Résumé
The air permeability test method is based on the Kozeny equation. Weighed fibres (test specimen) are introduced in a measuring chamber with known volume. Air is passed through this test specimen. A scale indicating variations in permeability of air may be calibrated in appropriate absolute units of rate of flow or pressure difference and a table or graph is provided for conversion of the observed reading into values of mean diameter of the measured wool fibres.
Informations générales
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État actuel: AnnuléeDate de publication: 1976-11Stade: Annulation de la Norme internationale [95.99]
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Edition: 1Nombre de pages: 10
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Comité technique :ISO/TC 38/SC 23ICS :59.060.10
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Cycle de vie
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Actuellement
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Révisée par
PubliéeISO 1136:2015