Fatigue behaviour of single overlap joints on steel and pre-painting steel with epoxy adhesive
DOI:
https://doi.org/10.3989/revmetalm.2008.v44.i4.120Keywords:
Adhesive joint, Epoxy, Surface Finís, FatigueAbstract
The mechanical properties of adhesive joints depend not only on the nature and properties of the adhesives; there are many parameters which influence the behaviour of the adhesive joints. Some of more significant parameters are: the surface conditions of materials, area and thickness of adhesive layer, compatibility of the design, applying sequence, chemical properties of surface and the surface treatments of substrates prior to be bonded. The mechanical resistance of adhesive joints is interrelated to the fracture process depended on cohesion-adhesion mechanism. The aim of this paper is analyse the influence of two different surfaces on the fatigue behaviour of epoxy adhesive joints. The results show that chemical compatibility of adhesive and paint improve adhesion of joints and the mechanical resistance against static and dynamic loads. The fatigue limited has been obtained for joints with both surfaces.
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