Fatigue and Fracture Mechanics
The account above is purely empirical and, though it allows life prediction and design assurance, life improvement or design optimisation can be enhanced using Fracture mechanics. It can be developed in four stages.
- Crack nucleation;
- Stage I crack-growth;
- Stage II crack-growth; and
- Ultimate ductile failure.
Read more about this topic: Fatigue (material)
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