Design Guidelines for In‐Plane Mechanical Properties of SiC Fiber‐Reinforced Melt‐Infiltrated SiC Composites

In‐plane tensile stress–strain, tensile creep, and after‐creep retained tensile properties of melt‐infiltrated SiC–SiC composites reinforced with different fiber types were evaluated with an emphasis on obtaining simple or first‐order microstructural design guidelines for these in‐plane mechanical properties. Using the minimatrix approach to model stress–strain behavior and the results of this study, three basic general design criteria for stress and strain limits are formulated, namely a design stress limit , a design total strain limit , and an after‐creep design retained strength limit . It is shown that these criteria can be useful for designing components for high‐temperature applications.