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Liquid permeability of an anisotropic fiber web
University College of Borås, Sweden.
2005 (English)In: Textile research journal, ISSN 0040-5175, E-ISSN 1746-7748, Vol. 75, no 4, 304-311 p.Article in journal (Refereed) Published
Abstract [en]

The Darcian permeability of a dense network of fibers with general orientation is examined experimentally and analytically. The permeability of a carded PA6 fiber web is measured in the three principal directions using a saturated parallel flow technique. A model is introduced that generalizes existing theories for unidirectional fiber arrays to fiber networks of general orientation distribution. The average drag on a given fiber is assumed to be independent of the overall fiber orientation distribution. A second-order orientation tensor describes the orientation dependence. Our generalization applied to the models of Gebart predicts reasonably well the in-plane permeability, but overestimates the out-of-plane permeability by a factor of four.

Place, publisher, year, edition, pages
2005. Vol. 75, no 4, 304-311 p.
Keyword [en]
Fiber arrays, Fiber web, Liquid permeability, Nylon fiber, Permeability measurement
National Category
Applied Mechanics
URN: urn:nbn:se:kth:diva-80038DOI: 10.1177/0040517505054736ISI: 000232607400005ScopusID: 2-s2.0-24944570004OAI: diva2:496047

QC 20150624

Available from: 2012-02-09 Created: 2012-02-09 Last updated: 2015-06-24Bibliographically approved

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Toll, Staffan
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