Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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The Study of Infrared Thermography of a Mild Steel for Nondestructive Evaluation

적외선 카메라에 의한 연강의 비파괴 평가에 대한 연구

  • Han, Jeong-Seb (Dept. of Materials Science and Engineering, DongA Univ.) ;
  • Park, Jin-Hwan (Devision of Chemical Engineering, PuKyung Univ.)
  • 한정섭 (동아대학교 신소재공학과) ;
  • 박진환 (부경대학교 응용화학공학부)
  • Published : 2008.04.28
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Abstract

The application of infrared thermography for detecting defects under the surface of a material was studied. Defects in a specimen were made by back-drilled circular holes. To get alarge temperature difference at the surface, a halogen lamp was used for surface heating. We confirmed that the defect location had a good relationship with the maximum temperature difference. The sizes of the defects could be calculated by means of the FWHM. The value of the FWHM of a temperature difference decreased with time. Therefore in an extremely short time after the heating, the true defect size could be measured.

Keywords

References

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