A method for inductive measurement of equivalent electrical conductivity in thin non-consolidated multilayer carbon fibre fabrics

Research output: Contribution to journalArticle

Abstract

Carbon fibre fabrics are electrically conductive and therefore possess the prerequisites for being inductively heated. In-situ heating by induction could significantly reduce processing time and energy consumption during consolidation of carbon fibre composites, but to control the induction heating process properly the electrical conductivity of the fabric must be known. The work presented in this article puts forward and validates a method for inductively measuring the equivalent electrical conductivity in thin dry multilayer carbon fibre fabrics as a function of the fibre volume fraction by varying the applied pressure on the fabric. The method has been tested on twill weave fabric based on the PAN (polyacrylonitrile) fibre T700S from Toray and the results show good agreement with a simplified model for electrical conductivity in carbon fibre fabrics and existing models for the relation between fibre volume fraction and pressure.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Composite Science and Engineering

Keywords

  • Carbon fibre, Electrical properties, Finite element analysis, Induction heating
Original languageEnglish
Pages (from-to)204-213
Number of pages10
JournalComposites Part B: Engineering
Volume140
Publication statusPublished - 2018 May 1
Publication categoryResearch
Peer-reviewedYes