Contact Resistance Heating of Unidirectional Carbon Fibre Tows in a Powder-Epoxy Towpregging Line

Research output: Contribution to journalArticlepeer-review

Abstract

Contact resistances play a major role in Joule heating systems. Identifying contact resistances provides a better understanding of the heating process and increases the accuracy of the process models. In this study, contact resistances of the Joule heating section in a powder-epoxy-based towpregging line were explored. For different process parameters, such as production speed, tension, and temperature, contact resistances occurring between metal roller electrodes and dry carbon fibre tows (i.e. without powder-epoxy) were measured to gain an insight into the heating process. Moreover, the effect of contact resistance heating on the temperature profile of the carbon fibre tows was determined with an infrared thermal camera. A simplified finite element model was developed to calculate the temperature distribution onthe carbon fibre tow, which showed a good agreement with the experimental data. Results suggest that contact resistances in the towpregging line were significant and contact resistance heating changed the heating profile.
Original languageEnglish
Pages (from-to)383-392
JournalPlastics, Rubber and Composites
Volume51
Issue number8
Early online date9 Aug 2022
DOIs
Publication statusPublished - 14 Sep 2022

Keywords

  • Joule heating
  • contact resistance
  • contact resistance heating
  • towpreg
  • Powder epoxy

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