Multi-axial creep-fatigue analysis of a cracked groove structure subjected to cyclic thermal loading

The aim of this study is to analyze the local change in stress–strain and damage behavior in an inlet groove structure of a power plant component under the effect of the crack geometrical constraint. A robust constitutive model is used to describe the inelastic behavior of advanced 9–12% Cr heat-resistant steels at high temperature. Steam temperature and loading profiles corresponding to the idealized startup, holding and shutdown sequence of...