Effects of Molding Condition on Surface Unevenness of GFRP Composites in Compression Molding

GFRP 복합재료의 압축성형에서 표면요철에 미치는 성형조건의 영향

  • Kim, Hyoung-Seok (Dept. of Advanced Parts and Materials Engineering, Chosun Univ. Graduate School) ;
  • Kim, Jin-Woo (Center for NDE, Iowa State Univ.) ;
  • Kim, Yong-Jae (Dept. of Electrical Engineering, Chosun Univ.) ;
  • Lee, Dong-Gi (Dept. of Mechatronics Engineering, Chosun Univ.)
  • 김형석 (조선대학교 대학원 첨단부품소재공학과) ;
  • 김진우 ;
  • 김용재 (조선대학교 전기공학과) ;
  • 이동기 (조선대학교 메카트로닉스공학과)
  • Received : 2010.05.14
  • Accepted : 2010.08.16
  • Published : 2010.11.01


We have investigated the unexpected phenomena on the surface of molded GFRP composites. The major cause of the unevenness, as a result of which the surface becomes rough, is a shrinking of the matrix in the process of holding pressure and cooling temperature. The higher holding pressure load in a molding process and the lower demolding temperature in an annealing experiment, the better GFRP composites moldings improved its appearance. In addition, by taking the holding pressure and demolding temperature into consideration, we evaluate the process that causes the surface unevenness and the variation in the fiber projection height.


Glass-Fiber-Reinforced-Plastic Composite Materials;Demolding Temperature;Mold Temperature;Holding Pressure Load;Center-Line-Average-Height;Waviness Profile


Supported by : 조선대학교


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