Strength and Interface Adhesion Properties of in-Plane Shear Loaded Thick Adhesive Joint

Abstract

This paper addresses the quality of the interface bonded joints in layers of timber elements. The shear performance was studied to assess the suitability of adhesive to bond timber with different thickness of glueline and timber densities. Since there is absolute test method in establishing the shear strength of the surface bonds between layers timber elements, two test methods were used namely Thick Adherend Shear Test [TAST] and Lap Shear Test. The adhesived used is Sikadur-30 and timber used are Sesendok, Bintangor and Kempas with average densities 400-600kg/m3, 600-800kg/m3 and 800-1000kg/m3 respectively. Obtained results suggest that the interface stress distribution are related to the thicknesses of adhesive and densities of timber.

Investigation of the Tensile Strength of Adhesive-Bonded Steels Using Surface Treatments

“…The last theory of adhesion is the weak interface theory [25]. This theory was first described by Bikerman, who argued that when the bond appears to have failed at the interface, it is usually a weak interface layer cohesive failure in reality [26]. This theory states that bond failure due to interface failure is actually very rare.…”