@article{oai:kyutech.repo.nii.ac.jp:00005503,
 author = {Noda, Nao-Aki and 野田, 尚昭 and Li,  R and Sano, Yoshikazu and 佐野, 義一 and Takase, Yasushi and 高瀬, 康 and Takaki,  R and Miyazaki,  T},
 issue = {1},
 journal = {Journal of Physics: Conference Series},
 month = {May},
 note = {The testing method of adhesive strength of lap joint is prescribed in Japanese Industrial Standard (JIS K6850). However, it has been reported that the strength of double lap joint (DLJ) is about two times larger than the one of single lap joint (SLJ). Therefore, suitable testing method has been required from industries. In this study, the equivalent conditions of strength for SLJ and DLJ are investigated in terms of the intensity of singular stress field (ISSF) appearing at the interface end. First, in order to minimize the bend effect for SLJ, the effect of the specimen geometry on ISSF and deformation angle at the interface corner is considered under the same adhesive geometry and load P. It is found that the minimum ISSF of SLJ can be obtained when the adherend thickness t1 is large enough, and the deformation angle at interface corner is also smallest when adherend thickness t1 is large enough. Therefore, it is necessary to use the specimen with thicker adherend thickness. Then, the equivalent conditions of strength for SLJ and DLJ is investigated by changing adherend thickness. The results show that the strength of the DLJ in JIS (t1=1.5mm) can be obtained by using the SLJ with adherend thickness t1=7mm. When the adherend thickness t1≥25mm, the strength of SLJ is nearly equal to that of DLJ., 6th International Conference on Fracture Fatigue and Wear, 26–27 July 2017, Porto, Portugal},
 pages = {012006-1--012006-6},
 title = {How to obtain the adhesive strength for double lap joint by using single lap joint},
 volume = {843},
 year = {2017},
 yomi = {ノダ, ナオアキ and サノ, ヨシカズ and タカセ, ヤスシ}
}