The creep behaviour of a rotating disc made of isotropic composite containing varying amount of SiC particles in the radial direction has been investigated in the presence of thermal gradients also in the radial direction. The thermal gradient experienced by the disc is the result of breaking action as estimated by finite element method. The creep behaviour has been described by Norton’s law. The results indicate that steady state creep rates are significantly decreased in the presence of linear particle gradient and/or thermal gradients, as compared to a composite disc with the same average particle content distributed uniformly and operating under isothermal conditions.
Keywords: modelling, creep, functionally graded rotating disc, composites