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TECHNICAL PAPERS

A Probabilistic Assessment of the Design S-N Curves for 1Cr18Ni9Ti Pipe-Welded Joint

[+] Author and Article Information
Y. X. Zhao

Institute of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, People’s Republic Chinae-mail: yxzhao@home.swjtu.edu.cn

J. Pressure Vessel Technol 125(2), 195-200 (May 05, 2003) (6 pages) doi:10.1115/1.1556857 History: Received August 03, 2001; Revised November 25, 2002; Online May 05, 2003
Copyright © 2003 by ASME
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References

Figures

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Schematic diagrams of (a) the welded pipe, and (b) the specimen (dimensions in mm)
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Saturation hysteresis loops of the material at the six test strain levels
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Test ε-N and S-N data of 1Cr18Ni9Ti pipe-welded joint at temperature of 240°C
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P-S-N relations for the test data of 1Cr18Ni9Ti pipe-welded joint (P is survival probability)
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Confidence bounds at a significance level of 0.05 (confidence of 95%) to the test data
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S-N curve with a factor of 20 on cycles decrease applied to the best-fit curve of the test data
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S-N curve with a factor of 2 on stress decrease applied to the best-fit curve of the test data
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S-N curve with a factor of 2.5 on stress decrease applied to the best-fit curve of the test data
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Standard deviation of the log N versus stress amplitude of the test data

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