Interlaminar shear fatigue properties of a two-dimensional carbon fibre reinforced silicon carbide composite were investigated at room temperature (RT) and 900 deg C in air. The interlaminar shear strength (ILSS) of the survived specimens was determined to reveal the damage mechanisms. The composite presents excellent resistance to fatigue at RT. The fatigue limits at 900 deg C are much lower than that at RT. Moreover, ILSS can be enhanced for the survived composite to some extent. The damage involves the matrix cracking and interfacial debonding. Such damage offers the channels for the oxidation of the pyrolytic carbon interface and carbon fibres, and leads to the decrease in the fatigue limits at 900 deg C.
Origin
Northwestern Polytechnic University, China
Journal Title
Advances In Applied Ceramics 113 4 2014 208-213 Society of Glass Technology
Sector
Glass Fibre
Class
GF 690