Abstract: The simulation technique of RTM process has been developed which is based on control volume/finite element method (CV/FEM). The resin flow front and pressure profile of RTM process for the flat structure products are presented. The quantitative inverse ratio correlation both for injection pressure and permeability with filling time is revealed under constant injection pressure condition. The quantitative linear relationship between resin viscosity and filling time is also analyzed. The influences of injection gate design are discussed in the research. The simulation results of filling time are in good agreement with those of the experiments. The simulation technique developed is featured by its easy use and affordable application for general composite industries.

Key words: composites, RTM, simulation, r esin, permeabilit y