J-R fracture toughness of nuclear piping materials under excessive seismic loading condition

Jin Weon Kim; Sang Bong Lee; Myung Rak Choi; Yun Jae Kim

doi:10.1115/PVP2016-63456

J-R fracture toughness of nuclear piping materials under excessive seismic loading condition

Jin Weon Kim, Sang Bong Lee, Myung Rak Choi, Yun Jae Kim

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

This study investigated the loading rate effect on the fracture resistance under cyclic loading conditions to clearly understand the fracture behavior of piping materials under excessive seismic conditions. J-R fracture toughness tests were conducted under monotonic and cyclic loading conditions at various displacement rates at room temperature (RT) and the operating temperature of nuclear power plants (NPPs), i.e., 316°C. SA508 Gr. 1a lo w-alloy steel (LAS) and SA312 TP316 stainless steel (SS) piping materials were used for the tests. The fracture resistance under a reversible cyclic load was considerably lower than that under monotonic load regardless of test temperature, material, and loading rate. Under both cyclic and monotonic loading conditions, the fracture behavior of SA312 TP316 SS was independent of the loading rate at both RT and 316°C. For SA508 Gr. 1a LAS, the loading rate effect on the fracture behavior was appreciable at 316°C under both cyclic and monotonic loading conditions. However, the loading rate effect diminished when the cyclic load ratio (R) was -1. Thus, it was recognized that the fracture behavior of piping materials, including seismic loading characteristics, can be evaluated when tested under a cyclic load of R = -1 at a quasi-static loading rate.

Original language	English
Title of host publication	Materials and Fabrication
Publisher	American Society of Mechanical Engineers (ASME)
ISBN (Electronic)	9780791850428
DOIs	https://doi.org/10.1115/PVP2016-63456
Publication status	Published - 2016
Event	ASME 2016 Pressure Vessels and Piping Conference, PVP 2016 - Vancouver, Canada Duration: 2016 Jul 17 → 2016 Jul 21

Publication series

Name	American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume	6A-2016
ISSN (Print)	0277-027X

Other

Other	ASME 2016 Pressure Vessels and Piping Conference, PVP 2016
Country/Territory	Canada
City	Vancouver
Period	16/7/17 → 16/7/21

Bibliographical note

Funding Information:
This research was supported by National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT and Future Planning(NRF-2013M2A8A1040924) and the Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (20141520100860).

Publisher Copyright:
Copyright © 2016 by ASME.

ASJC Scopus subject areas

Mechanical Engineering

Access to Document

10.1115/PVP2016-63456

Cite this

Kim, J. W., Lee, S. B., Choi, M. R., & Kim, Y. J. (2016). J-R fracture toughness of nuclear piping materials under excessive seismic loading condition. In Materials and Fabrication (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6A-2016). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP2016-63456

J-R fracture toughness of nuclear piping materials under excessive seismic loading condition. / Kim, Jin Weon; Lee, Sang Bong; Choi, Myung Rak et al.
Materials and Fabrication. American Society of Mechanical Engineers (ASME), 2016. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6A-2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kim, JW, Lee, SB, Choi, MR & Kim, YJ 2016, J-R fracture toughness of nuclear piping materials under excessive seismic loading condition. in Materials and Fabrication. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, vol. 6A-2016, American Society of Mechanical Engineers (ASME), ASME 2016 Pressure Vessels and Piping Conference, PVP 2016, Vancouver, Canada, 16/7/17. https://doi.org/10.1115/PVP2016-63456

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abstract = "This study investigated the loading rate effect on the fracture resistance under cyclic loading conditions to clearly understand the fracture behavior of piping materials under excessive seismic conditions. J-R fracture toughness tests were conducted under monotonic and cyclic loading conditions at various displacement rates at room temperature (RT) and the operating temperature of nuclear power plants (NPPs), i.e., 316°C. SA508 Gr. 1a lo w-alloy steel (LAS) and SA312 TP316 stainless steel (SS) piping materials were used for the tests. The fracture resistance under a reversible cyclic load was considerably lower than that under monotonic load regardless of test temperature, material, and loading rate. Under both cyclic and monotonic loading conditions, the fracture behavior of SA312 TP316 SS was independent of the loading rate at both RT and 316°C. For SA508 Gr. 1a LAS, the loading rate effect on the fracture behavior was appreciable at 316°C under both cyclic and monotonic loading conditions. However, the loading rate effect diminished when the cyclic load ratio (R) was -1. Thus, it was recognized that the fracture behavior of piping materials, including seismic loading characteristics, can be evaluated when tested under a cyclic load of R = -1 at a quasi-static loading rate.",

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note = "Funding Information: This research was supported by National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT and Future Planning(NRF-2013M2A8A1040924) and the Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (20141520100860). Publisher Copyright: Copyright {\textcopyright} 2016 by ASME.; ASME 2016 Pressure Vessels and Piping Conference, PVP 2016 ; Conference date: 17-07-2016 Through 21-07-2016",

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N2 - This study investigated the loading rate effect on the fracture resistance under cyclic loading conditions to clearly understand the fracture behavior of piping materials under excessive seismic conditions. J-R fracture toughness tests were conducted under monotonic and cyclic loading conditions at various displacement rates at room temperature (RT) and the operating temperature of nuclear power plants (NPPs), i.e., 316°C. SA508 Gr. 1a lo w-alloy steel (LAS) and SA312 TP316 stainless steel (SS) piping materials were used for the tests. The fracture resistance under a reversible cyclic load was considerably lower than that under monotonic load regardless of test temperature, material, and loading rate. Under both cyclic and monotonic loading conditions, the fracture behavior of SA312 TP316 SS was independent of the loading rate at both RT and 316°C. For SA508 Gr. 1a LAS, the loading rate effect on the fracture behavior was appreciable at 316°C under both cyclic and monotonic loading conditions. However, the loading rate effect diminished when the cyclic load ratio (R) was -1. Thus, it was recognized that the fracture behavior of piping materials, including seismic loading characteristics, can be evaluated when tested under a cyclic load of R = -1 at a quasi-static loading rate.

AB - This study investigated the loading rate effect on the fracture resistance under cyclic loading conditions to clearly understand the fracture behavior of piping materials under excessive seismic conditions. J-R fracture toughness tests were conducted under monotonic and cyclic loading conditions at various displacement rates at room temperature (RT) and the operating temperature of nuclear power plants (NPPs), i.e., 316°C. SA508 Gr. 1a lo w-alloy steel (LAS) and SA312 TP316 stainless steel (SS) piping materials were used for the tests. The fracture resistance under a reversible cyclic load was considerably lower than that under monotonic load regardless of test temperature, material, and loading rate. Under both cyclic and monotonic loading conditions, the fracture behavior of SA312 TP316 SS was independent of the loading rate at both RT and 316°C. For SA508 Gr. 1a LAS, the loading rate effect on the fracture behavior was appreciable at 316°C under both cyclic and monotonic loading conditions. However, the loading rate effect diminished when the cyclic load ratio (R) was -1. Thus, it was recognized that the fracture behavior of piping materials, including seismic loading characteristics, can be evaluated when tested under a cyclic load of R = -1 at a quasi-static loading rate.

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J-R fracture toughness of nuclear piping materials under excessive seismic loading condition

Abstract

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