Abstract
Recently, patch bonding repair method has been applied to the deteriorated steel structures. However, the bonding patch repair method is still concerned about the brittle debonding of patch plate. Generally, a tensile shear bond strength given by the single-lap bonded specimen with 1.6mm steel plates is often used for the quality control of adhesives. However, it is known that the tensile shear bond strength of single-lap joint cannot be applied for the evaluation of debonding of patch plate.
In this study, to employ the single-lap joint used for the quality control of adhesives for the evaluation of debonding of patch plate, stresses introduced in the adhesive of single-lap joint were given by using the eigenvalue analysis and the geometric nonlinear beam theory. Furthermore, it was revealed that the test results are scattered in the same region of that given by the large size specimens by the applying the principal stress of adhesive ends.
