Effect of fiber microstructure on evolution of residual stresses in silicon carbide/titanium aluminide composites
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This paper examines the effect of the morphology of the SCS6 silicon carbide fiber on the evolution of residual stresses in SiC/Ti composites. A micromechanics model based on the concentric cylinder concept is presented which is used to calculate residual stresses in a SiC/Ti composite during axisymmetric cooling by a spatially uniform temperature change. The silicon carbide fiber is modeled as a layered material with five distinct transversely isotropic and orthotropic, elastic layers, whereas the titanium matrix is taken to be isotropic, with temperature-dependent elastoplastic properties. The results are compared with those obtained based on the assumption that the silicon carbide fiber is isotropic and homogeneous.
author list (cited authors)
Pindera, M. J., & Freed, A. D.