Mathematical modelling of macro- and micro-infiltration in resin transfer moulding (RTM)

摘要: Abstract A mathematical model is proposed to describe the macro- and micro-infiltration through reinforcements of bimodal porosity distribution in resin transfer moulding. The based on Darey's law incorporating mechanical, capillary vacuum pressures covers three modes infiltration. Permeabilities are calculated at micro-levels. numerical analysis presented where each location flowrate split between possible types flow basis mass balance a combination permeability magnitude local potential. Parametric computational studies carried out study Newtonian fluid woven cloths following parameters varied: fibre volume fraction, tow diameter injection pressure. Predicted variables include micro- macro-infiltration times apparent global permeability. latter was found depend pressure, regime relatively low pressures, variations also depended fabric architecture fraction.