A STUDY OF THE NON-LINEAR BEHAVIOUR OF ADHESIVELY-BONDED COMPOSITE ASSEMBLIES

摘要

The objective of this study is to define a reliable tool for dimensioning of adhesively bonded assemblies, particularly for marine and underwater applications. A modified Arcan fixture, suited for the study of the behaviour of bonded metal-metal assemblies, was developed in order to focus on the analysis of the behaviour of the adhesive in thin films. To analyze the kinematics of the deformation of the adhesive joint non-contact extensometry techniques were employed. Thus various characteristics of the non-linear behaviour of the adhesive were observed. The first results obtained for mixed assemblies (steel, aluminium, composite substrates) indicate that the "intrinsic" behaviour of the adhesive is obtained using the proposed procedure. Furthermore, quality controls by DSC, and studies of curing by DMA have been performed to verify the bonding procedure.