Failure Analysis of Laminates Single-Lap Adhesive Joints under Uniaxial Tensile Loading

Yin Huan Yang

doi:10.4028/www.scientific.net/AMR.490-495.2201

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 490-495Failure Analysis of Laminates Single-Lap Adhesive...

Failure Analysis of Laminates Single-Lap Adhesive Joints under Uniaxial Tensile Loading

Abstract:

Tension tests on three different types of T700/EXOPY unidirectional laminates single-lap adhesive joints under uniaxial tensile loading were performed and effect of adherend thickness and spew fillets on strength of single-lap adhesive joints were analyzed in this paper. According to the experimental results, it is found that joint strength was not linear with the adherend thickness and much affected by spew fillets in overlap ends. At the same time, finite element simulations are carried out to analyze the peel/shear stress fields along joint interfaces and the intermediate layer of adhesive. The simulation results show that it is the main factor to leading to joint failure that the maximum peel/shear stress is occurred at overlap area edges and peel/shear stress of joints with spew fillet at the overlap area edges is less than that of joints with no spew fillet. Good agreements between the present simulations and the experimental results are found.