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논문 기본 정보

자료유형
학술저널
저자정보
Yoo, Kyun Min (School of Materials Science and Engineering, Seoul national University) Lee, Seok Won (School of Materials Science and Engineering, Seoul national University) Youn, Jae Ryoun (School of Materials Science and Engineering, Seoul national University) Yoon, Do Heum (Department of Neurosurgery, College of Medicine, Yonsei University) Cho, Yon Eun (Department of Neurosurgery, College of Medicine, Yonsei University) Yu, Jae-Pil (Kyungwon Medical Company) Park, Hyung Sang (Kyungwon Medical Company)
저널정보
한국섬유공학회 Fibers and Polymers Fibers and polymers 제4권 제2호
발행연도
2003.1
수록면
89 - 96 (8page)

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A vertebral cage is a hollow medical device which is used in spine forgery. By implanting the cage into the spine column, it is possible to restore disc and relieve pressure on the nerve roots. Most cages have been made of titanium alloys but they detract the biocompatibility. Currently PEEK (polyether ether ketone) if applied to various implants because it has good properties like heat resistance, chemical resistance, strength, and especially biocompatibility. A new shape of vertebral cage is designed and injection molding of PEEK is considered for production. Before injection molding of the cage, it is needed to evaluate process conditions and properties of the final product. Variables affecting the shrinkage of the cage are considered, e.g., injection time, packing pressure, mold temperature, and melt temperature. By using the numerical simula-tion program, MOLDFLOW, several cases are studied. Data files obtained by MOLDFLOW analysis are used for stress anal-ysis with ABAQUS, and shrinkage and residual stress fields are predicted. With these results, optimum process conditions are determined.

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