Pulse thermography experimental data processing by numerically simulating thermal processes in a sample with periodical structure of defects

Ljubiša D. Tomić, Jovan M. Elazar

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Standard thermal camera capabilities were extended for application in pulsed thermography, so that more accurate values of maximal temporal temperature difference, and therefore more reliable defect characterization, were acquired. This was achieved by fitting maximal values for temperature difference, extracted from successive frames, by a curve calculated with developed software based on thermal transport processes. Maximal temporal temperature difference is not possible to sample directly because it usually occurs between the frames. Thermal image processing and analysis were greatly simplified by specially prepared targets with periodic structure of defects. Developed numerical code can be further used to investigate defect detectability in different materials, but also to determine material thermal properties.

Original languageEnglish
Pages (from-to)132-135
Number of pages4
JournalNDT and E International
Volume60
DOIs
StatePublished - 20 Sep 2013
Externally publishedYes

Keywords

  • Heat diffusion
  • NDT
  • Pulse thermography
  • Thermal imaging

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering

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