A synergistic model of stress and oxidation induced damage and failure in silicon carbide?based ceramic matrix composites

A micromechanics-based modeling approach that allows for the simultaneous consideration of deformation, damage, and oxidation associated with each constituent silicon carbide (SiC)-based ceramic matrix composites (CMC), including fiber, fiber coating, matrix, is described. Chemical kinetics models from literature are combined a progressive damage model. Rupture predictions unnotched notched stress-hold (creep) specimens compared experimental measurements SiC/SiC CMC to assess efficacy approach. Techniques improving creep rupture life explored using