Journal of Materials Science

, Volume 12, Issue 11, pp 2329–2342 | Cite as

Assessment of damage in GRP laminates by stress wave emission and dynamic mechanical measurements

  • G. D. Sims
  • G. D. Dean
  • B. E. Read
  • B. C. Western
Papers
Received:
Accepted:

Abstract

Stress wave emission (SWE) and dynamic mechanical methods are described for monitoring the damage introduced into certain glass fibre-reinforced epoxy specimens by the application of a tensile load. For one particular composite system, a cross-ply laminate, it was possible to measure the concentration of damage by an independent optical method and correlations have been found between the SWE and dynamic mechanical results and the area of cracking. It remains to be established whether these correlations apply to other reinforcement geometries. This work is considered a first stage towards using these methods for monitoring the integrity of a component in service, from which its remaining life might be assessed.

Keywords

Polymer Epoxy Tensile Load Composite System Stress Wave 
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.
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    L. J. Broutman,Modern Plastics 42 (1965) 143.Google Scholar
  2. 2.
    M. J. Owen, andR. Dukes,J. Strain Anal. 2 (1967) 272.Google Scholar
  3. 3.
    L. J. Broutman, andS. Sahu,ASTM S.T.P. 497 (1972) 170.Google Scholar
  4. 4.
    A. D. S. Diggwa, andR. H. Norman,Plastics and Polymers 40 (1972) 263.Google Scholar
  5. 5.
    M. J. Owen, andS. Morris,ibid 40 (1972) 209.Google Scholar
  6. 6.
    A. B. Shultz, andD. N. Warwick,J. Composite Mater. 5 (1971) 394.Google Scholar
  7. 7.
    A. T. DiBenedetto, J. V. Gauchel, R. L. Thomas, andJ. W. Barlow,J. Mater. Sci. 7 (1972) 211.Google Scholar
  8. 8.
    R. D. Adams, J. E. Flitcroft, N. L. Hancox, andW. N. Reynolds,J. Composite Mater. 7 (1973) 68.Google Scholar
  9. 9.
    R. G. Liptai,ASTM S.T.P. 497 (1972) 285.Google Scholar
  10. 10.
    N. O. Cross, L. L. Loushin, andJ. L. Thompson,ASTM S.T.P. 505 (1972) 270.Google Scholar
  11. 11.
    R. L. Mehan, andJ. V. Mullin,J. Composite Mater. 5 (1971) 266.Google Scholar
  12. 12.
    E. G. Henneke, C. T. Herakovich, G. L. Jones, andM. P. Renieri,Expt. Mechanics 15 (1975) 10.Google Scholar
  13. 13.
    G. D. Sims, NPL External Report IMS 29 (1975).Google Scholar
  14. 14.
    B. J. Keene, andG. D. Sims,ibid 21 (1973) 21.Google Scholar
  15. 15.
    G. A. Cooper andJ. M. Sillwood,J. Mater. Sci. 7 (1972) 325.Google Scholar
  16. 16.
    R. S. Williams, andK. L. Reifsnider,J. Composite Mater. 8 (1974) 340.Google Scholar
  17. 17.
    T. R. Tauchert, andN. N. Hsu,ibid 7 (1973) 516.Google Scholar
  18. 18.
    J. M. Speake, andG. J. Curtis, Proceedings of International Conference on Carbon Fibres, their place in Modern Technology (Plastics Institute, London, 1974) Paper No. 29.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1977

Authors and Affiliations

  • G. D. Sims
    • 1
  • G. D. Dean
    • 1
  • B. E. Read
    • 1
  • B. C. Western
    • 1
  1. 1.Division of Materials ApplicationsNational Physical LaboratoryTeddingtonUK

Personalised recommendations