Effect of Spew Fillets on Strength of Single-Lap Adhesive Composites Joints

Yin Huan Yang; Lin Zhi Wu; Ying Guo; Zhen Gong Zhou

doi:10.4028/www.scientific.net/AMR.239-242.810

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 239-242Effect of Spew Fillets on Strength of Single-Lap...

Effect of Spew Fillets on Strength of Single-Lap Adhesive Composites Joints

Abstract:

Tension tests on T700/EXOPY unidirectional laminates single-lap joints of spew fillets at overlap ends under uniaxial tensile loading are performed in the presented paper. Two different types of joints are designed and analyzed in order to study effect of spew fillets and no spew fillets at overlap ends on strength and failure mode of single-lap adhesive joints. According to the results, failure mode of two joints are characterized and analyzed. Shear stress—strain curves are analyzed and compared. At the same time, a finite element simulation is carried out to analyze the peel/shear stress fields inside the joint interface. It is found that joint strength was much affected by spew fillets in overlap ends. Nerveless, joints strength is decreased with the increasing thickness of spew fillets in overlap ends. The computational results are in good agreement with the experimental values.