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Transverse permeability measurement of a circular braided preform in liquid composite molding  

Chae, Hee-Sook (School of Materials Science and Engineering, Seoul National University)
Song, Young-Seok (School of Materials Science and Engineering, Seoul National University)
Youn, Jae-Ryoun (School of Materials Science and Engineering, Seoul National University)
Publication Information
Korea-Australia Rheology Journal / v.19, no.1, 2007 , pp. 17-25 More about this Journal
Abstract
In liquid composite molding (LCM), composites are produced by impregnation of a dry preform with liquid resin. The resin flow through the preform is usually described by Darcy's law and the permeability tensor must be obtained for filling analysis. While the resin flow in the thickness direction can be neglected for thin parts, the resin flow in the transverse direction is important for thicker parts. However, the transverse permeability of the preform has not been investigated frequently. In this study, the transverse permeability was measured experimentally for five different fiber preforms. In order to verify the experimental results, the measured transverse permeability was compared with numerical results. Five different fiber mats were used in this study: glass fiber woven fabric, aramid fiber woven fabric, glass fiber random mat, glass fiber braided preform, and glass/aramid hybrid braided preform. The anisotropic braided preforms were manufactured by using a three dimensional braiding machine. The pressure was measured at the inlet and outlet positions with pressure transducers.
Keywords
glass fiber; aramid fiber; liquid composite molding; permeability; braiding;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 4  (Related Records In Web of Science)
Times Cited By SCOPUS : 5
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