2021 Volume 77 Issue 2 Pages I_371-I_380
In the civil engineering field, the research on reinforcement and repair using FRP with excellent characteristics is actively carried out. In addition, recently, a study on the repair of damaged FRP with FRP bonding has also been carried out. In the adhesive bonding between FRPs, the fiber near the surface of FRP as a main member might break near the bonding end. Farther, the debonding on the adhesive layer is one of the concerns for FRPs joint. However, there is no theoretical study on the fracture of adhesive bonding between FRPs. In this study, the mechanical properties of fiber fracture and adhesive flaking, which are factors of fracture, were clarified from the theoretical stress analysis method. As a result, it was found that by reinforcing FRP with FRP, a larger strain acts on the fiber nearest the surface in the FRP members than that without reinforcement FRP members.