Strength Anisotropy of NITE-SiC/SiC Composite by Various Failure Modes

Abstract

SiC/SiC composite is a candidate material for demonstration fusion power reactor (DEMO). To identify the inherent anisotropy of composites, it requires predicting axial/off-axial mechanical properties by various failure modes. This study evaluated failure behavior of SiC/SiC composites by various mode tests such as tensile, Inter-laminar shear and Trans-thickness tensile modes. To provide strength anisotropy maps and discussed a method to predict this trend analytically. The identification of various fabric orientations from strength anisotropy maps clearly indicate that the composites failed by the mixed modes. The strength anisotropy can be described satisfactorily.