Conclusions
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1.
The hydraulic properties of permeable fiber materials, like those of powder materials, can be evaluated using only one parameter, namely, the gas-permeability coefficient.
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2.
The relationship between the gas permeability and porosity of fiber materials is described by a power equation the exponent of which increases from 2.5–4.0 to 5.0 as the fiber diameter is decreased from 200 to 50μ.
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3.
Increasing the porosity of a fiber material causes its hydraulic pore diameter to grow much (3.5 times) faster than its maximum pore diameter.
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4.
As the porosity of fiber materials is increased from 30 to 80%, their tensible strength diminishes more rapidly (on the average, four times) than their shear strength, while at the same time their electrical conductivity falls by not more than 17%.
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For Part I, see Poroshkovaya Met., No. 8, 73 (1973)-Translator.
Translated from Poroshkovaya Metallurgiya, No. 9 (129), pp. 77–82, September, 1973.
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Kostornov, A.G., Shevchuk, M.S. Hydraulic characteristics and structure of porous metal fiber materials. Powder Metall Met Ceram 12, 752–756 (1973). https://doi.org/10.1007/BF00793986
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DOI: https://doi.org/10.1007/BF00793986