Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Detection and Comparison of Surface Defects in Pipe Welds

배관 용접부 표면결함 검출 및 비교

  • Jung, Yoon-Soo (Dept. of Mechanical System and Automotive Engineering, Graduate of Chosun Univ.) ;
  • Gao, Jia-Chen (Dept. of Mechanical System and Automotive Engineering, Graduate of Chosun Univ.) ;
  • Ahn, Tae-Hyoung (Dept. of Mechanical System and Automotive Engineering, Graduate of Chosun Univ.) ;
  • Kim, Jae-Yeol (Dept. of Mechanical System & Automotive Engineering, Chosun Univ.)
  • 정윤수 (조선대학교 일반대학원 기계시스템.미래자동차공학과) ;
  • 고가진 (조선대학교 일반대학원 기계시스템.미래자동차공학과) ;
  • 안태형 (조선대학교 일반대학원 기계시스템.미래자동차공학과) ;
  • 김재열 (조선대학교 기계시스템미래자동차공학부)
  • Received : 2019.11.08
  • Accepted : 2019.11.26
  • Published : 2020.01.31
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Abstract

At present, 24 nuclear power plants are in operation nationwide as the main power source responsible for about 27% of Korea's electricity, and five nuclear power plants are currently under construction. Issues of nuclear safety and reliability have always existed, but after the Fukushima accident, ensuring reliability has become an even more important issue for safety. Compared to other kinds of accidents, the initial response after a nuclear accident is more important than any other accident. Prior to accidents, it is important to be able to predict and judge the accident in advance for the sake of prevention. In this research, non-destructive inspection methods for existing pipe welds include radiographic, ultrasonic, magnetic particle practice, and liquid penetration testing. For this experiment, carbon steel pipes like that of the material used in nuclear pipes were adopted, and specimen welded to the flange (Flange) were manufactured. After testing, the weld specimen were not damaged through the infrared thermography (IRT) experiment. This study attempted to improve the safety of carbon steel pipes through a comparative analysis of finite element analysis.

Keywords

References

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