Effect of strain rate, off

The compressive strength of C/SiC composite at different strain rates, off-axis orientations and after high-velocity impact was studied. The compressive strength was found to be 137？±？23, 130？±？46 and 162？±？33？MPa at a strain rate of 3.3？×？10？5, 3.3？×？10？3, 3.3？×？10？3 s？1, respectively. On the other hand, the compressive strength was found to be 130？±？46, 99？±？23 and 87？±？9？MPa for 0°/90°, 30°/60° and 45°/45° fibre orientations to loading direction, respectively. After high-velocity impact, the residual compressive strength of C/SiC composite was found to be 58？±？26, 44？±？18 and 36？±？3.5？MPa after impact with 100, 150 and 190？m/s, respectively. The formation of kink bands in fibre bundles was found to be dominant micro-mechanism for compressive failure of C/SiC composite for 0°/90° orientation. On the other hand, delamination and the fibre bundles rotation were found to be the dominant mechanism for off-axis failure of composite