A fatigue damage map for 2024-T3 aluminium alloy

Authors

  • C. A. RODOPOULOS,

    1. Structural Integrity Research Institute of the University of Sheffield (SIRIUS), Department of Mechanical Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK,
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  • E. R. DE LOS RIOS,

    1. Structural Integrity Research Institute of the University of Sheffield (SIRIUS), Department of Mechanical Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK,
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  • A. LEVERS,

    1. British Aerospace Airbus, Chester Road, Broughton, Chester CH4 0DR, UK
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  • J. R. YATES

    1. Structural Integrity Research Institute of the University of Sheffield (SIRIUS), Department of Mechanical Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK,
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J. R. Yates. E-mail: j.yates@sheffield.ac.uk; C. A. Rodopoulos. E-mail: c.rodopoulos@sheffield.ac.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.

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