Skip to main content
SpringerLink
Log in

The effect of rate on the impact fracture toughness of polymers

  • Published:
International Journal of Fracture Aims and scope Submit manuscript

Abstract

The determination ofG cfor a polyethylene and PTFE from a conventional energy measuring impact test is described, together with the use of plastic zone and slow crack growth corrections. The rate of the test is changed by two decades by varying the specimen dimensions andG cas a function of loading time is determined. A remarkably strong time dependence (t −0.42) is observed and this is discussed in terms of loss processes in the craze region at the crack tip.

Résumé

On décrit la détermination deG cpour un polyéthylène et un PTFE à partir d'un essai conventionnel d'impact et d'une mesure de l'énergie, ainsi que l'utilisation des corrections pour la zône plastique et pour la croissance lente de la fissure. La vitesse caractéristique de l'essai est modifiée de deux ordre de grandeur en faisant varier les dimensions de l'éprouvette, et on détermine ainsiG cen fonction du temps de mise en charge. Une remarquable dépendance du temps est observée, et cette particularité est discutée sous forme d'un processus de perte dans la zône particulière située à la pointe de la fissure.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. G. P. Marshall, C. E. Turner and J. C. Williams,Journal of Materials Science, 8 (1973) 949.

    Google Scholar 

  2. H. R. Brown,Journal of Materials Science, 8 (1973) 949.

    Google Scholar 

  3. E. Plati and J. G. Williams,Polymers Engineering Science, 15 (1975) 470.

    Google Scholar 

  4. E. Plati and J. G. Williams,Polymer, 16 (1975) 915.

    Google Scholar 

  5. J. G. Williams and M. W. Birch,Proceedings of the Fourth International Conference on Fracture, Vol. 1, Part IV. p. 501, University of Waterloo, Canada (19–24 June 1977).

    Google Scholar 

  6. G. P. Marshall, L. H. Coutts and J. G. Williams,Journal of Materials Science, 9 (1974) 1409.

    Google Scholar 

  7. M. Parvin and J. G. Williams,Journal of Materials Science, 10 (1975) 1883.

    Google Scholar 

  8. N. G. McCrum, B. E. Read and G. Williams,Anelastic and Dielectric Effects in Polymeric Solids, Wiley, New York (1967).

    Google Scholar 

  9. B. J. Briscoe and I. M. Hutchings,Polymer, 17 (1976)?.

  10. P. I. Vincent,Polymer, 15 (1974) 111.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Imperial College of Science and Technology, SW7 2BX, London, UK

    M. W. Birch & J. G. Williams

Authors
  1. M. W. Birch
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J. G. Williams
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Birch, M.W., Williams, J.G. The effect of rate on the impact fracture toughness of polymers. Int J Fract 14, 69–84 (1978). https://doi.org/10.1007/BF00032385

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00032385

Keywords

Search

Navigation