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Development of Local Failure Criteria for Well Thinning Defect by Simulated Specimen Tests

모사시편 시험을 통한 감육결함 국부손상기준 개발

  • 김진원 (조선대학교 원자력공학과) ;
  • 김도형 (조선대학교 원자력공학과) ;
  • 박치용 (한전 전력연구원 원전기계재료그룹) ;
  • 이성호 (한전 전력연구원 원전기계재료그룹)
  • Published : 2007.03.01

Abstract

The objective of this study is to develop a local failure criterion for a wall thinning defect of piping components. For this purpose, a series of tensile tests was performed using several types of simulated specimens with different stress states, including smooth round bar, notched round bar (five different notch radii), and grooved plate (three different groove radii). In addition, finite element (FE) simulations were performed on the simulated specimen tests and the results were compared with the test results. From the comparisons, the equivalent stress and strain corresponding to maximum load and final failure of notched specimens were proposed as failure criteria under tensile load. The criteria were verified by employing them to the estimation of failure of grooved plate specimens that simulate the wall thinning defect. It showed that the proposed criteria accurately estimate the maximum load and final failure of grooved plate specimen tests.

Keywords

Local Failure Criterion;Simulated Specimen Test;Wall Thinning Defect;Finite Element Simulation

References

  1. Chexal, B., Horowitz, J., Dooley, B., Millett, P., Wood, C. and Jones, R., 1998, 'Flow-Accelerated Corrosion in Power Plant,' EPRI/TR-106611-R2
  2. Frank, M., Hans, R., and Helmut, S., 2001, 'Experience with Piping in German NPPs with Respect to Ageing-Related Aspects,' Nucl. Eng. & Des., Vol. 207, pp. 307-316 https://doi.org/10.1016/S0029-5493(01)00339-9
  3. Colson, K.E.W. and Worthington, R.G., 1990, 'New Guidelines Promise More Accurate Damage Assessment,' Gas & Oil J., Vol. 32, pp. 41-44
  4. Kiefner, J.F. and Vieth, P.H., 1990, 'New method corrects criterion for evaluating corroded pipe,' Oil Gas J., Vol. 32 pp. 56-59
  5. Deardorff, A.F. and Bush, S.H., 1990, 'Development of ASME Section XI Criteria for Erosion-Corrosion Thinning of Carbon Steel Piping,' PVP-Vol-186, NDE-Vol. 7, pp. 71-75
  6. Miyazaki, K., Kanno, S., Ishiwata, M., Hasegawa, K., Ahn, S.H., and Ando K., 1999, 'Fracture Behavior of Carbon Steel Pipe with Local Wall Thinning Subjected to Bending Load,' Nucl. Eng. & Des., Vol. 191, pp. 195-204 https://doi.org/10.1016/S0029-5493(99)00141-7
  7. Wildowski, G., Stephens, D., Krishnaswamy, P., Leis, B., and Rudland D., 2000, 'Progress in Development of Acceptance Criteria for Local Tinned Areas in Pipe and Piping Components,' Nucl. Eng. & Des., Vol. 195, pp. 149-169 https://doi.org/10.1016/S0029-5493(99)00245-9
  8. Roy, S., Grigory, S., Smith, M., Kannunen, M.F., and Anderson, M., 1997, 'Numerical Simulations of Full-Scale Corroded Pipe Tests with Combined Loading,' J. Press. Ves. Tech., Vol.119, pp. 457-466 https://doi.org/10.1115/1.2842330
  9. Bao, Y., 2005, 'Dependence of Ductile Crack Formation in Tensile Tests on Stress Triaxiality, Stress and Strain Ratios,' Eng. Frac. Mech., Vol. 72, pp. 505-522 https://doi.org/10.1016/j.engfracmech.2004.04.012
  10. Mackenzie, A., Hancook, J., and Brown, D., 1977, 'On the Influence of State of Stress on Ductile Failure Initiation in High Strength Steels,' Eng. Frac. Mech., Vol. 9, pp. 167-188 https://doi.org/10.1016/0013-7944(77)90062-5
  11. Samal, M.K., Dutta, B.K., and Kushwaha, H.S., 1999, 'A Study on Ductile Fracture Initiation in the PHT Piping Material of an Indian PHWR Using Local Approach,' Int. J. Press. Ves. and Piping, Vol. 76, pp. 319-330 https://doi.org/10.1016/S0308-0161(98)00118-5
  12. American National Standards Institute/American Society of Mechanical Engineer, B31G, 1991ed., 'Manual for Determinating the Remaining Strength of Corroded Pipelines'
  13. Shim, D.J., Choi, J.B, Kim, Y.J., Kim, J.W., and Park, C.Y, 2003, 'Assessment of Local Wall Thinned Pipeline Under Combined Bending and Pressure,' Int. J. Mod. Phy. B, Vol. 17, pp. 1870-1876 https://doi.org/10.1142/S0217979203019800
  14. Kim, J.W., Na, M.G., and Park, C.Y., 2005, 'Development of Failure Pressure Evaluation Model for Internally Wall Thinned Piping Components,' Trans. of KSME (A), Vol. A29, No 7, pp. 947-954 https://doi.org/10.3795/KSME-A.2005.29.7.947
  15. Kim, J.W. and Park, C.Y., 2003, 'Criterion for Failure of Internally Wall Thinned Pipe Under a Combined Pressure and Bending Moment,' Trans. of SMiRT-17, Paper #G07-5, Prague, Czech Republic, Aug. 17-22
  16. Fu, B. and Kirkwood, M.G., 1995, 'Predicting Failure Pressure of Internally Corroded Linepipe Using the Finite Element Method,' OMAE-Vol.V, Pipeline Tech., ASME
  17. ABAQUS Users Manual, version 6.5, Hibbitt, Karlson & Sorensen, 2005
  18. Japan Atomic Energy Research Institute, 1993, 'Technical Report on the Piping Reliability Tests at the Japan Atomic Energy Research Institute,' JAERI-M, 93-074, pp. 104-115
  19. Kim, J.W. and Park, C.Y., 2003 'Effect of Length of Thinning Area on the Failure Behavior of Carbon Steel Pipe Containing a Defect of Wall Thinning,' Nucl. Eng. & Des., Vol. 220, pp. 274-284 https://doi.org/10.1016/S0029-5493(02)00386-2
  20. Garrison, W.R.Jr. and Moody, N.R., 1987, 'Ductile Fracture,' J. Phy. and Chem. of Solids, Vol. 48, pp. 1035-1074 https://doi.org/10.1016/0022-3697(87)90118-1
  21. Choi, J.B., Goo, B.K., Kim, J.C., Kim, .Y.J., and Kim, W.S., 2003, 'Development of Limit Load Solutions for Corroded Gas Pipelines,' Int. J. Press. Ves. and Piping, Vol.80, pp. 121-128 https://doi.org/10.1016/S0308-0161(03)00005-X
  22. Zhang, J.X. et al., 1998, 'The Study on Ductile Fracture of the Over-Matched Weldment with Mechanical Heterogeneity,' Int. J. Press. Ves. and Piping, Vol. 75, pp. 773-776 https://doi.org/10.1016/S0308-0161(98)00082-9

Cited by

  1. Validation of a Local Failure Criteria Using the Results of Wall-Thinned Pipe Failure Tests vol.33, pp.12, 2009, https://doi.org/10.3795/KSME-A.2009.33.12.1393