Effect of Fiber Waviness on the Tensile Response of 2D C(f)/SiC Ceramic Matrix Composites

The mastercurve approach was employed to analyze the response of a satin weave and a plain weave reinforced C(f)/SiC ceramic matrix composite under tensile loading at both room and elevated temperatures. For each test specimen, the mastercurve was used to determine the magnitude of the axial residual stresses and to derive the “actual” values of the constituent properties, namely the first additional matrix cracking stress and the fiber fracture stress. It is shown that the waviness of the fiber reinforcement affects the matrix cracking stress but that the type of weave does not influence the in-situ fiber strength properties.