Journal of Materials Science

, Volume 13, Issue 10, pp 2197–2204 | Cite as

The fracture energy of hybrid carbon and glass fibre composites

  • J. N. Kirk
  • M. Munro
  • P. W. R. Beaumont


The fracture energy of a model carbon fibre/glass fibre/epoxy resin hybrid composite system has been evaluated as a function of the carbon fibre/glass fibre ratio. Work of fracture measurements were less than a rule of mixtures prediction and a pronounced negative synergistic effect was observed at high carbon fibre and high glass fibre contents. Fibre debonded lengths and fibre pull-out lengths for the carbon and glass fibres were accurately measured using a projection microscope technique. Models of microscopic fracture behaviour, together with these measurements, were successful in quantitatively describing the observed fracture behaviour of the hybrid fibrous composites. It was found that post-debond friction energy provided a major contribution to the fracture energy of the glass fibres. The post debond sliding mechanism was also shown to be primarily responsible for the non-linear behaviour of the work of fracture of the hybrid composite.


Glass Fibre Fracture Energy Fibrous Composite Fibre Ratio Resin Hybrid 
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  1. 1.
    P. W. R. Beaumont, J. Adhesion 6 (1974) 107.Google Scholar
  2. 2.
    P. W. R. Beaumont and B. Harris, J. Mater. Sci. 7 (1972) 1265.Google Scholar
  3. 3.
    J. O. Outwater and M. C. Murphy, 24th Annual Technical Conference on Reinforced Plastics/Composites Division; Paper 11C (Society of Plastics Industry, Inc., 1969).Google Scholar
  4. 4.
    B. Harris, J. Morley and D. C. Phillips, J. Mater. Sci. 10 (1975) 2050.Google Scholar
  5. 5.
    B. Gershon and G. Marom, ibid. 10 (1975) 1549.Google Scholar
  6. 6.
    C. C. Chamis, M. P. Hanson and T. T. Serafini, ASTM STP 497 (1972) 324.Google Scholar
  7. 7.
    B. Harris and A. R. Bunsell, Composites 6 (1975) 197.Google Scholar
  8. 8.
    P. W. R. Beaumont, P. S. Riewald and C. Zweben, ASTM STP 568 (1974) 134.Google Scholar
  9. 9.
    P. G. Riewald and C. Zweben, 30th Annual Technical Conference on Reinforced Plastics/Composites Division (Society of Plastics Industry, Inc., 1975).Google Scholar
  10. 10.
    P. K. Mallick and L. J. Broutman, ibid. Google Scholar
  11. 11.
    D. F. Adams and A. K. Miller, Mater. Sci. Eng. 19 (1975) 245.Google Scholar
  12. 12.
    J. L. Perry and D. F. Adams, Composites 6 (1975) 166.Google Scholar
  13. 13.
    G. A. Cooper, J. Mater. Sci 12 (1977) 277.Google Scholar
  14. 14.
    B. Harris, P. W. R. Beaumont and E. Moncunill de Ferran, ibid. 10 (1971) 238.Google Scholar
  15. 15.
    A. H. Cottrell, Proc. Roy. Soc. (Lond.) A282 (1964) 2.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1978

Authors and Affiliations

  • J. N. Kirk
    • 1
  • M. Munro
    • 1
  • P. W. R. Beaumont
    • 1
  1. 1.Department of EngineeringUniversity of CambridgeCambridgeUK

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