Journal of Materials Science

, Volume 4, Issue 6, pp 544–553 | Cite as

Low endurance fatigue in metals and polymers

Part 3 The mechanisms of failure
  • B. Tomkins
  • W. D. Biggs
Papers

Abstract

Studies of crack growth in fatigue of annealed aluminium, Nylon 66 and Araldite epoxy resin have revealed two mechanisms, shear and tensile tearing. The former applies both to fatigue and to tensile straining under approximately plane strain conditions and requires a capacity for plastic flow within the material. The latter mechanism occurs where flow is either restricted or impossible. A model for crack propagation in low endurance fatigue is described, and a rigid-plastic analysis is shown to be consistent with the observations.

Keywords

Polymer Aluminium Fatigue Epoxy Nylon 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    B. Tomkins and W. D. Biggs, J. Materials Sci. 4 (1969) 000.Google Scholar
  2. 2.
    N. Thompson, “Fracture”, edited by Averbach (Technology Press, 1959) p. 354.Google Scholar
  3. 3.
    W. A. Wood, S. Cousland, and K. R. Sargent, Acta Metallurgica 11 (1963) 643.Google Scholar
  4. 4.
    P. J. E. Forsyth, Symp. on Crack Propagation, Cranfield (1961) p. 76.Google Scholar
  5. 5.
    C. Laird and G. C. Smith, Phil Mag. 7 (1962) 847.Google Scholar
  6. 6.
    Idem, ibid 8 (1963) 1945.Google Scholar
  7. 7.
    W. F. Busse et al, J. Appl. Phys. 13 (1942) 715.Google Scholar
  8. 8.
    D. Prevorsek and W. J. Lyons, ibid 35 (1964) 4152.Google Scholar
  9. 9.
    E. H. Andrews, ibid 32 (1961) 542.Google Scholar
  10. 10.
    A. J. Mcevily, R. C. Boettner, and T. L. Johnston, “Fatigue”, 10th Sagamore Conf. (Syracuse University Press, 1964) p. 95.Google Scholar
  11. 11.
    G. J. Lake and P. B. Lindley, Conf. on Physical Basis of Yield and Fracture (Inst. Phys. and Phys. Soc. 1966) p. 176.Google Scholar
  12. 12.
    P. A. Mcclintock, as ref. [2] p. 560.Google Scholar
  13. 13.
    H. C. Rogers, as ref [2] p. 46.Google Scholar
  14. 14.
    L. J. Broutman and F. J. Mcgarry, J. Appl. Polymer Sci. 9 (1959) 609.Google Scholar
  15. 15.
    I. Wolcock and S. B. Newman, “Fracture Processes in Polymeric Solids,” edited by Rosen (Interscience, 1964) p. 235.Google Scholar
  16. 16.
    A. H. Cottrell, as ref [4] p. 1.Google Scholar
  17. 17.
    R. W. Kraft and R. W. Hertzberg, Trans A IMME 227 (1963) 580.Google Scholar
  18. 18.
    J. W. R. De Villiers, Ph.D Thesis (University of Cambridge, 1966).Google Scholar
  19. 19.
    B. Tomkins, Phil. Mag. 18 (1968) 1041.Google Scholar

Copyright information

© Chapman and Hall 1969

Authors and Affiliations

  • B. Tomkins
    • 1
  • W. D. Biggs
    • 1
  1. 1.Engineering LaboratoryUniversity of CambridgeUK

Personalised recommendations