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On non-Hookean behaviour of carbon fibres in bending

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Abstract

The deformation characteristics of a range of single, large diameter pitch-based carbon fibres, and some PAN- and rayon-based fibres, were studied in elastica loop bending experiments. In pitch-based fibres, non-Hookean behaviour was found to occur at lower strains the greater the fibre anisotropy. Only elastic deformation to failure, at strains of 3%, was found for low-modulus, nearly isotropic pitch- and rayon-based fibres. The non-linear elastic behaviour in pitch-based fibres resulted in pronounced hysteresis and discontinuities in the stress-strain plots on both unloading and reloading the loops. These effects are due to the initiation, propagation and possible healing of transverse microcracks on the compression side of the fibres.

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References

  1. 1.

    J. H. Greenwood andP. G. Rose,J. Mater. Sci. 9 (1974) 1809.

  2. 2.

    W. L. Wu, V. F. Holland andW. B. Black,J. Mater. Sci. Lett. 14 (1979) 250.

  3. 3.

    S. J. DeTeresa, R. S. Porter andR. J. Farris,J. Mater. Sci. 23 (1988) 1886.

  4. 4.

    D. C. Martin andE. L. Thomas,ibid. 26 (1991) 5171.

  5. 5.

    W. S. Williams, D. A. Steffens andR. Bacon,J. Appl. Phys. 41 (1970) 4893.

  6. 6.

    W. R. Jones andJ. W. Johnson,Carbon 9 (1971) 645.

  7. 7.

    H. M. Hawthorne andE. Teghtsoonian,J. Mater. Sci. 10 (1975) 41.

  8. 8.

    J. L. G. DaSilva andD. J. Johnson,ibid. 19 (1984) 3201.

  9. 9.

    N. Melanitis andC. Galiotis,ibid. 25 (1990) 5081.

  10. 10.

    N. L. Hancox,ibid. 10 (1975) 234.

  11. 11.

    H. T. Hahn andM. M. Sohi,Compos. Sci. Technol. 27 (1986) 25.

  12. 12.

    S. L. Bazhenov andV. V. Kozey,J. Mater. Sci. 26 (1991) 6764.

  13. 13.

    H. F. Wu andJ. R. Yeh,ibid. 27 (1992) 755.

  14. 14.

    N. Everall andJ. Lumsdon,ibid. 26 (1991) 5269.

  15. 15.

    H. M. Hawthorne andE. Teghtsoonian, in Extended Abstracts of 12th Biennial Conference on Carbon, Pittsburgh, 1975 (American Carbon Society) p. 295.

  16. 16.

    H. M. Hawthorne, in Proceedings of 1st International Carbon Fibres Conference, London, 1971,Plastics & Polymers Conference Supplement 5 (The Plastics Institute, London, 1971) p. 81.

  17. 17.

    D. Sinclair,J. Appl. Phys. 21 (1950) 380.

  18. 18.

    E. Morinobu,J. Mater. Sci. 23 (1988) 598.

  19. 19.

    I. Mochida, S. M. Zeng, Y. Korai, T. Hino andH. Toshima,ibid. 27 (1992) 1960.

  20. 20.

    W. N. Reynolds andJ. V. Sharp,Carbon 12 (1974) 103.

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Hawthorne, H.M. On non-Hookean behaviour of carbon fibres in bending. J Mater Sci 28, 2531–2535 (1993). https://doi.org/10.1007/BF01151688

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Keywords

  • Polymer
  • Anisotropy
  • Carbon Fibre
  • Large Diameter
  • Elastic Deformation