Measurement of the Fiber Orientation on Weld-Line Parts for Injection Molding of Fiber Reinforced Polymeric Composites

섬유강화 고분자 복합재의 사출성형에 있어서 웰드라인부의 섬유배향측정

  • 김혁 (조선대학교 대학원 정밀기계공학과) ;
  • 강명구 (조선대학교 대학원 정밀기계공학과) ;
  • 최유성 (조선대학교 대학원 정밀기계공학과) ;
  • 이동기 (조선대학교 공과대학 기계공학부) ;
  • 한길영 (조선대학교 공과대학 기계공학부) ;
  • 김이곤 (국민대학교 공과대학 기계자동차공학부)
  • Published : 2000.11.01

Abstract

Injection molding is a very important industrial process for the manufacturing of plastics objects. During an injection molding process of composites, the fiber-matrix separation and fiber orientation are caused by the flow of molten polymer/fiber mixture. As a result, the product tends to be nonhomogeneous and anisotropic. Hence, it is very important to clarify the relations between separation· orientation and injection molding conditions. So far, there is no research on the measurement of fiber orientation using image processing. In this study, the effects of fiber content ratio and molding condition on the fiber orientation-angle distributions are studied experimentally. Using the image processing method, the fiber orientation distribution of weld-line parts in injection-molded products is assessed. And the effects of fiber content and injection molding conditions on the fiber orientation functions are also discussed