Porosity determination of thin fibrous-material sheets according to the optical transmission coefficient
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A statistical model of a porous fibrous material is presented which describes, within 6% error at θ ≥ 0.7, the porosity θ and the optical transmission coefficient T of a sheet fibrous material as a function of the geometric fiber sizes: i.e., diameter d, lengthl, sheet thickness h, and average density λ, of the geometric fiber centers. A functional dependence f = (h, T) was established which allowed the porosity of thin fibrous material sheets to be determined by measurement of the optical transmission coefficient.
KeywordsPorosity Statistical Model Average Density Optical Transmission Transmission Coefficient
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