画像相関法を利用した接着接手の混合モード破壊挙動解析

抄録

This paper intends to develop the evaluation method for J-integral on adhesive joint. Recently, for weight reduction, different kinds of materials are used in automotive structures and conventional spot welding can not be applied to joining different kinds of materials. Adhesives are candidate for joining different kinds of materials, but it is necessary to ensure the reliability of adhesive joints under vibration, crash of automobile and so on. In this paper, evaluation method of J-integral for adhesive joints are developed. Displacements and strains around crack tip of adhesive joints were measured by Digital Image Correlation (DIC) method and J-integral were calculated for both Aluminum alloy (A5052) and adhesive joint. The results show that experimental result is roughly agree with theoretical estimation results.