한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)
- 한국정밀공학회 1995년도 추계학술대회 논문집
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- Pages.646-649
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- 1995
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- 2005-8446(pISSN)
유리섬유 강화 Polypropylene의 고상굽힘성형시 Spring-back 현상
The Spring-back Phenomena in Soild Phase Bending of Glass Fiber Reinforced Polypropylene
초록
An experimental and analyical investigations were undertaken to improve understanding of spring-back phenomena of chopped fiber reinforced thermoplastic composite sheet. The materials tested contained 20, 35, 40 percent by weight of readomly oriented glass fiber in a prolypropylene matrix. The simple bending tests were performed at temperatures ranging form 75 .deg. c to 150 .deg. c with 25 .deg. c increment and at punch speed of 1mm/sec and 0.01mm/sec. The spring-back angel measured in pure bending is compared with the prediction base on the analytical model. Good agreement between experimental and predicted results was observed.
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