The leak-before-break (LBB) concept is based on the fracture resistance curve obtained by J-R tests on various types of specimens. But it has been also known that the fracture toughness data by various types of specimens are different each other. For example, the estimates for fracture toughness of standard specimens are conservative when compared to the fracture toughness of real pipes owing to the difference of the constraint effect between real pipes and standard specimens. Therefore for estimating the integrity of real pipes on the basis of elastic-plastic fracture mechanics, we have to first establish the relations among real pipes, standard CT specimens and curved CT specimens. In this study, we performed the fracture toughness tests for nuclear piping material by various types of specimen. And each J-R curve considered in the constraint effect was compared.
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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
Evaluation of Fracture Toughness Characteristic for Nuclear Piping Using Various Types of Specimens Available to Purchase
Soo Park,
Soo Park
Sungkyunkwan University, Suwon, Gyeonggi, Korea
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Sang-soo Yoo,
Sang-soo Yoo
Sungkyunkwan University, Suwon, Gyeonggi, Korea
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Jun-ki Min,
Jun-ki Min
Sungkyunkwan University, Suwon, Gyeonggi, Korea
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Jae-Mean Koo,
Jae-Mean Koo
Sungkyunkwan University, Suwon, Gyeonggi, Korea
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Chang-Sung Seok
Chang-Sung Seok
Sungkyunkwan University, Suwon, Gyeonggi, Korea
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Soo Park
Sungkyunkwan University, Suwon, Gyeonggi, Korea
Sang-soo Yoo
Sungkyunkwan University, Suwon, Gyeonggi, Korea
Jun-ki Min
Sungkyunkwan University, Suwon, Gyeonggi, Korea
Jae-Mean Koo
Sungkyunkwan University, Suwon, Gyeonggi, Korea
Chang-Sung Seok
Sungkyunkwan University, Suwon, Gyeonggi, Korea
Paper No:
PVP2010-25540, pp. 1195-1202; 8 pages
Published Online:
January 10, 2011
Citation
Park, S, Yoo, S, Min, J, Koo, J, & Seok, C. "Evaluation of Fracture Toughness Characteristic for Nuclear Piping Using Various Types of Specimens." 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. 1195-1202. ASME. https://doi.org/10.1115/PVP2010-25540
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