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Transport properties and current flow patterns in homogeneous strongly anisotropic materials

Transport properties and current flow patterns in homogeneous strongly anisotropic materials
Transport properties and current flow patterns in homogeneous strongly anisotropic materials
Purpose – The purpose of this paper is to investigate and explain the unexpected current flow patterns and twisting equipotential surfaces observed in strongly anisotropic materials. Design/methodology/approach – Potential distributions and current flow paths in highly anisotropic composite materials were studied via numerical simulation and experimentally. Simplified composite panels with two plyes were analysed using a finite-element model; the predictions were then confirmed experimentally. Findings – The unexpected twisting equipotential surfaces and current flow patterns were found to be consistent with minimising of Joule heat release in the material. Numerical modelling suggests that the twisted profiles of the potential are highly sensitive to the anisotropic electrical conductivity. Originality/value – This paper discusses the reverse current flowswitnessed in a two-layer anisotropic system. Such behaviour has never been predicted or observed experimentally before. The reported results will be of interest to anyone who is considering using anisotropic materials such as carbon fibre composites which might experience applied potential difference, such as lightning strikes.
Physical properties of materials, Composite materials, Electric current
0332-1649
1047-1055
Chippendale, R.D.
192d7845-80dd-4f92-979b-d13c1b870a62
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Sykulski, J.K.
d6885caf-aaed-4d12-9ef3-46c4c3bbd7fb
Chippendale, R.D.
192d7845-80dd-4f92-979b-d13c1b870a62
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Sykulski, J.K.
d6885caf-aaed-4d12-9ef3-46c4c3bbd7fb

Chippendale, R.D., Golosnoy, I.O., Lewin, P.L. and Sykulski, J.K. (2011) Transport properties and current flow patterns in homogeneous strongly anisotropic materials. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 30 (3), 1047-1055.

Record type: Article

Abstract

Purpose – The purpose of this paper is to investigate and explain the unexpected current flow patterns and twisting equipotential surfaces observed in strongly anisotropic materials. Design/methodology/approach – Potential distributions and current flow paths in highly anisotropic composite materials were studied via numerical simulation and experimentally. Simplified composite panels with two plyes were analysed using a finite-element model; the predictions were then confirmed experimentally. Findings – The unexpected twisting equipotential surfaces and current flow patterns were found to be consistent with minimising of Joule heat release in the material. Numerical modelling suggests that the twisted profiles of the potential are highly sensitive to the anisotropic electrical conductivity. Originality/value – This paper discusses the reverse current flowswitnessed in a two-layer anisotropic system. Such behaviour has never been predicted or observed experimentally before. The reported results will be of interest to anyone who is considering using anisotropic materials such as carbon fibre composites which might experience applied potential difference, such as lightning strikes.

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COMPELvol30no3y2011page1047.pdf - Version of Record
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More information

Published date: June 2011
Keywords: Physical properties of materials, Composite materials, Electric current
Organisations: EEE

Identifiers

Local EPrints ID: 272482
URI: http://eprints.soton.ac.uk/id/eprint/272482
ISSN: 0332-1649
PURE UUID: 034cce85-a2e0-4965-b703-e06e761baf37
ORCID for J.K. Sykulski: ORCID iD orcid.org/0000-0001-6392-126X

Catalogue record

Date deposited: 17 Jun 2011 07:39
Last modified: 07 Oct 2020 02:30

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Contributors

Author: R.D. Chippendale
Author: I.O. Golosnoy
Author: P.L. Lewin
Author: J.K. Sykulski ORCID iD

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