Materials exhibit different behaviors under cyclic thermal loading, similar to cyclic mechanical loading in fatigue. Applications, where materials are subject to high thermal gradients, require additional testing on top of typical static and fatigue tests. These components may be exposed to thermomechanical fatigue (TMF), where they experience cyclic mechanical and thermal loading under service conditions. Contributions of creep and fatigue to the TMF damage in structural integrity under combined thermal and mechanical loading cycles are monitored and analyzed in order to ensure safe operating conditions for the duration of the component’s life cycle.