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In-plane permeability measurements on fiber reinforcements by the multi-cavity parallel flow technique
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-6958-5508
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
1999 (English)In: Polymer Composites, ISSN 0272-8397, E-ISSN 1548-0569, Vol. 20, no 1, p. 146-154Article in journal (Refereed) Published
Abstract [en]

This report discusses the advantages and drawbacks of the multi-cavity parallel flow technique for permeability measurements. An experimental series with repeated measurements on material from the same roll shows that the repeatability of the technique is very good considering the manufacturing variability of the fabric. The measured standard deviation in the repeatability study is about 10%. It is, however, shown that the permeability can vary considerably- between reinforcements of similar geometry. Furthermore, computer simulations were used to estimate the errors when highly anisotropic materials are oriented at an angle to the material principal direction in the parallel flow technique. The conclusion based on the simulations is that the length to width ratio of the cavity should be larger than the anisotropy of the reinforcement for an acceptable error.

Place, publisher, year, edition, pages
1999. Vol. 20, no 1, p. 146-154
National Category
Energy Engineering Fluid Mechanics and Acoustics
Research subject
Energy Engineering; Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-4939DOI: 10.1002/pc.10342Local ID: 2f0705f0-a0f6-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-4939DiVA, id: diva2:977813
Note
Godkänd; 1999; Bibliografisk uppgift: Part of this paper has been presented at the Seventh International Conference on Fibre Reinforced Composites, Newcastle upon Tyne, England, 15-17 April 1998; 20070110 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Gebart, RikardLundström, Staffan

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