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In-plane permeability measurements on fiber reinforcements by the multi-cavity parallel flow technique
Swedish Institute of Composites Box 271, S-941 26 Piteå, Sweden; Polymeric Materials, Chalmers University of Technology, S-412 96 Gothenburg, Sweden.ORCID iD: 0000-0002-1033-0244
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. Swedish Institute of Composites Box 271, S-941 26 Piteå, Sweden.ORCID iD: 0000-0002-6958-5508
Swedish Institute of Composites Box 271, S-941 26 Piteå, Sweden.
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.10342ISI: 000079061700014Scopus ID: 2-s2.0-0033076401Local ID: 2f0705f0-a0f6-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-4939DiVA, id: diva2:977813
Note

Godkänd; 1999; 20070110 (ysko);

Part of this paper has been presented at the Seventh International Conference on Fibre Reinforced Composites, Newcastle upon Tyne, England, 15-17 April 1998

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2023-09-13Bibliographically approved

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Lundström, T. StaffanGebart, B. Rikard

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