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단섬유강화 고분자 복합재료의 압축성형에 있어서 섬유배향에 미치는 압축비의 영향
허엽,이상동,김옥만,안종윤,양광영,한길영 조선대학교 생산기술연구소 1996 生産技術硏究 Vol.18 No.1
In this study basic equations of fiber orientations is compared with experimental results. It is found that fiber orientations of short fiber reinforced polymeric composite under compression molding are governed by slope of flow speed in x-y direction. Fiber orientation angle of mold is also found to increase with closure speed and the compression ratio. At the middle of the mold. the slope of flow speed is larger in x-direction than in Y-direction. At the wall of the mold. the slope of flow speed in y-directicn occurs due to the effect of friction. hence affects the fiber orientation. The effect of partial flow. which incurs y-direction orientation causes to increase the fiber orientation angle at the fore part of the flow.