Mechanical behavior of unidirectional glass fibers reinforced Resol/VAC-EHA Composites at different volume fraction of fibers

Glass fibers reinforced Resol/VAC-EHA Composites were fabricated at different volume fraction of fibers to determine the mechanical behavior. Resol solution was blended with vinyl acetate-2-ethylhexyl acrylate (VAc-EHA) resin in an aqueous medium with varying volume fraction of glass fibers. The role of fiber/matrix interactions in glass fibers reinforced composites were investigated to predict the stiffness and damping properties and their different mechanical behavior was compared with pure Resol and Resol/VAC-EHA blend. In order to study the static and dynamic response of Resol, Resol/VAC-EHA blend, and glass fibers reinforced composites, a multiquadric radial basis function (MQRBF) method was developed. MQRBF was applied for spatial discretization and a Newmark implicit scheme was used for temporal discretization. The discretization of the differential equations generates a larger number of algebraic equations than the unknown coefficients. To overcome this ill conditioning, the multiple linear regression analysis, which is based on the least square error norm, was employed to obtain the coefficients. Simple supported and clamped boundary conditions were considered. Numerical results were compared with those obtained by other analytical methods.