Advertisement

Journal of Materials Science

, Volume 29, Issue 23, pp 6091–6096 | Cite as

The impact behaviour of paints

  • N. N. Dioh
  • J. G. Williams
Article

Abstract

The split Hopkinson pressure bar has been used to study the impact behaviour of a selection of single and multi-layer paint systems in the form of films of thickness 0.04 mm. Stress-strain curves are presented for systems comprising three coatings, coating A, coating B and coating C, in compression for strain rates of the order 5×103 s−1. A comparison is made between the high strain-rate behaviour and that seen at quasi-static strain rates. All tests were carried out at 23 °C. The coatings studied are shown to be strain-rate sensitive, exhibiting almost a two-fold increase in flow/yield stress between the two strain-rate regimes. At low strain rates, all the coatings deformed uniformly with no sign of fracture. At high strain rates, both coating A and coating C underwent catastrophic failure which is indicative of their susceptibility to chipping. However, this was not the case with coating B which shows no signs of fracture at high strain rates for strains up to 45%. However, a combination of coating A and coating B in alternate layers led to catastrophic fracture of the resulting two-coat multi-layer system at high strain rates.

Keywords

Polymer Material Processing High Strain Rate Catastrophic Failure Paint System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    L. Rolland and L. J. Broutman, Polym. Eng. Sci. 25 (1985) 207.CrossRefGoogle Scholar
  2. 2.
    P. K. So and L. J. Broutman, ibid. 26 (1986) 1173.CrossRefGoogle Scholar
  3. 3.
    W. Maier and R. Liable, Forsch. Entwickl. 5 (1988) 337.Google Scholar
  4. 4.
    N. N. Dioh, P. S. Leevers and J. G. Williams, Polymer 34 (1993) 4230.CrossRefGoogle Scholar
  5. 5.
    S. M. Walley, J. E. Field, P. H. Hope and N. A. Safford, Phil. Trans. R. Soc. Lond. A328 (1989) 1.CrossRefGoogle Scholar
  6. 6.
    S. M. Walley, J. E. Field, P. H. Hope and N. A. Safford, J. de Phys. III Fr. 1 (1991) 1889.Google Scholar
  7. 7.
    B. J. Briscoe and R. W. Nosker, Wear 95 (1984) 241.CrossRefGoogle Scholar
  8. 8.
    U. S. Lindholm, J. Mech. Phys. Solids 12 (1964) 317.CrossRefGoogle Scholar
  9. 9.
    A. G. Atkins and Y-M. Mai, “Elastic and Plastic Fracture” (Ellis Horwood Series, Wiley, New York, 1985) p. 55.Google Scholar
  10. 10.
    J. H. Arding, in “Materials at high strain rates”, Edited by T. Z. Blazynski (Elsevier Applied Science, 1987) p. 133.Google Scholar
  11. 11.
    A. Ivankovic, PhD thesis, Department of Mechanical Engineering, Imperial College, London (1991).Google Scholar
  12. 12.
    N. N. Dioh, PhD thesis, Department of Mechanical Engineering, Imperial College, London (1993).Google Scholar

Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • N. N. Dioh
    • 1
  • J. G. Williams
    • 1
  1. 1.Department of Mechanical EngineeringImperial College of Science, Technology and MedicineLondonUK

Personalised recommendations