EFFECT OF UNIFORMITY OF FIBER ARRANGEMENT ON TENSILE FRACTURE BEHAVIOR OF UNIDIRECTIONAL MODEL COMPOSITES

摘要

In the present study, the influence of the uniformity of geometric fiber arrangement on the mesoscopic fracture behavior was analytically investigated for the unidirectional fiber-reinforced composites. A Monte Carlo simulation of the mesoscopic fracture process is performed using the modified shear-lag analysis method for polymer matrix composites and ceramic matrix composites. The overall fracture load and the mesoscopic fracture process are compared between the uniform and non-uniform fiber arrangements. Secondary, the difference in the effect of the fiber arrangement uniformity is discussed between polymer matrix composites, which have the low modulus matrix, and ceramic matrix composites, which have the high modulus matrix.