Stress-singularity-parameter approach for evaluating the adhesive strength of single-lap joints

Abstract

In a previous paper, we presented a new adhesive-strength evaluation method which uses two stress-singularity parameters. Here this method is applied to single-lap joints which are generally used as adhesive-strength test specimens. Using this method, the relationships between adhesive-strength to lap length, adhesive layer thickness, substrate thickness, and bonding edge angle, are analyzed. The analytical results coincide well with the estimated results based on maximum stresses in adhesive layers.