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RESEARCH PAPERS

Biaxial Fatigue of A533B Pressure Vessel Steel

[+] Author and Article Information
D. V. Nelson, A. Rostami

Mechanical Engineering Department, Mailcode 4021, Stanford University, Stanford, CA 94305-4021

J. Pressure Vessel Technol 119(3), 325-331 (Aug 01, 1997) (7 pages) doi:10.1115/1.2842312 History: Received January 03, 1996; Revised September 19, 1996; Online February 11, 2008

Abstract

The low-to-intermediate cycle fatigue behavior of A533B steel is investigated using solid round bar specimens tested in combined bending and torsion. Loadings are applied in-phase and 90 deg out-of-phase to produce cases of proportional and nonproportional biaxial fatigue. Out-of-phase loadings are found to be more damaging than in-phase loadings. Two equivalent strain criteria similar to those in the ASME Boiler and Pressure Vessel Code and a newer approach based on cyclic plastic work are used to correlate fatigue lives. The equivalent strain criteria are found to underestimate the fatigue damage in out-of-phase tests, but to provide reasonably good correlations overall. The plastic work approach provides a conservative treatment of the out-of-phase data and somewhat better overall correlation. Cracking behavior observed during the tests is also summarized.

Copyright © 1997 by The American Society of Mechanical Engineers
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