Fatigue crack growth data obtained in the simulated BWR water environment were analyzed to establish a formula for reference fatigue crack growth rate (FCGR) of austenitic stainless steels in BWR water. The effects of material, mechanical and environmental factors were taken into the reference curve, which was expressed as: where is fatigue crack growth rate in m/cycle, is load rising time in seconds, ΔK is range (double amplitude) of K–value in and R is stress ratio. if and if cannot be defined. if if The proposed formula provides conservative FCGR at low stress ratio. Although only a few data show higher FCGR than that by proposed formula at high these data are located in a wide scatter range of FCGR and are regarded to be invalid. The proposed formula is going to be introduced in the Japanese Plant Operation and Maintenance Standard.
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e-mail: masao.itatani@toshiba.co.jp
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Technical Papers
Fatigue Crack Growth Curve for Austenitic Stainless Steels in BWR Environment
M. Itatani,
e-mail: masao.itatani@toshiba.co.jp
M. Itatani
Power and Industrial Systems R&D Center, Toshiba Corporation, Yokohama, Kanagawa, 230-0045, Japan
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M. Asano,
M. Asano
Power and Industrial Systems R&D Center, Toshiba Corporation, Yokohama, Kanagawa, 230-0045, Japan
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M. Kikuchi,
M. Kikuchi
Isogo Nuclear Engineering Center, Toshiba Corporation, Yokohama, Kanagawa, 235-0032, Japan
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S. Suzuki,
S. Suzuki
Power Engineering R&D Center, Tokyo Electric Power Company, Yokohama, Kanagawa, 230-8510, Japan
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K. Iida,, Professor Emeritus of The University of Tokyo
K. Iida,, Professor Emeritus of The University of Tokyo
Saitama, 343-0044, Japan
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M. Itatani
Power and Industrial Systems R&D Center, Toshiba Corporation, Yokohama, Kanagawa, 230-0045, Japan
e-mail: masao.itatani@toshiba.co.jp
M. Asano
Power and Industrial Systems R&D Center, Toshiba Corporation, Yokohama, Kanagawa, 230-0045, Japan
M. Kikuchi
Isogo Nuclear Engineering Center, Toshiba Corporation, Yokohama, Kanagawa, 235-0032, Japan
S. Suzuki
Power Engineering R&D Center, Tokyo Electric Power Company, Yokohama, Kanagawa, 230-8510, Japan
K. Iida,, Professor Emeritus of The University of Tokyo
Saitama, 343-0044, Japan
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division, April 17, 2000; revised manuscript received December 19, 2000. Associate Editor: M. B. Ruggles.
J. Pressure Vessel Technol. May 2001, 123(2): 166-172 (7 pages)
Published Online: December 19, 2000
Article history
Received:
April 17, 2000
Revised:
December 19, 2000
Citation
Itatani, M., Asano, M., Kikuchi, M., Suzuki, S., and Iida, , K. (December 19, 2000). "Fatigue Crack Growth Curve for Austenitic Stainless Steels in BWR Environment ." ASME. J. Pressure Vessel Technol. May 2001; 123(2): 166–172. https://doi.org/10.1115/1.1358841
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