|
|||||
|
|
A fatigue damage map for 2024-T3 aluminium alloy |
|
| Authors: | C. A. RODOPOULOS E. R. DE LOS RIOS A. LEVERS J. R. YATES |
| Affiliation: | Structural Integrity Research Institute of the University of Sheffield (SIRIUS), Department of Mechanical Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK,;British Aerospace Airbus, Chester Road, Broughton, Chester CH4 0DR, UK |
| Abstract: | The propagation of a fatigue crack from an initial defect of the same order as the scale of the microstructure through to failure has been modelled using a representation of fatigue damage according to the Navarro–de los Rios (N–R) model. The fatigue processes are presented in the form of a fatigue damage map (FDM). It is shown how the map can be used to create a traditional S–N curve and to provide information suitable for estimating fatigue lifetimes under damage tolerant conditions. |
| Keywords: | crack arrest crack instability fatigue damage map microstructurally dependent propagation microstructurally independent propagation |