Bai, YKeller, T2007-06-222007-06-222007-06-22200710.1016/j.compositesa.2007.06.010https://infoscience.epfl.ch/handle/20.500.14299/9284WOS:00025094650000811261A new model is proposed to estimate the post-fire stiffness of FRP composites after different fire-exposure times. The model considers the E-modulus recovery of the material if cooled down from temperatures between glass transition and decomposition during the fire. Furthermore, based on this model, the through-thickness temperature gradients and remaining resin contents (RRC) can be calculated. Post-fire stiffness estimated by the new model and refined two- and three-layer post-fire models based on temperature or RRC criteria was compared with experimental results. A good agreement of calculated and measured post-fire stiffness of two full-scale cellular GFRP panels subjected to mechanical and thermal loading was found for fire-exposure times up to 2 h.[All rights reserved Elsevier].Fiber reiforced plasticsGlass transitionResinstext::journal::journal article::research article