Damage Mechanics Considerations for Life Extension of High-Temperature Components

[+] Author and Article Information
Xiang Ling, Shan-Tung Tu, Jian-Ming Gong

Department of Mechanical Engineering, Nanjing University of Chemical Technology, Nanjing 210009, People’s Republic of China

J. Pressure Vessel Technol 122(2), 174-179 (Dec 15, 1999) (6 pages) doi:10.1115/1.556167 History: Received June 17, 1999; Revised December 15, 1999
Copyright © 2000 by ASME
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Two-bar system—(a) a two-bar structure, (b) FEM mesh
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Stress redistribution in the two-bar structure
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Damage development before and after the replacement of bar 1 (L2/L1=5)
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Life extension efficient versus repair time
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The steady stress distribution across the wall at the knuckle
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Damage distribution along the thickness of cylinder at t=tr
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Relative creep exhaustion in a weldment
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Damage distribution and effective temperature of the tube



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