Experimental study to increase the strength of the adhesive bond by increasing the surface area arrangement

Abstract

Abstract This research represents an experimental and numerical tensile study to investigate the effect of adding epoxy and both sides of two specimens on the shear stress at which the failure of the bond occurs. Also, the effect of the of epoxy bond arrangements on the toughness and the area of contact were investigated. Fifteen specimens in three arrangement s are used for the tensile test. In the first arrangement (case 1) the epoxy bond is placed in between the steel specimens. In the second arrangement (case 2), the epoxy bond is placed between the steel specimens and it extended 5 cm outward from both sides. In the third arrangement, the epoxy bond is placed between the steel specimens and it extended 10 cm outward from both sides. These arrangements used to increase the contact area of the bond. The single Lap – Simple bond type is used for this study. The experimental and numerical results show a god agreement. The arrangement of the epoxy bond is found to have a strong impact on the mechanical behavior. The shear stress increase by 500 % in case of arrangement 3.