NF EN ISO 4022
Permeable sintered metal materials - Determination of fluid permeability
This document specifies a method for the determination of the fluid permeability of permeable sintered metal materials in which the porosity is deliberately continuous or interconnecting, testing being carried out under such conditions that the fluid permeability can be expressed in terms of viscous and inertia permeability coefficients (see Annex A). This document does not apply to very long hollow cylindrical test pieces of small diameter, in which the pressure drop of the fluid in passing along the bore of the cylinder might not be negligible compared with the pressure drop of the fluid passing through the wall thickness (see A.5).
This document specifies a method for the determination of the fluid permeability of permeable sintered metal materials in which the porosity is deliberately continuous or interconnecting, testing being carried out under such conditions that the fluid permeability can be expressed in terms of viscous and inertia permeability coefficients (see Annex A).
This document does not apply to very long hollow cylindrical test pieces of small diameter, in which the pressure drop of the fluid in passing along the bore of the cylinder might not be negligible compared with the pressure drop of the fluid passing through the wall thickness (see A.5).
- Avant-propos
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1 Domaine d'application
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2 Références normatives
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3 Termes, définitions, symboles et unités
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4 Principe
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5 Éprouvette
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6 Appareillage
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7 Mode opératoire
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8 Expression des résultats
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9 Rapport d'essai
- Annexe A (informative) Écoulement des fluides à travers les matériaux poreux
- Annexe B (informative) Fluides d'essai
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