Investigation of anisotropic thermal conductivity in polymers using infrared thermography

David Nieto Simavilla, David C. Venerus

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A new experimental method based on infrared thermography (IRT) is developed to study deformation-induced anisotropic thermal conductivity in polymers. An analytic solution for the temperature field of samples heated by a point source is utilized with a robust fitting procedure allowing for quantitative measurement of two components of the normalized thermal conductivity tensor of uniaxially stretched samples. In order to validate the method, we compare measurements on a cross-linked polybutadiene network with those obtained from a previously developed technique based on forced Rayleigh scattering (FRS). We find excellent agreement between the two techniques. Uncertainty in the measurements using IRT method is estimated to be about 2-5%. The accuracy of the method and its potential application to nontransparent materials make it a good alternative to extend current research on anisotropic thermal transport in polymeric materials.

Original languageEnglish (US)
Article number111303
JournalJournal of Heat Transfer
Volume136
Issue number11
DOIs
StatePublished - Nov 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • Anisotropic
  • Cross-Linked Polymer
  • Elastomer
  • Infrared Thermography
  • Thermal Conductivity
  • Thermal Properties

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