MAT6377   Deformation, Fracture and Fatigue (DL)   (15 credits)

Description

Deformation, fracture and fatigue are important mechanical phenomena in both metals processing and use. The role of dislocations in and the effects of microstructural features on the plastic deformation of metals is initially explored. Consideration of fracture starts with linear elastic fracture mechanics including the Griffith equation and Irwin stress intensity factors. The effects of plasticity effects on fracture in metals including plastic zones at crack tips and cyclical fatigue are considered in some detail. Both total lifetime approaches and damage tolerance approaches to fatigue are considered.

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