Viscous behaviour of FRP materials: a mechanical model

In this paper the authors present a mechanical model capable of predicting the viscous behavior of FRP laminates in the field of linear viscoelasticity starting from that of the matrices and fibers. It is based on a micromechanical approach that assumes there is a perfect adhesion between the matrix and fiber. The long term behavior of the phases is described through the four parameters rheological laws. A validation of the model is also developed by matching the predicted behaviors with the experimental ones available in literature.