Modelling the micro-structure of non-uniform conductive non-woven fabrics: Determination of sheet resistance

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The plane-wave shielding effectiveness of conductive non-woven fabrics is dominated by the sheet conductance over a wide range of frequencies until the effects of skin depth, and apertures start to influence the performance (typically at 1-10GHz depending on the areal density). This paper describes models for determining the sheet conductance from knowledge of the type, quantity, orientation and contact resistance of the fibres in the fabricated material. The stochastic nature of these materials, their complexity and local scale variability has been included in the models and correlates well with experimental
results. The anisotropic sheet conductance is modelled to within 1% of the measured value in the high shielding orientation and to within 2% in the orthogonal orientation using an inter-fibre contact resistance estimated to be 10 kΩ.
Original languageEnglish
Title of host publicationElectromagnetic Compatibility (EMC Europe), 2015 International Symposium on
Number of pages6
Publication statusPublished - 2015

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  • sheet resistance
  • shielding effectiveness
  • stochastic material
  • contact resistance
  • anisotropic material
  • circuit model

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