Temperature dependence of moisture diffusion in woven epoxy-glass composites: A theoretical and experimental study

The diffusion of moisture in woven glass fiber/epoxy resin composite is investigated theoretically and experimentally. Experiments are performed on a neat epoxy material glass-epoxy composites at three distinct temperatures. As expected, the temperature highly affected transport moisture. For data analysis, new homogenized model based geometry weave adopted. Assuming steady-state process Arrhenius law dependence between diffusivity temperature, very good agreement found theoretical coefficients experimental data. To complete analysis extend it to transient behavior, 3D finite element framework built. An acceptable but not perfect mass uptake reported as discrepancies, which due effects captured by analytical model, observed. Reasons for discrepancies limitations approach discussed provided. It concluded that homogenization can be used predict only provides rough estimate time-varying uptake. • Experimental evaluation epoxy-glass specimens. Theoretical prediction from constituents’ properties. Analytical homogenizing validation.