On the energy balance of fatigue crack growth
Abstract
The work necessary to create a unit of fracture surface is discussed. In ideally brittle fracture this is a small and reversible term. In ductile fracture (even if it can be treated by linear elastic fracture mechanics) it is much larger and most of it is dissipated as heat. In fatigue fracture even more energy is dissipated, partly by processes that are geometrically reversible. This is demonstrated on cracks loaded with a small amplitude deltaK.
- Publication:
-
Computers and Structures
- Pub Date:
- July 1992
- Bibcode:
- 1992CoStr..44...13S
- Keywords:
-
- Brittle Materials;
- Crack Propagation;
- Energy Dissipation;
- Fatigue Tests;
- Fracture Mechanics;
- Strain Energy Methods;
- Crack Geometry;
- Fracture Strength;
- Plane Strain;
- Solid Surfaces;
- Structural Mechanics