Optimal control of accelerator concentration for resin transfer molding process

Sun K. Kim, Dae Hwan Kim, Isaac M. Daniel*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Resin cure following mold filling is an essential element in resin transfer molding. To fabricate a composite part with high dimensional stability and minimize residual stress, uniform resin cure should be achieved. This study considers a three-part resin system composed of epoxy, hardener and accelerator. The cure kinetics can be controlled by the accelerator concentration at the injection gate. A numerical method that can predict degree of cure distribution based on accelerator concentration at the gate was proposed. The degree of cure distribution is obtained by solving the resin flow, heat transfer, accelerator concentration and cure problems sequentially. Utilizing this numerical method, an optimal variation of accelerator concentration during mold filling was sought by solving a constrained optimization problem. The effect of accelerator control on degree of cure distribution was investigated and its validity was examined for two different geometries.

Original languageEnglish (US)
Pages (from-to)3747-3754
Number of pages8
JournalInternational Journal of Heat and Mass Transfer
Volume46
Issue number20
DOIs
StatePublished - Sep 2003

Keywords

  • Accelerator concentration
  • Degree of cure
  • Resin transfer molding

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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