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Detection and Comparison of Surface Defects in Pipe Welds 원문보기

한국기계가공학회지 = Journal of the Korean Society of Manufacturing Process Engineers, v.19 no.1, 2020년, pp.43 - 48  

정윤수 (조선대학교 일반대학원 기계시스템.미래자동차공학과) ,  고가진 (조선대학교 일반대학원 기계시스템.미래자동차공학과) ,  안태형 (조선대학교 일반대학원 기계시스템.미래자동차공학과) ,  김재열 (조선대학교 기계시스템미래자동차공학부)

Abstract ▼ AI-Helper 아이콘AI-Helper

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, e...

주제어

#탄소강관   #용접부   #유한요소법   #적외선 열화상  

AI 본문요약
AI-Helper 아이콘 AI-Helper

* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.

제안 방법

  • For the experiment, a FLIR's T640 model infrared thermography camera was used with a 1kw of halogen lamp as a heat source to apply active inspection techniques.
  • In order to improve the reliability of preventative defect identification in carbon steel pipes, research on comparative verification was conducted through the IRT technique a type of —non-destructive testing and finite element analysis.
  • In order to perform the analysis of the test piece of the carbon steel straight pipe materials and flange connections, first the 3D design was created using the commercial program CATIA. Fig.
  • Therefore, the tester’s expected data values can be obtained[15~18]. Subsequently, the commercial program ANSYS was used to perform the finite element analysis.
  • The study’s objective is to detect damages on this test piece of the welded section ofthe carbon steel pipe through Infrared ThermographyTesting (IRT) and to enhance the pipe’s safety through a finite element comparative analysis.

대상 데이터

  • In this study, a test piece was produced by creating artificial defects on pipes made of carbon steel, which is the material used in nuclear power plant piping. In order to improve the reliability of preventative defect identification in carbon steel pipes, research on comparative verification was conducted through the IRT technique a type of —non-destructive testing and finite element analysis.
  • Carbon steel pipe materials, as used in nuclear power plant piping, were adopted to produce a test piece. The test piece was manufactured by welding a straight pipe and flange to a 65mm diameter with a 3mm thickness. After welding, artificial defects were added by drilling and marked with a red circle.
  • The FEM analytical program predicts temperature distribution and deformation and is capable of performing simulations. To conduct a thermal analysis of the carbon steel pipes, the commercial program ANSYS was used, and the mesh was set up with Nodes: 218,413 and Elements: 55,920. As with the experiment, the ambient temperature was set to 20℃, while the coefficient of heat transfer was 20W/m2℃and the heat flux was 800W/m2.
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참고문헌 (18)

  1. Yim, S. S., Kim, J. S., Ryu, Y. D., Lee, J. H., "A Study on the Residual Strength of the Carbon Steel pipe using in Fuel Gas", Journal of the Korean Institute of Gas, Vol. 20, No. 5, pp. 112-117, 2016. 

    원문보기 상세보기 crossref

  2. Park, D. K., Kim, J. Y., Gao, J. C., "A Study on the Performance Evaluation of Heat Treatment Furnace Design for Copper Tube Bending", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 15, No. 1, pp. 136-144, 2016. 

    원문보기 상세보기 crossref

  3. Choi, H. O., Jung, H. H., Kim, C. S., "Analytical Structural Integrity for Welding Part at Piping Penetration under Seismic Loads", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 13, No. 1, pp. 23-28, 2014. 

    원문보기 상세보기 crossref

  4. Park, S. B., Oh, J. T., Ju, Y. K., "Non-destructive Measurement Technique of Welding Using Infrared Thermography Technique", Journal of the Architectural Institute of Korea Structure & Construction, Vol. 33, No. 11, pp. 3-10, 2017. 

    원문보기 상세보기 crossref

  5. Song, S. E., Jeong, Y. C., Cho, Y. T., Jung, Y. G., "Development of Automatic Voltage Control Equipment using LabVIEW Software", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 16, No. 1, pp. 112-117, 2017. 

    원문보기 상세보기 crossref

  6. Chung, Y. J., Kim, W. T., Choi, W. J., "Measurement Uncertainty on Subsurface Defects Detection Using Active Infrared Thermographic Technique", Journal of the Korean Society for Nondestructive Testing, Vol. 35, No. 5, pp. 341-348, 2015. 

    원문보기 상세보기 crossref

  7. Kwon, D. J., Jung, N. R., Kim, J. Y., "Defect Detection of Carbon Steel Pipe Weld Area using Infrared Thermography Camera", Tribology and Lubricants, Vol. 30, No. 2, pp. 124-129, 2014. 

    원문보기 상세보기 crossref

  8. Jung, Y. S., Gao, J. C., Kim, J. Y., "Soundness Evaluation of 120W LED Lighting using Passive Infrared Thermal Imaging Method", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 16, No. 4, pp. 140-146, 2017. 

    원문보기 상세보기 crossref

  9. T. Zweschper, G. Riegert, A. Dillenz and G. Busse, "Ultrasound Burst Phase Thermography (UBP) for Applications in the Automotive Industry", Review of Progress in Quantitative Nondestructive, Vol. 657, pp. 531-536, 2003. 

  10. Choi. M. Y., Kang, K. S., Park, J. H., Kim, W. T., Kim, K. S., Measurement of Defects and Stress by Infrared Thermography", Journal of the Korean Society for Precision Engineering, Vol. 23, No. 10, pp. 30-35, 2006. 

  11. A. Gleiter, G. Riegert, T. Zweschper, G. Busse, "Ultrasound lock-in thermography for advanced depth resolved defect selective imaging", Insight - Non-Destructive Testing and Condition Monitoring, Vol. 49, pp. 272-274, 2007. 

    상세보기 crossref

  12. Kwon, S. J., Seo, J. W., Kim, J. C., Jun, H. K., "Defect Evaluation for Weld Specimen of Bogie Using Infrared Thermography", Journal of the Korean Society for Precision Engineering, Vol. 32, No. 7, pp. 619-625, 2015. 

    원문보기 상세보기 crossref

  13. T. Zweschper, G. Riegert, A. Dillenz and G. Busse, "Ultrasound Excited Thermography - Advances Due To Frequency Modulated Elastic Waves", Quantitative Infrared Thermography, Vol. 2-1, pp. 65-76, 2005. 

  14. Cho, J. W., Seo, Y. C., Jung, S. H., Jung, H. K., Kim, S. H., "A Study on Real-Time Defect Detection Using Ultrasound Excited Thermography", Journal of the Korean Society for Nondestructive Testing, Vol. 26, No. 4, pp. 211-219, 2006. 

  15. Lee, S. J., Park, W. K., Lee, S. T., Lee, W. Y., Ha, M. K., "Characteristics of Heat Generation in time of High-speed Machining using Infrared Thermal Imaging Camera", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 2, No. 3, pp. 26-33, 2003. 

  16. Choi, M. Y., Kim, W. T., "The Utilization of Nondestructive Testing and Defects Diagnosis using Infrared Thermography", Journal of the Korean Society for Nondestructive Testing, Vol. 24, No. 5, pp. 525-531, 2004. 

  17. Lee, S. T., Park, S. G., Choi, H. W., "CFRP Laser Joining Computer Simulation in a Parallel Kinematic Machine", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 16, No. 1, pp. 77-82, 2017. 

    원문보기 상세보기 crossref

  18. Lee, J. J., Kang, D. K., Suh, C. H., Lim, Y. H., Lee, K. H., Han, S. S., "Effect of Die Cooling Time on Component Mechanical Properties in a Front Pillar Hot Stamping Process", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 18, No. 6, pp. 33-38, 2019. 

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