Original Article
  • Experimental Study of the Microvoids Formation and Transport in the Vacuum Assisted Resin Transfer Molding Process
  • Se-Won Eun, Woo-Il Lee
  • Vacuum Assisted Resin Transfer Molding 공정에서의 Microvoids 형성과 이동에 관한 연구
  • 은세원(한국항공우주연구원 우주발사체 사업단 구조그룹), 이우일(서울대학교 기계항공공학부 )
Abstract
In RTM process, the content of microvoids can be critical due to the fact that the presence of microvoids degrades mechanical properties on the fabricated composite parts. The present paper proposes an experimental method of observation in void formation and transport. VARTM processes are performed under observation with a digital video camera and then the microvoid formation in the flow front and transport are videotaped and observed both in channels and tows. The obtained data are used in the mathematical model in order to determine the model constants. Experimental results and expected results from the mathematical model show a good agreement with each other.

In RTM process, the content of microvoids can be critical due to the fact that the presence of microvoids degrades mechanical properties on the fabricated composite parts. The present paper proposes an experimental method of observation in void formation and transport. VARTM processes are performed under observation with a digital video camera and then the microvoid formation in the flow front and transport are videotaped and observed both in channels and tows. The obtained data are used in the mathematical model in order to determine the model constants. Experimental results and expected results from the mathematical model show a good agreement with each other.

Keywords: microvoid, vacuum assisted resin transfer molding( VARTM), capillary number, void transport

Keywords: 마이크로보이드, 진공어시스티드 알티엠, 모세관넘버, 보이드 이동

This Article

  • 2003; 16(6): 10-15

    Published on Dec 31, 2003

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