SHERP

Permeability Measurement of a Circular Braided Preform for Resin Transfer Molding

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Authors
Cho, Yun Kyung; Song, Young Seok; Kang, Tae Jin; Chung, Kwan Soo; Youn, Jae Ryoun
Issue Date
2003-07-01
Publisher
The Korean Fiber Society
Citation
Fibers and Polymers, v.4(3), pp.135-144
Keywords
PermeabilityCircular braided preformResin transfer moldingSaturated flowUnsaturated flow
Abstract
Permeability of the preform is one of key factors in design of RTM (Resin Transfer Molding) mold, determination
of processing conditions, and modeling of flow in the mold. According to previous studies, permeability measured in the
unsaturated fiber mats are higher than that in the saturated fiber mats by about 20 % because of the capillary pressure. In this
study, permeabilities of several fiber preforms are measured for both saturated and unsaturated flows. A saturated experiment
of radial flow has been adopted to measure the permeability of anisotropic fiber preforms with high fiber content, i.e., circular
braided preforms. In this method, four pressure transducers are used to measure the pressure distribution. Permeabilities in
different directions are determined and the experimental results show a good agreement with the theory. Since permeability is
affected by the capillary effect, permeability should be measured in the unsaturated condition for the textile composites to be
manufactured under lower pressure as in the Vacuum Assisted Resin Transfer Molding (VARTM).
ISSN
1229-9197
Language
English
URI
http://hdl.handle.net/10371/18910
DOI
https://doi.org/10.1007/BF02875461
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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