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A study on the determination of in‐plane permeability of fiber preforms
Author(s) -
Um Moonkwang,
Lee Sangkwan
Publication year - 1999
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.10400
Subject(s) - materials science , orthotropic material , composite material , anisotropy , permeability (electromagnetism) , porosity , homogeneous , finite element method , structural engineering , mathematics , optics , physics , combinatorics , membrane , biology , engineering , genetics
One of the parameters most frequently used in modeling and designing the mold filling process is the permeability of fibrous preforms. To obtain radial propagation of a viscous polymer into a homogeneous orthotropic porous medium, an approximate solution is derived and its results are compared with numerical ones obtained from boundary element method (BEM). A simple and direct procedure incorporating approximate solution with experimental data has been proposed to determine the principal in‐plane permeabilities of the reinforcements. A scheme is also suggested in order to increase the accuracy in the determination of degree of anisotropy. The effect of resin injection type on permeability is investigated through the experiments.