A fast and robust method for determining thermal diffusivity images in complex geometries

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

2 Citations (Scopus)

Abstract

Active thermography is a widely used method in the field of non-destructive testing (NDT) for the analysis of materials and structures with which it is possible to determine material properties as well as to detect and characterize flaws. Applying pulsed thermography (PT) to various materials with different sample geometries, it has been possible to show that thermal diffusivity can be calculated from recorded thermal time series by applying a fast and robust curve fitting method. This reference-free evaluation is based on the determination of physical properties derived from the ID-heat diffusion equation. In this paper, results from thermal diffusivity measurements carried out on carbon fiber reinforced plastics (CFRP) and glass fiber reinforced plastics (GFRP) are showing that the application of a 'shape correction' method allows improved diffusivity images of complex geometries to be generated.

Original languageEnglish
Title of host publicationEmerging Technologies in ETNDT - Proceedings of the 4th International Conference on Emerging Technologies in Non-Destructive Testing, ETNDT 4
PublisherTaylor & Francis / Balkema
Pages179-185
Number of pages7
ISBN (Print)9780415464765
Publication statusPublished - 2008
Event4th International Conference on Emerging Technologies in Non-Destructive Testing, ETNDT 4 - Stuttgart, Germany
Duration: 2 Apr 20074 Apr 2007

Publication series

NameEmerging Technologies in ETNDT - Proceedings of the 4th International Conference on Emerging Technologies in Non-Destructive Testing, ETNDT 4

Conference

Conference4th International Conference on Emerging Technologies in Non-Destructive Testing, ETNDT 4
CountryGermany
CityStuttgart
Period02.04.200704.04.2007

Keywords

  • Active Thermography
  • Non destructive testing
  • complex geometry

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