A novel approach for one-sided thermal nondestructive testing of composites by using infrared thermography

V. P. Vavilov, Sachin Sampatrao Pawar

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Abstract One-sided thermal non-destructive testing (TNDT) is of vital importance in aerospace composites to monitor structural degradation, as well as to detect subsurface defects. The objective of this study is to evaluate simultaneously the thermal diffusivity and to characterize the defects within carbon fiber reinforced polymer (CFRP) composites. In this paper, a novel one sided TNDT technique is presented which relies on creating an artificial inflection point by multiplying front-surface temperature evolution by nth power of time, where 0 < n < 0.5, followed by optimization of n. An analytical solution of the diffusivity calculation and defect characterization in the case of CFRP composite plate is discussed. The characterization of low velocity impact damage is also investigated with the help of theoretical and experimental results. Some key research points which need further exploration are also discussed.

Original languageEnglish
Article number4429
Pages (from-to)224-233
Number of pages10
JournalPolymer Testing
Volume44
DOIs
Publication statusPublished - 29 Jul 2015

Keywords

  • Impact damage
  • Modeling
  • Thermal diffusivity
  • Thermal nondestructive testing
  • Tomography

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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