Author(s)

K. Hirano, K. Etoh & M. Kikuchi

Abstract

Fracture toughness testing are firstly conducted on continuous fiber unidirec- tionally reinforced both titanium alloy and titanium aluminide intermetallic matrix composites. There is a remarkable initial notch length dependence of fracture toughness experimentally determined at an unstable fracture. It is resulted from reinforcement fiber bridging during the stable crack growth behavior. Nextly, the crack tip stress intensity factor are calculated based on fiber pressure model, and successfully predicted the initial notch length dependence of fracture toughness. 1 Introduction Various advanced structura

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