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Crack Coalescence Modelling of FSW Joints

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Fracture of Nano and Engineering Materials and Structures

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Abstract

In the present work, Friction Stir Welds (FSW) of 2024-T351 aluminium alloys is characterised in terms of macrostructure, microstructure, hardness, precipitate distribution, and weld residual stress. Cyclic properties and fatigue endurance of the FSW joints are also investigated and discussed. Critical areas for natural fatigue crack initiation in FSW are pinpointed. The fatigue mechanism in FSW is identified to follow a multiple crack coalescence nature (Figure 1). The number of cracks participate in coalescence and the resulting crack growth rate is governed by the dynamic distance between the crack tips from crack initiation to coalescence. The above represents a complex condition for modelling.

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References

  1. P. D. Hobson, M.W. Brown., E. R. de Los Rios, Two phases of short crack growth in a medium carbon steel. Behaviour of shorth fatigue crack (Edited by K. J. Miller & Eduardo), 1986: p. 441–459.

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Author information

Authors and Affiliations

  1. Department of Mechanical and Manufacturing Engineering Faculty, Putra University Malaysia, 43400, Serdang Selangor, Malaysia

    A. Ali

  2. Department of Mechanical Engineering, University of Sheffield, Sir Frederick Mappin Building, Mappin Street, Sheffield, S1 3JD, UK

    M. W. Brown

  3. Structural Materials and Integrity Research Centre, Materials and Engineering Research Institute, Sheffield Hallam University, City Campus, Howard Street, UK

    Chris A. Rodopoulos

Authors
  1. A. Ali
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  2. M. W. Brown
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  3. Chris A. Rodopoulos
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Editor information

Editors and Affiliations

  1. Dept of Civil Engineering, Democritus University of Thrace, Xanthi, Greece

    E. E. Gdoutos

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© 2006 Springer

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Ali, A., Brown, M.W., Rodopoulos, C.A. (2006). Crack Coalescence Modelling of FSW Joints. In: Gdoutos, E.E. (eds) Fracture of Nano and Engineering Materials and Structures. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4972-2_79

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  • DOI: https://doi.org/10.1007/1-4020-4972-2_79

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-1-4020-4971-2

  • Online ISBN: 978-1-4020-4972-9

  • eBook Packages: EngineeringEngineering (R0)

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