FRP is widely used because of its superior characteristics as a structural material. But such characteristics of FRP as anisotropy, heterogeneity and non-weldability sometimes become weak points. Namely, when FRP is used for a structure, the joint parts become a trigger of fracture, and the strength of structure is decided by these joint parts in the majority of cases. Therefore, the development of a new joint method for FRP is strongly needed.
In this paper, the tensile creep behavior of a conical shaped joint system is investigated, which has been developed recently. The creep deformation and creep rupture of the tensiled joint system were measured at various temperatures. It is reveal that these creep deformation and creep rupture during long term can be predicted by using a reciprocation law between time and temperature, which holds for the viscoelastic behavior of the bonding resin and matrix resin of FRP.
