Numerical and experimental analysis of the resin transfer molding process

다국어 초록 (Multilingual Abstract)

The objective of this work is to propose a procedure to simulate the flow in the LCM (Liquid Composites
Molding) processes by finite difference discretization in a curvilinear coordinate system adapted to the
shape of the saturated zone. The numerical results obtained are compared with experimental results obtained
by an experimental device elaborated at our laboratory. It allows to realize linear and radial injections for different
porosities and to observe the flow front kinetics. Numerical and experimental results are then compared
with those of the literatures and excellent agreements are noticed. Finally, we suggest a concept of the capillary
number to explain the variations of the permeability obtained for pressure values lower than 0.25 Bar.

참고문헌 (Reference)

1 Foley, M. F., 326-340, 1991

2 Ahn, K. J., "Simultaneous measurement of permeability and capillary pressure of thermosetting" 12 (12): 146-152, 1991

3 Hattabi, M., "Simulation du front d’écoulement dans les procédés de moulage des composites liquides, Comptes Rendus de Mécanique" Elsevier 585-591, 2005

4 Kim, B. Y., "Optimization of filling process in RTM using genetic algorithm" 12 (12): 83-92, 2000

5 Pillai, K. L., "Numerical simulation of unsaturated flow in woven fiber preform during the resin transfer molding process" 19 (19): 71-80, 1998

6 Shojaei, A., "Numerical simulation of three-dimensional mold filling process in resin transfer molding using quasi-steady state and partial saturation formulations" 62 : 861-879, 2002

7 Dimitrovova, Z., "Mesolevel analysis of the transition region formation and evolution during the liquid composite molding process" 82 : 1333-1347, 2004

8 Weitzenböck, J. R., "Measurement of threedimensional permeability" 29A (29A): 159-169, 1998

9 Liu, X. L., "Isothermal flow simulation of liquid composite molding" 31 (31): 1295-1302, 2000

10 Lundström, T. S., "In-plane permeability measurements: a Nordic round-robin study" 31 (31): 29-43, 2000

11 Saouab, A, "Génération de maillage adaptatifs par une méthode variationnelle" University of the Rouen 1991

12 Young, W. B., "Flow simulation in molds with preplaced fiber mats" 12 (12): 391-403, 1991

13 Wong, P. Z., "Flow in porous media: permeability and displacement patterns" 19 (19): 32-38, 1994

14 Gouley, G., "Etude des écoulements dans les procédés d’injection de résine sur renfort" University of sciences and technology of Lille Flandres Artois 1995

15 Lee, G. W., "Effects of surface modification on the resin-transfer moulding (RTM) of glass-fibre/unsaturated-polyester composites" 62 : 9-16, 2002

16 Patel, N., "Effects of fiber mat architecture on void formation and removal in liquid composite molding" 16 (16): 386-399, 1995

17 Gauvin, R., "Comparaison between numerical and experimental results for mold filling in resin transfer molding, Plastics" 19 (19): 151-157, 1993

18 Hattabi, M., "Analysis flow during on-line injections and radial application in the measure of permeability" 24 : 1909-1920, 2005

19 Dimitrovova, Z., "Analysis and characterization of relative permeability and capillary pressure for free surface flow of a viscous fluid across an array of aligned cylindrical fibers" 245 (245): 325-337, 2002

20 Bruschke, M. V., "A finite element/control volume approch to mold filling in anisotropic porous media" 11 : 398-405, 1990