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Application Of Dielectric Analysis To The Study Of Ageing In Adhesive Bonded Structures

Published online by Cambridge University Press:  10 February 2011

Richard A. Pethrick ,
Sadanand B. Joshi ,
David Hayward ,
Zhi-Cheng Li ,
Steven Halliday ,
William M. Banks ,
Ray Gilmore  and
Lawrence W. Yates
Richard A. Pethrick
Affiliation:
Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, Cathedral Street, Glasgow GI IXL, UK.
Sadanand B. Joshi
Affiliation:
Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, Cathedral Street, Glasgow GI IXL, UK.
David Hayward
Affiliation:
Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, Cathedral Street, Glasgow GI IXL, UK.
Zhi-Cheng Li
Affiliation:
Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, Cathedral Street, Glasgow GI IXL, UK.
Steven Halliday
Affiliation:
Department of Mechanical Engineering, University of Strathclyde, James Weir Building, Montrose Street, Glasgow GI 1XJ, UK.
William M. Banks
Affiliation:
Department of Mechanical Engineering, University of Strathclyde, James Weir Building, Montrose Street, Glasgow GI 1XJ, UK.
Ray Gilmore
Affiliation:
Structural Materials Centre, Defence Research Agency, Farnborough, Hants, UK.
Lawrence W. Yates
Affiliation:
Structural Materials Centre, Defence Research Agency, Farnborough, Hants, UK.
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Abstract

Dielectric techniques have the potential of allowing observation of changes in the dipole mobility within an adhesive joint structure as a result of its exposure to a warm humid environment. Water molecules absorbed by an adhesive resin will exhibit a series of distinct relaxation features, which are characteristic of the environment in which the molecules are located. Hydration of the surface oxide of an aluminium-epoxy joint will produce a distinctive dielectric relaxation at approximately 1 MHz which is quantitatively related to the amount of hydroxide formed. Data on aged adhesive joints indicates that the dielectric technique has potential for the study of the changes occurring within the joints and the technique may be also used for studies of carbon fibre - epoxy - carbon fibre structures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 503: Symposium JJ – Nondestructive Characterization of Materials in Aging Systems , 1997 , 69
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

1. Kinloch, A.J., Durability of Adhesives, edited by A.J., Kinloch (Applied Science Publishers, London, 1983).Google Scholar
2. Cotter, J.L., Developments in Adhesives - 1, edited by Wake, W.C. (Applied Science Publishers, London, 1977).Google Scholar
3. Matthews, R., The Times, London (February 9, 1988).Google Scholar
4. Jones, T.S., Polansky, D., NDT International 14, 277 (1988).Google Scholar
5. Rokhin, S.I., Adhesive Joints, edited by Mittal, K.L. (Plenum Press, New York, 1984).Google Scholar
6. Rokhin, S.I., J. Acoust. Soc. America 73, 1619 (1983).Google Scholar
7. Rose, J.L., Rajana, K., Hansch, M.K.T., J. Adhesion 50, 71 (1995).Google Scholar
8. Kranbuehl, D., Developments in Reinforced Plastics- 5 (Elseveir Applied Science, New York, 1986), p. 181.Google Scholar
9. Kranbuehl, D., Kingsley, P., Hart, S., Hasko, G., Dexter, B., Loss, A., Polym. Compos. 15, 297 (1994).Google Scholar
10. Johari, G., Mangion, M.B.M., Macromolecules 23, 3687 (1990).Google Scholar
11. Musil, J., Zacek, F., Microwave Measurements of Complex Permittivity by Free Space Methods and their Applications, (Elseveir Applied Science, Amsterdam 1986).Google Scholar
12. Joshi, S.B., Pethrick, R.A., Hayward, D., British Journal of NDT 35(3), 130 (1993).Google Scholar
13. Li, Zhi-cheng, Joshi, S.B., Hayward, D., Gilmore, R. and Pethrick, R.A., NDT&E International 30, No.3, 151 (1997).Google Scholar
14. Hayward, D., Hollins, E., Johncock, P., McEwan, I., Pethrick, R.A., Polymer 38, 1151 (1997).Google Scholar
15. Pethrick, R.A., Hayward, D., Jeffreys, K., Affrossman, S., Wilford, P., J. Materials Sci. 31, 2623 (1996).Google Scholar
16. Umeya, K., Kanno, T., Bull. Chem. Soc. J. 46, 1660 (1973).Google Scholar
17. Li, Zhi-cheng, Hayward, D., Gilmore, R., Pethrick, R.A., J. Materials Sci. 32, 879 (1997).Google Scholar
18. Banks, W.M., Dumolin, F., Hayward, D., Pethrick, R.A., Li, Zhi-cheng, J. Phys. D 29, 233 (1996).Google Scholar