Multiple matrix cracking in brittle matrix composites

摘要: A theory to describe the evolution of multiple matrix cracking in brittle composites is presented. The based on similarity between and fiber fragmentation a single-fiber composite, problem recently addressed by present author. Assuming critical strain criterion for cracking, number cracks vs applied stress distribution crack spacings at saturation are shown depend statistical initial flaws material constituent properties, particularly fiber/matrix interfacial sliding resistance tau. Hence, using fit experimental data leads deduction value Application recent Nicalon fiber/CAS glass yields estimates tau = 19 22 MPa two different samples. These values close some obtained other approximate means but disagreement with estimates, origin discrepancy various as yet unresolved.