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 journalArticlepeer-review

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
JournalFatigue & Fracture of Engineering Materials & Structures
Early online date3 Feb 2019
DOIs
Publication statusPublished - 2019

Keywords

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

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