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논문 기본 정보

자료유형
학술저널
저자정보
Shin, K.S. (School of Materials Science and Engineering, Seoul National University) Song, Y.S. (School of Materials Science and Engineering, Seoul National University) Youn, J.R. (School of Materials Science and Engineering, Seoul National University)
저널정보
한국유변학회 Korea-Australia rheology journal Korea-Australia rheology journal 제18권 제4호
발행연도
2006.1
수록면
217 - 224 (8page)

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Rapid flow advancement without void formation is essential in the liquid composite molding (LCM) such as resin transfer molding (RTM) and vacuum assisted resin transfer molding (VARTM). A highly permeable layer in multi-layered preform has an important role in improvement of the flow advancement. In this study, a multi-layered preform which consists of three layers is employed. Radial flow experiment is carried out for the multi-layered preform. A new analytic model for advancement of flow front is proposed and effective permeability is defined. The effective permeability for the multi-layered preform is obtained analytically and compared with experimental results. Compaction test is performed to determine the exact fiber volume traction of each layer in the multi-layered preform. Transverse permeability employed in modeling is measured experimentally unlike the previous studies. Accurate prediction of flow advancement is of great use for saving the processing time and enhancing product properties of the final part.

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