction, fpc, of particle-reinforcement in a composite, including particle size, yield strength of the matrix, dissipation work in the vicinity of the particles and the width of the interface zone, has been educed by the energy theory on the basis of the types of microscopic failure of the composite.

Effect of fiber volume fraction on friction and wear properties of C/C composites;

Calculation of fiber volume fraction for multidirectional filament wound glass-fiber/epoxy tubes;

The relationships of the loop length, stitch density and thickness of fabrics to yarn linear density were analyzed with the experiment data, and the fiber volume fraction of glass fiber plain knitted fabrics was estimated theoretically.

Effects of various fibre volume fraction on the performances of C/C composite;

In this paper, the effects of the fibre volume fraction on mechanical properties of K 3D/MCPA composites are presented.

Based on three group of integer felts with different fiber volume content were densified with CVD pyrolytic carbon, and a model of gas transport within a integer felt on the course of CVD process, the effect of carbon fiber volume content on the densification course of CVD (chemical vapor deposition) was investigated.

The geometry model formular is used to deduce the length of yarns,the oridentation angle of the nodulated yarns and the fiber volume content on some typical 2.