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Radial flow permeability measurement. Part A: Theory

Radial flow permeability measurement. Part A: Theory
Radial flow permeability measurement. Part A: Theory
This paper deals with permeability measurement in the context of Resin Transfer Moulding (RTM). A new approach to two-dimensional radial flow permeability measurement with constant inlet pressure is proposed. It allows principal permeability to be measured even if the experimental axes are not aligned with the principal direction. This part of the paper looks at the underlying theory of the new approach while part B reports on validation experiments. Formulae are derived which allow to calculate principal permeability and the orientation of the principal axes from flow front measurements in three directions. Transient effects of the developing flow front caused by the circular inlet are discussed and its influence on the measured permeability is illustrated. Numerical studies are performed which show that the shape of the flow front is dependent only on the size of the inlet diameter and the degree of anisotropy. This leads to the development of a formula for estimating the minimum required mould size for permeability measurement.
permeability measurement, e resin transfer moulding (rtm)
1359-835X
781-796
Weitzenbock, J.R.
1312d711-2965-4202-b1f4-e37c33138140
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Wilson, P.A.
8307fa11-5d5e-47f6-9961-9d43767afa00
Weitzenbock, J.R.
1312d711-2965-4202-b1f4-e37c33138140
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Wilson, P.A.
8307fa11-5d5e-47f6-9961-9d43767afa00

Weitzenbock, J.R., Shenoi, R.A. and Wilson, P.A. (1999) Radial flow permeability measurement. Part A: Theory. Composites Part A: Applied Science and Manufacturing, 30 (6), 781-796. (doi:10.1016/S1359-835X(98)00183-3).

Record type: Article

Abstract

This paper deals with permeability measurement in the context of Resin Transfer Moulding (RTM). A new approach to two-dimensional radial flow permeability measurement with constant inlet pressure is proposed. It allows principal permeability to be measured even if the experimental axes are not aligned with the principal direction. This part of the paper looks at the underlying theory of the new approach while part B reports on validation experiments. Formulae are derived which allow to calculate principal permeability and the orientation of the principal axes from flow front measurements in three directions. Transient effects of the developing flow front caused by the circular inlet are discussed and its influence on the measured permeability is illustrated. Numerical studies are performed which show that the shape of the flow front is dependent only on the size of the inlet diameter and the degree of anisotropy. This leads to the development of a formula for estimating the minimum required mould size for permeability measurement.

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More information

Published date: June 1999
Keywords: permeability measurement, e resin transfer moulding (rtm)
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 50958
URI: http://eprints.soton.ac.uk/id/eprint/50958
ISSN: 1359-835X
PURE UUID: c12ef634-66fa-4924-86f4-a5365cd17f91
ORCID for P.A. Wilson: ORCID iD orcid.org/0000-0002-6939-682X

Catalogue record

Date deposited: 29 Apr 2008
Last modified: 16 Mar 2024 02:35

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Contributors

Author: J.R. Weitzenbock
Author: R.A. Shenoi
Author: P.A. Wilson ORCID iD

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