Linear Elastic Fracture Mechanics and Fatigue Crack Growth — Residual Stress Effects

In this paper the basic concepts of LEFM, fatigue crack growth and residual stress are reviewed in order to demonstrate that the amalgamation of these concepts is logical and consistent. The importance of both geometry and loading in the determination of stress intensity factor (K) is indicated, as is the validity of the superposition technique as applied to cracks in residual stress fields. Methods of determining K are described, with emphasis on those techniques suited to the determination of K in the presence of residual stress, in particular the weight function technique.

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