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This paper presents strength test results of adhesive joints of epoxy polimer composites with dissimilar adherends. The analysis was conducted on epoxy-glass, epoxy-aramid and graphite-epoxy composites forming adhesive joints with dissimilar adherends. Epoxy-aramid adhesive joint strength test results allow to conclude that when combined with other composites of the same type, however. Fomried with a different laminate, epoxy-aramid composites produce higher strength than when combined with a different type of composite. SImilarly in strength tests of graphite-epoxy composites, higher strength values were produced by joining the same composite type differing in the type of laminate used to produce it and, in this particular case, in thickness. It can be, therefore, seen that in the majority of the analysed configurations, higher strength values are obtained when the same type of composite, in terms of matrix, yet differing in specific characteristics, rather than by joining different composites. It appears that configurations comprising the same composite promote beneficial adhesive properties, which in tum contributes to higher joint strength, as compared to configurations of different composites.
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