Journal of Welding and Joining

  • 제23권5호
  • /
  • Pages.37-42
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  • 2005
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
권호 표지

필렛 용접부의 비접촉 초음파 검사 기법

Non-contact Ultrasonic Inspection Technology of Fillet Weldments

  • Park, Ik-Keun (Dept. of Mechanical Engineering, Seoul National University of Technology) ;
  • Lee, Chul-Ku (Dept. of Mechanical Engineering, Seoul National University of Technology) ;
  • Kim, Hyun-Mook (Graduate School, Hanyang University) ;
  • Park, Tae-Sung (Graduate School of Technology, Seoul National University of Technology) ;
  • Kim, Yong-Kwon (Graduate School of Energy and Environment, Seoul National University) ;
  • Cho, Yong-Sang (Korea Electric Power Research Institue) ;
  • Song, Won-Joon (Research Institute of Industrial Science and Technology) ;
  • Ahn, Houng-Kun (Sae-An Corp.)
  • 발행 : 2005.10.01
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초록

The non-destructive Inspection of the fillet weldment has difficulties due to its geometrical complexity and uneasy access. The surface shear horizontal wave (SH-wave), however, has been successfully applied to the detection of cracks on the surface and sub-surface of the filet weldment heel part. The conventional ultrasonic inspection using the surface SH-wave is usually a contact method using piezoelectric transducer. Thus, it is not suitable for a field application because the reliability and repeatability of inspection are significantly affected by test conditions such as couplant, contact pressure and pre-process. In order to overcome this problem, a non-contact SH-wave inspection method using EMAT is propose. The experimental results with this non-contact method are compared with those with a conventional ultrasonic method in fillet weldment with slit type defects. It is shown that the non-contact inspection technique requires simple procedure and less time in the fillet weldment inspection.

키워드

참고문헌

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