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Measurement of the permeability tensor of compressed fibre beds
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
2002 (English)In: Transport in Porous Media, ISSN 01693913 (ISSN), Vol. 47, no 3, 363-380 p.Article in journal (Refereed) Published
Abstract [en]

A new method to measure the permeability tensor of highly compressed fibre beds is developed. The method is based on saturated parallel flow and is evaluated through experiments with various textile materials: press fabrics used in papermaking and fibre reinforcements designed for composites. Since the materials are in the form of sheets, two measuring cells are used, one for the principal in-plane permeabilities and the other for the out-of-plane permeability. A unique feature is that the edge and the bulk flow are measured separately, so that any influence from enhanced or suppressed edge flow may be eliminated. The technique is evaluated with good results in terms of scatter in the measured permeability and the influence of test geometry, pressure, and liquid properties.

Place, publisher, year, edition, pages
2002. Vol. 47, no 3, 363-380 p.
Keyword [en]
Darcy's law, Fibre, In-plane, Measurements, Out-of-plane, Permeability, Fabrics, Fiber reinforced materials, Fibers, Papermaking, Tensors, Saturated parallel flow, Mechanical permeability, fiber-reinforced material, paper manufacture, porous medium
National Category
Applied Mechanics
URN: urn:nbn:se:kth:diva-80042DOI: 10.1023/A:1015511312595OAI: diva2:496027

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NR 20140805Available from: 2012-02-09 Created: 2012-02-09 Last updated: 2014-04-08Bibliographically approved

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