Non-destructive testing in the high-temperature regime by using a magneto-optical film

Jinyi Lee, Renliang Wang, Tetsuo Shoji, Seongpyo Hong

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The plane of a polarized light beam is rotated when the beam is transmitted through a magneto-optical film (MOF). Magnetic flux leakage (MFL) occurs around a crack when the specimen is magnetized and affects the magnetic domains. Therefore, a crack can be detected using a polarized lighting system and MOF. The crack detection ability depends on the domain width and saturation magnetization of the MOF. Also, crack detection at high temperatures is essential. The physical properties of the MOF at high temperatures were examined, and a nondestructive testing (NDT) method for detecting cracks at high temperatures was proposed in this paper.

Original languageEnglish
Pages (from-to)420-426
Number of pages7
JournalNDT and E International
Issue number6
Publication statusPublished - 2008 Sept
Externally publishedYes


  • Cracks
  • Faraday effect
  • High temperature
  • Magneto-optic
  • NDT

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


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