Dielectric non-destructive examination of ageing of adhesively bonded structures

Doyle, G.T. and Pethrick, R.A. and Banks, W.M. and Crane, R.L. (2002) Dielectric non-destructive examination of ageing of adhesively bonded structures. In: UNSPECIFIED.

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Abstract

This paper describes the use of dielectric spectroscopy as a nondestructive method for monitoring first solvent ingress at elevated temperatures within aluminum adhesively bonded joints, and second, water uptake within carbon-fiber reinforced plastic (CFRP) bonded joints. Dielectric measurements were carried out in both frequency and time domains, allowing for changes in the dielectric permittivity and loss to be calculated.