“…Kopecki and Walczak (1976) considered the creep process of a rotating disk with exponentially variable thickness. The FEM (ADINA program) has been applied to creep and creep rupture problems of rotating disks by Arya and Bhatnagar (1979), Tsuda et al (1979), hrya el al. A paper devoted to the creep rupture problem of rotating disks from a probabilistic point of view has been published by Matsuo and Sato (1979).…”