Interface effects on crack deflection and bridging during fatigue crack growth of titanium matrix composites

摘要

The effect of the interface on the crack deflection and crack bridging behavior of continuous fiber-reinforced titanium matrix composites has been investigated using three interfaces with signifi- cantly different mechanical characteristics. Each of these composites exhibited stress rages in which fiber bridging was present and stress ranges in which stable fiber bridging was not present. The fatigue crack growth rate for all composites, even for the ones that did not exhibit fiber bresent, was signifi- cantly below that of the matrix.