||Evaluation of Adhesive Strength Based on the Intensity of Singular Stress Field of Single Lap Joint
Li, R. ,
Noda, N.A. ,
Sano, Y. ,
Miyazaki, T. ,
Iida, K.Takase, Y.
International Journal of Fracture Fatigue and Wear
103 , 2016-08 , Laboratory Soete – Ghent University
In this study, the adhesive strength for single lap joint is investigated based on the intensity of singular stress field. First, the critical intensity of singular stress at the adhesive dissimilar joint is calculated by using finite element method (FEM) based on the experimental result. It is found that the adhesive strength can be expressed as the critical intensity of singular stress field. Then, a suitable evaluation method of adhesive strength is investigated focusing on the intensity of singular stress field. The effect of specimen geometry on the intensity of singular stress is considered. The results show that the intensity of singular stress field decreases with increasing the adherend thickness, the minimum intensity of singular stress can be obtained when the adherend thickness is large enough. The results of the deformation angle at the interface corner edge show a similar trend as in intensity of singular stress field, and the minimum deformation angle can be obtained when the adherend thickness is large enough. The usefulness of the method is investigated focusing on the deformation angle at the interface corner edge.
Proceedings of 5th International Conference on Fracture Fatigue and Wear, FFW 2016, 24-26 August 2016, Kitakyushu, Japan