Infrared thermography for void mapping of a graphene/epoxy composite and its full-field thermal simulation

Asimina Manta, Matthieu Gresil, Constantinos Soutis

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

Important challenges are faced during the manufacturing of graphene nanoplatelet (GNP)/polymer composites, associated with material quality and how to eliminate or reduce fabrication-induced defects in the effort to improve performance. In the present work, infrared thermography (IRT) is used to measure void content and map void distribution, formed during fabrication of GNP/epoxy nanocomposites. Taking into consideration the size of each pixel (~100 μm), this method enables the non-destructive detection of flaws with a size of approximately 200 μm. Their effect on thermal conductivity of the nanocomposite is studied by a 3D multiscale finite element analysis. Generic and full-field comparisons demonstrate a good agreement between measurements and numerical predictions, validating assumptions and simplifications made in the proposed model.

Original languageEnglish
Pages (from-to)1441-1453
Number of pages13
JournalFatigue & Fracture of Engineering Materials & Structures
Volume42
Issue number7
DOIs
Publication statusPublished - Jul 2019
Externally publishedYes

Keywords

  • graphene
  • infrared thermography
  • multiscale analysis
  • nanocomposites
  • representative volume element (RVE)
  • thermal diffusivity
  • voids

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