Application of stress intensity factor superposition in residual stress fields considering crack closure

• Clarification of stress intensity factor superposition under crack closure phenomena. Importance geometry changes by for is demonstrated. Proposal and discussion two alternative residual applied definitions. Discussion face contact modelling calculation in fatigue load cycles. The correlation between (SIF) range growth a powerful tool fail-safe design approaches to lightweight structures. key role precise the SIFs Advanced material processing can shape stresses makes SIF challenging task. While consideration tensile successfully tackled superposition, treatment compressive needs still clarification. This work demonstrates application principle regions containing high leading effects. Crack depends on combined interpreted as change this work. Thus relation source, i.e. or stress, its consequence, corresponding SIFs, interaction sources, load. Due interaction, stress-induced behaviour cannot be linked only. proposes definitions SIF, allowing clear either changes.