接着継手の疲労強度推定と信頼性評価

抄録

The fatigue test data of adhesive bonded butt, lap and tube joints under the same adhesive condition have been collected. The fatigue lives of these joints depend on the shape and size of adhesive joints, i.e. the lap length, adherend thickness and so on, because the stress distribution of adhesive layer varies with such shape parameters of adhesive joints. Hence, in this study the collected S-N data were tentatively standardized by the maximum stress in the adhesive layer obtained by the finite element method. Then the standardized fatigue strength was compared with that of butt joints. The results indicate that the fatigue strength of lap and tube joints can be estimated based on that of the butt joints of the same adhesive thickness.
Furthermore, the statistical analysis was conducted in order to evaluate reliability of these estimated values.