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TECHNICAL PAPERS

Effects of Water Flow Rate on Fatigue Life of Carbon Steel in Simulated LWR Environment Under Low Strain Rate Conditions

[+] Author and Article Information
Akihiko Hirano

Mechanical Engineering, Research Laboratory, Hitachi, Ltd., Hitachi, Ibaraki, Japan

Michiyoshi Yamamoto

Power and Industrial Systems, Nuclear System Division, Hitachi, Ltd., Hitachi, Ibaraki, Japan

Katsumi Sakaguchi

Japan Power Engineering and Inspection Corporation, Hitachinaka, Ibaraki, Japan

Tetsuo Shoji

Tohoku University, Sendai, Miyagi, Japan

Kunihiro Iida

University of Tokyo, Koshigaya, Saitama, Japan

J. Pressure Vessel Technol 125(1), 52-58 (Jan 31, 2003) (7 pages) doi:10.1115/1.1460906 History: Received January 01, 2001; Revised November 02, 2001; Online January 31, 2003
Copyright © 2003 by ASME
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References

Figures

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Cross-sectional view of the test specimen and the water flow path
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Schematic illustration of the testing system
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Effect of water flow rate on fatigue life (strain amplitude: 0.3 %, strain rate: 0.4 %/s)
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Effect of water flow rate on fatigue life (strain amplitude: 0.3 %, strain rate: 0.01 %/s)
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Effect of water flow rate on crack initiation and propagation behavior at a strain rate of 0.01 %/s
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Illustration of one of the major effects of water flow rate on fatigue crack initiation in high-temperature water
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Fracture surface of a crack initiation site (water flow rate: 0.1 m/s)—(a) macroscopic view of the fracture surface; (b) magnified image of the crack initiation site
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Fracture surface of a crack initiation site (water flow rate: 7 m/s)—(a) macroscopic view of the fracture surface; (b) magnified image of the crack initiation site
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Effect of water flow rate on fatigue life (strain amplitude: 0.3 %, strain rate: 0.001 %/s)
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Effect of water flow rate on fatigue life (strain amplitude: 0.6 %, strain rate: 0.001 %/s)
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Effect of strain rate on fatigue life for various water flow rate conditions (DO: 1 ppm)
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Effect of strain rate on fatigue life for various water flow rate conditions (DO: 0.2 ppm)
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Effect of strain rate on fatigue life for various water flow rate conditions (DO: 0.05 ppm)

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