Abstract
The tensile static and fatigue tests for the conical shaped FRP joints using polymeric adhesives (FRP joint）were conducted at wide ranges of loading rate and temperature. The time and temperature dependencies on the static and fatigue strengths of the FRP joint were investigated from the viewpoint of the viscoelastic behavior of the matrix resin of FRP rod. The static and fatigue strengths of the FRP joint and these fracture modes are remarkably dependent on time to failure and test temperature. The time-temperature superposition principle for the viscoelastic behavior of the matrix resin of FRP rod holds for the static and fatigue strengths of the FRP joint. Therefore, the master curves of static and fatigue strengths for the FRP joint can be obtained, and this fact enables us to estimate the fatigue strength at an arbitrary loading rate, temperature and number of cycles to failure.
