Abstract
The fracture strength of GFRP/stainless-steel adhesive joints was studied analytically and experimentally. Firstly, the stress distributions near the delamination edge were analyzed by FEM. The results showed that the shear stress and the normal stress distributions near the bonding edge can be expressed by two stress singularity parameters. Secondly, to measure the delamination initiation load, tensile shear tests were carried out on double lap joints and embedded joints. The experimental results showed that the delamination strength depends mainly on the shear-stress-singularity-intensity. It is therefore concluded that the shear stress dominates the delamination strength of GFRP/stainless-steel adhesive joints.
