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Radial flow advancement in multi-layered preform for resin transfer molding  

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)
Publication Information
Korea-Australia Rheology Journal / v.18, no.4, 2006 , pp. 217-224 More about this Journal
Abstract
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.
Keywords
preform; resin transfer molding; permeability; woven fabric; random mat;
Citations & Related Records

Times Cited By Web Of Science : 5  (Related Records In Web of Science)
Times Cited By SCOPUS : 5
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