한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제32권6호
  • /
  • Pages.529-536
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  • 2015
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  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
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자동차부품의 마이크로급 표면크랙 탐상을 위한 FEM 를 기반한 와전류 센서 디자인 및 적용

Application and Design of Eddy Current based on FEM for NDE Inspection of Surface Cracks with Micro Class in Vehicular Parts

  • Im, Kwang-Hee (Department of Mechanical and Automotive Engineering, Woosuk University) ;
  • Lee, Seul-Ki (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Hak-Joon (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Song, Sing-Jin (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Woo, Yong-Deuk (Department of Mechanical and Automotive Engineering, Woosuk University) ;
  • Na, Sung-Woo (Technology Research Center, Seoul Metal Co., Ltd.) ;
  • Hwang, Woo-Chae (Technology Research Center, Seoul Metal Co., Ltd.) ;
  • Lee, Hyung-Ho (Research Center, Daesan ENG Co.)
  • 투고 : 2015.05.15
  • 심사 : 2015.05.26
  • 발행 : 2015.06.01
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초록

A defect could be generated in bolts for a use of oil filters for the manufacturing process and then may affect to the safety and quality in bolts. Also, fine defects may be imbedded in oil filter system. So it is very important that such defects be investigated and screened during the multiple manufacturing processes. Therefore, in order effectively to evaluate the fine defects, the FEM simulations were performed to make characterization in the crack detection of the bolts and the parameters such as number of turns of the coil, the coil size, applied frequency were calculated based on the simulation results. Simulations were carried out for the defect signal of eddy current probe. Exciter and receiver were utilized. In this paper, the FEM simulations were performed in both bobbin-type and pancake-type probe, both probes were optimized under Eddy current FEM simulations and the results of calculation were discussed.

키워드

참고문헌

  1. Rao, B. P. C., "Practical Eddy Current Testing," Morgan & Claypool, pp. 24-25, 2007.
  2. Hong, H. and Jeon, S. M., "Cause and Diagnosis of Engine Wear and Damage," Research Center of Daewoo Automobiles, pp. 130-131, 1994.
  3. Mooer, P. O., "Nondestructive Testing Handbook," ASNT, 3rd Ed., pp. 130-131.1986.
  4. Shull, P. J., "Nondestructive Evaluation: Theory, Techniques and Applications," CRC Press, pp. 317- 331, 2002.
  5. Ahn, Y. S., Gil, D. S., and Park, S. G.,"The Design & Manufacture and Characteristic Analysis of Eddy Current Sensor for Bolt Hole Defect Evaluation," Korean Power Plant Journal, Vo. 15, No. 4, pp. 37-41, 2011.
  6. Heo, T. H., Cho, Y., Lee, J. H., Oh, J. S., and Lee, K. H., "Evaluation of Defects of Thermal Barrier Coatings by Thermal Shock Test using Eddy Current Testing," Journal of the Korean Society for Nondestructive Testing, Vol. 29, No. 5, pp. 450-457, 2009.
  7. Nam, M. W., Lee, H. J., Cho, C. H., and You, H. J., "Characteristics Testing of the ECT Bobbin Probe for Steam Generator Tube Inspection of Nuclear Power Plant," Journal of the Korean Society for Nondestructive Testing, Vol. 30, No. 4, pp. 386-395, 2010.