In this paper, a prediction of V-factor, the correction factor for the plasticity interaction between the primary stress and secondary stress, for the cracked pipe under combined mechanical and thermal stresses with significant elastic follow-up is presented. Recently, present authors suggested enhanced V-factor solution using failure assessment curve, which is less conservative than R6 code. However, this solution is limited to weak elastic follow-up condition. The degree of elastic follow-up is related to the variations of Vo with β according to this study. Based on this observation, a prediction solution for the V-factor which can be applied to the crack assessment ranging from weak elastic follow-up condition to strong elastic follow-up condition is proposed.
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ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
July 18–22, 2010
Bellevue, Washington, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-49255
PROCEEDINGS PAPER
A Prediction of V-Factor for the Cracked Pipe Under Combined Mechanical and Thermal Stresses With Elastic Follow-Up
Tae-Kwang Song,
Tae-Kwang Song
Korea University, Seoul, Korea
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Chang-Young Oh,
Chang-Young Oh
Korea University, Seoul, Korea
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Robert A. Ainsworth,
Robert A. Ainsworth
British Energy Generation Ltd., Gloucester, UK
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Kamran Nikbin
Kamran Nikbin
Imperial College London, London, UK
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Tae-Kwang Song
Korea University, Seoul, Korea
Kuk-Hee Lee
Korea University, Seoul, Korea
Chang-Young Oh
Korea University, Seoul, Korea
Yun-Jae Kim
Korea University, Seoul, Korea
Robert A. Ainsworth
British Energy Generation Ltd., Gloucester, UK
Kamran Nikbin
Imperial College London, London, UK
Paper No:
PVP2010-25260, pp. 91-95; 5 pages
Published Online:
January 10, 2011
Citation
Song, T, Lee, K, Oh, C, Kim, Y, Ainsworth, RA, & Nikbin, K. "A Prediction of V-Factor for the Cracked Pipe Under Combined Mechanical and Thermal Stresses With Elastic Follow-Up." Proceedings of the ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B. Bellevue, Washington, USA. July 18–22, 2010. pp. 91-95. ASME. https://doi.org/10.1115/PVP2010-25260
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