The Effect of Adherend Thickness and Width on Fracture Behavior in Adhesively bonded Double Cantilever Beam Joints

Authors : Salih AKPINAR

Pages : 83-87

Doi:10.26701/ems.566773

View : 19 | Download : 8

Publication Date : 2019-09-20

Article Type : Research Paper

Abstract :In recent years, bonding joints are the most effective way to successfully and safely combine different materials in sectors such as automotive, aircraft and aerospace industries. In particular, the combination of composite materials, such as rivets, welds, non-conformity of traditional methods have been made use of bonding joints. The fracture behavior of the adhesive is important in adhesively bonded. In the present study, the fracture behavior of the adhesive was investigated experimentally under Mode-I loading of Double Cantilever Beam insert ignore into journalissuearticles values(DCB); joints obtained by using materials of different width and thickness. AA2024-T3 aluminum is used as the adherend and two component Araldite 2015 tough adhesive is used as adhesive. The fracture progression during the experiment was measured with a high-speed camera and the displacement was measured by a video extensometer. As a result; when the fracture energies of the experimentally obtained adhesive are examined, the fracture energy of the joint changes when the width and thickness of the adherend changes. In addition, the fracture energies of the joint obtained with the Corrected Beam Theory insert ignore into journalissuearticles values(CBT); and the Standard Test Method insert ignore into journalissuearticles values(SBT); are compared, and the fracture energy obtained with CBT is more accurate considering the elastic rotation in the adherend.
Keywords : Adhesive joints, Fracture mechanics, Double cantilever beam test, Corrected beam theory, Standard test method