Contrast enhancement in crack detection by stimulated differential infrared radiometry: modelisation and experiments

J. Guitonny, Z. Bozoki, A. M. Mansanares, M. Le Liboux, D. Fournier, A. C. Boccara

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Usually sample surface structures generate large flunctuations of the photothermal response due to local variations of optical, thermal and geometrical properties which mask the crack signal when using single detection ir radiometry. Demonstrated experimentally and theoretically is the ability of a differential stimulated ir detection scheme to obtain a better contrast in crack detection on real samples. A finite element simulation confirms the magnitude and shape of the signals for vertical and slanted cracks.

Original languageEnglish
Pages (from-to)61-64
Number of pages4
JournalOptics Communications
Volume104
Issue number1-3
DOIs
Publication statusPublished - Dec 15 1993

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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