Modeling and image processing in infrared thermographic NDT of composite materials

Xingwang Guo, V. Vavilov, Guangping Guo, Wei Shao, Yingtao Liu

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Infrared thermographic nondestructive testing(NDT) was increasingly used in the inspection of composite materials due to large surface, rapid and noncontact testing capability. The modeling and thermal image processing of the NDT for carbon fiber reinforced plastic (CFRP) were researched. A mathematical model was proposed for the CFRP reference samples with Teflon inserts, and the simulation was carried out. The causes of the phenomenon that the temperature on defects appears lower than that on the background were analyzed. Many advanced data processing methods in the inspection of CFRP samples were used to deal with the infrared image sequences. Several processing algorithms were statistically evaluated to demonstrate that the Fourier transform and the correlation technique can provide the highest values of signal-to-noise ratio.

Original languageEnglish
Pages (from-to)363-369
Number of pages7
JournalBeijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics
Volume30
Issue number4
Publication statusPublished - Apr 2004

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Keywords

  • Composite materials
  • Image processing
  • Infrared thermographic testing
  • Mathematical model

ASJC Scopus subject areas

  • Aerospace Engineering

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