4.6 Characterization of Crack-tip Stress Fields using Fracture Mechanics Parameters
Crack tip hoop stresses calculated from the FE analysis under creep-fatigue loading are compared with analytical crack tip stresses from RR (Riedel and Rice) fields [18] which are theC *-controlled crack-tip stress fields under steady state creep conditions for a power-law creep material. The stress fields are given by