The Effects of Shear and Peel Stress Distributions on the Behavior of Structural Adhesives in Tubular Composite Joints

Abstract

This chapter is concerned with the study of peel and shear stress distributions in adhesively bonded composites under external loads. It includes the design aspects of an adhesively bonded joint including the effects of mechanical and geometric properties of the adherends, type of adhesively bonded joint, and the shapes of a few adhesively bonded joints on stress distribution in the adhesive layer of tubular joints. Furthermore, the application of torsional and axial loads on the induced stresses is examined to introduce their effects on the adhesive stresses. Additionally, the effect of local damages in terms of voids or debonds in the adhesive layer as well as delamination in the composite adherends are discussed to determine their adverse effect in terms of adhesive shear and peel stresses on the joint performance. Moreover, the use of hybrid joints is surveyed to explore the benefits of combined mechanical and bonded joints on the adhesive layer performance. In contrast to the linear analysis, the nonlinear analysis is also introduced to seek the effect of adhesive nonlinear behavior on the induced stresses, affecting the overall joint performance. Furthermore, a short survey is presented on design aspects of tubular joints to better understand the effect of geometric and mechanical properties of the adhesive layer and adherends on the overall performance of the tubular joints.