The effect of fiber microstructure on evolution of residual stresses in silicon carbide/titanium aluminide compositesThis 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 arc compared with those obtained based on the assumption that the silicon carbide fiber is isotropic and homogeneous.
Pindera, Marek-Jerzy (Virginia Univ. Charlottesville, United States)
Freed, Alan D. (NASA Lewis Research Center Cleveland, OH, United States)
August 16, 2013
January 1, 1992
Publication: In: Topics in composite materials and structures; Proceedings of the Sessions, ASME Summer Mechanics and Materials Conference, Tempe, AZ, Apr. 28-May 1, 1992 (A93-54768 24-39)