High-temperature transverse fracture toughness of nicalon-fiber-reinforced CAS-II glass-ceramic matrix composite

摘要

Cracking parallel to the fibers in off-axis plies is usually the initial form of damage in composite laminates. This crack- ing process has been associated with the (transverse) frac- ture toughness, defined by the critical strain energy release rate, G_Ic. The measurement of G_Ic provides basic informa- tion about the transverse crack resistance.