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

Year 2019, Volume: 3 Issue: 3, 83 - 87, 20.09.2019

Salih Akpınar

https://doi.org/10.26701/ems.566773

Cited By: 7

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 (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 (CBT) and the Standard Test Method (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

Supporting Institution

TÜBİTAK

Project Number

114M408

Thanks

This study was financially supported by The Scientific and Technological Research Council of Turkey–TUBITAK through the Project no. 114M408.

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