Creep phenomena in FRP materials

In this paper the authors present the results of a creep test programme on several glass fibre reinforced polymers (GFRPs) laminates and their constituent phases (matrix and fibre), subject to different stress values under constant environmental conditions. A validation of the mechanical model, recently formulated by the authors, capable of predicting the viscous properties of a FRP laminate starting from those of the single phase is also developed by matching the predicted behaviour with the experimental one recorded in the creep tests