被着体に擬似等方性CFRPを用いた単純重ね合わせ接着継手の曲げ強度特性

抄録

Recently, lightening and high strengthening of the structural materials have been expected in the world. Carbon Fiber Reinforced Plastic, i.e. “CFRP” has superior material properties which is lighter and stronger than aluminum alloy, steel and so on. The purpose of this study is to clarify the flexural strength of adhesively bonded single-lap joints with Quasi-isotropic CFRP as both adherends. In this study, we used two ways. First, 3-points bending load tests were carried out to measure the failure loads for sixteen joint types. Second, we analyzed to investigate the stress and deformation state of sixteen joint types subjected to 3-points bending moment by finite element method. From these approaches, the failure loads of various joint specimens and then maximum crosshead displacements were obtained. The effects of lay-up patterns of quasi-isotropic CFRP on the joint strengths were discussed by reference to analytical and experimental results.