Time-Dependent Response of MI SiC/SiC Composites. Part 2: Samples with Holes

摘要

Time-dependent response of samples with holes manufactured from MI SiC/SiC composites (01/01 material) was experimentally evaluated under creep and dwell fatigue loading. Forty specimens with a central hole with sizes 2.286, 4.572 and 6.35 mm were tested. All specimens showed primary and steady state creep responses. Environmental degradation was empirically related to material response at different stress levels utilizing information from samples without holes. ANSYS Finite Element Analysis was used to map the creep strain in the vicinity of the hole utilizing the empirical correlation.