A Study on Resin Flow through a Multi-layered Preform in Resin Transfer Molding

수지이송성형시 다층 예비성형체 내부에서의 수지유동 및 투과 계수에 관한 연구

  • Seong, Dong-Gi (School of Materials Science and Engineering, Seoul National School) ;
  • Youn, Jae-Ryoun (School of Materials Science and Engineering, Seoul National School)
  • Published : 2001.05.01

Abstract

When the preform is composed of more than two layers with different in-plane permeability in resin transfer molding, effective average permeability should be determined for the flow analysis in the mold. The most frequently used averaging scheme is the weighted average scheme, but it does not account for the transverse flow between adjacent layers. A new averaging scheme is proposed predicting the effective permeability of the multi-layered preform, which accounts for the transverse flow effect. The new scheme is verified by measuring the effective permeability of the multi-layered preforms and the difference in each flow front position.

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