Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
권호 표지
DOI QR코드

DOI QR Code

Failure Criterion of Straight Pipe with Outer Local Wall Thinning under Internal Pressure

내압을 받는 외부 국부 감육 직관의 파손 기준

  • Kim, Soo-Young (UR Interdisciplinary program of Mechanical Engineering, Pukyong National University) ;
  • Nam, Ki-Woo (Materials Science and Engineering, Pukyong National University)
  • 김수영 (부경대학교(원) 학연협동기계공학과) ;
  • 남기우 (부경대학교 재료공학과)
  • Received : 2013.06.07
  • Accepted : 2013.08.06
  • Published : 2014.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

This study was carried out an experimental and finite element analysis on the fracture behavior of straight pipes with local wall thinning under internal pressure. Local wall thinning was machined on the pipes in order to simulate erosion/corrosion metal loss. The configurations of the eroded area has an eroded ratio of d/t=0.80~0.92 and an eroded length of l=25, 50 and 102 mm. Three-dimensional elastic-plastic analyses were also carried out using the finite element method, which is able to accurately simulate failure behaviors. In regards to the relation ship between pressure and eroded ratio, the criterion that can be used safely under operating pressure and design pressure were obtained from this calculation. The results of this calculation were in relatively good agreement with that of the experiment.

Keywords

References

  1. S. K. Park and Y. H. Lee, 2008, "Application of Thin-Walled Tubes Using Guided Wave", Journal of the Korea Society For Power System Engineering, Vol. 12, pp. 58-65.
  2. M. S. Sohn, W. R. Lee, S. K. Lee, J. S. Lee and S. K. Lee, 2003, "Identification of noise source from main steam line in power plant", Journal of the Korea Society For Power System Engineering, Vol. 7, pp. 23-28.
  3. K. W. Nam, S. H. Ahn, Y. S. Yoo and K. Ando, 2002, "Crack opening behavior of penetrated crack under cyclic or monotonic loading", Nuclear Engineering and Design, Vol. 214, pp. 221-229. https://doi.org/10.1016/S0029-5493(02)00034-1
  4. Y. S. Yoo, H. Shimano, S. H. Ji, K. Ando, A. Okamoto and K. Asao, 1999, "The Evaluation of LBB Behavior and Crack Opening Displacement on Statically Indeterminate Piping System Subjected to Monotonic Load", J. of High Pressure Institute of Japan, Vol. 37, No. 6, pp. 418-426.
  5. K. Matsumoto, S. Nakamura and N. Gotoh, 1991, "Study on Crack Opening Area and Coolant Leak Rates on Pipe Cracks", Int. J. Pres. ves. & Piping. Vol. 46, pp. 35-50. https://doi.org/10.1016/0308-0161(91)90067-C
  6. K. Hasegawa, A. Okamoto, H. Yokota, Y. Yamamoto, K. Shibata, T. Oshibe and K. Matsumura, 1991, "Crack Opening Area of Pressurized Pipe for Leak-Before-Break Evaluation", JSME. International Journal, Vol. 34, pp. 332-338.
  7. K. W. Nam, S. H. Ahn, Y. S. Yoo, K. Ando, S. H. Ji, M. Ishiwata and K. Hasegawa, 2002, "Fracture behavior of straight pipe and elbow with local wall thinning", Nuclear Engineering and Design, Vol. 211, pp. 91-103. https://doi.org/10.1016/S0029-5493(01)00447-2
  8. K. Miyazaki, A. Nebu, S. Kanno, M. Ishiwata and K. Hasegawa, 2002, "Study on Fracture Criterion for Carbon Steel Pipes with Local Wall Thinning", J. of High Pressure Institute of Japan, Vol. 40, No. 2, pp. 8-18.
  9. M. Shiratori, M. Yakura, N. Ogasawara, I. Nakamura and A. Otani, 2001, "Failure Analysis of Degraded Piping Against Seismic Loading", Trans. Japan Soc. Mech. Eng. A, Vol. 67, No. 654, pp. 209-215.
  10. J. F. Mathonet, J. M. Cherasse, C. L. Leblois and M. A. Guyrtee, 1995, "Belgian Methodology for Evaluation of Erosion Corrosion Phenomena in Units l, 2, 3 and 4 of the Doel Nuclear Power Plant(NPP)", ASME PVP, Vol. 304, pp. 393-399
  11. K. Hasegawa, S. Kanno, A. Hirano, N. Gotoh and T. Saito, 1992, "Acceptance Size of Erosion Thinning in Carbon Steel Pipes Subjected to Internal Pressure and Tensile Load", Journal of Nuclear Science and Technology, Vol.29, No. 11, pp. 1080-1085. https://doi.org/10.1080/18811248.1992.9731638
  12. S. H. Ahn, K. Ando, M. Ishiwata and K. Hasegawa, 1988, "Plastic Collapse Behavior of Pipes with Local Wall Thinning Subjected to Bending Load and Allowable Limit. 1st Report: Plastic Collapse Behavior of Pipes with Local Wall Thinning", Journal of High Pressure Institute of Japan, Vol. 36, No. 4, pp. 225-233.
  13. S. H. Ahn, K. C. Seok and K. W. Nam, 2007, "Study on Experimental Evaluation for Fracture Behavior of Carbon Steel Pipes for High Pressure Service with Local Wall Thinning", Key Engineering Materials, Vols. 345-346, pp. 1349-1352. https://doi.org/10.4028/www.scientific.net/KEM.345-346.1349
  14. S. H. Ahn, G. C. Seok and K. W. Nam, 2007, "Characteristics of Strength and Deformation of Inner/Outer Local Wall Thinned Straight Pipes", Key Engineering Materials, Vols. 353-358, pp. 559-562. https://doi.org/10.4028/www.scientific.net/KEM.353-358.559
  15. S. H. Ahn, K. C. Seok and K. W. Nam, 2007, "Effect of Local Wall Thinned Location due to Erosion-Corrosion on Fracture Behavior of Pipes", J. Ocean Engineering and Technology of Korea, Vol. 21, No. 1, pp. 75-80.
  16. M.S. Yoon, J. W. Kim and J. S. Kim, 2012, "Fatigue Failure Behavior of Pipe Bends with Local Wall-Thinning Under Cyclic Bending Condition", Trans. Korean Soc. Mech. Eng. A, Vol. 36, No. 10, pp. 1109-1295. https://doi.org/10.3795/KSME-A.2012.36.10.1109
  17. K. Miyazaki, S. Kanno, M. Ishiwata, K. Hasegawa, S. H. Ahn and K. Ando, 1999, "Fracture behavior of carbon steel pipe with local wall thinning subjected to bending load" Nuclear Engineering and Design, Vol. 191, pp. 195-204. https://doi.org/10.1016/S0029-5493(99)00141-7

Cited by

  1. Failure Behavior of T-joint Pipe with Outer Local Wall Thinning under Internal Pressure vol.18, pp.5, 2014, https://doi.org/10.9726/kspse.2014.18.5.080