Prediction of the electrical conductivity of two-dimensionally misoriented short fiber composites by a percolation model

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Abstract
A percolation model combined with Monte Carlo method has been applied to two-dimensionally misoriented short fiber composites with the aim of predicting the effective electrical conductivity of the composite. Then the threshold volume fraction of fiber (VFth) at and above which the composite becomes conductive was computed for several cases of misoriented short fiber composites, i.e., from completely random to reasonably well oriented short fiber composites. It was found in this study that the larger the fiber aspect ratio and the more randomly fibers are oriented, the smaller the value of VFth becomes.