Investigations of joint strength & fracture parameter of adhesive joint: A review

Over the past few decades, adhesive joints have become increasingly popular. Adhesive joint has attracted noteworthy consideration in various industries such as aerospace, marine as a replacement for traditional joining methods including riveting, bolting and welding. In adhesive joint, the role of interface geometry plays a vital role for strength of adhesive joint. Non-flat adherend bonded by adhesive contributes significantly to the increase the strength of adhesive joint. The current comprehensive review study's objective is to evaluate several strategies for improving adhesive joint strength along with decreasing the stress concentrations. These strategies are explored in terms of different geometric design, loading condition and material arrangement. The current review also involved different mechanical and fracture testing experimental methods for the adhesive joint which are used to compute fracture parameters of the adhesive joint and also to understand various advantages and disadvantages of various method. Lastly, the paper is intended to provide some thought-provoking guidelines which can be useful for both research and industry are presented.