Abstract
The following conclusions are obtained in this report. (1) The stress decreasing rate in the S-N diagram for the elastic bonding butt joint is smaller than that for the epoxy resin joint. (2) The effect of adhesive area on fatigue strength cannot be seen.(3) Stress concentration are observed at the interface edge area with increasing thickness of adhesive layer in tensile loading but no stress concentration in torsion.(4)The mean value of principal stress distribution at the interface edge area is found to be the most dominant factor of adhesive strength for the elastic bonding joint.
