Proper

Abstract

A research area of transportation machine is currently pursuing the means to reduce the gas emission in accordance with the environmental regulation. As reducing the gas emission and increasing the range of electric automotive transportation machines, the weight reduction can be applied. Researches are being carried out with the fiber reinforced plastic (FRP) to reduce the weight of mechanical structures. However, although the extensive range of researches has been conducted on the strength and rigidity of FRP materials, there is inadequate research on the bonding and adhesive types of FRP materials. Bonding method using adhesives is good at FRP materials with the characteristics of these materials. However, there is a lack with the low level of reliability of researches on the adhesive method, and there are difficulties in applying this method in actual industrial fields. In addition, the research on fracture behavior that occurs in the bonded interface takes a long time and many companies are not conducting the researches due to concerns for the trend changes in lightweight materials. In this study, the analytic research on tearing fracture in the bonded interface using TDCB with the gradient angle of 6° was executed. Short-fiber glass fiber reinforced plastic (GFRP) and woven type carbon fiber reinforced plastic (CFRP) were used as the materials for analysis.