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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 71-78Low Cycle Fatigue Behavior of High-Strength...

Low Cycle Fatigue Behavior of High-Strength Structural Steel under Biased Strain Control

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Abstract:

The low cycle fatigue (LCF) behavior of high-strength structural steel under biased strain control has been investigated. Seven strain ratios with constant maximum strain amplitude were adopted. Significant cyclic softening and mean stress relaxation were observed in all cases. The fatigue life under biased strain control could be well predicted by Coffin-Manson relationship. Fractography by scanning electron microscopy was used to determine the LCF failure mechanisms and fatigue crack propagation modes.

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Periodical:

Applied Mechanics and Materials (Volumes 71-78)

Pages:

4020-4025

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.71-78.4020

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Online since:

July 2011

Authors:

Yun Rong Luo, Yi Guo, Qingyuan Wang, Yong Jie Liu

Keywords:

Biased Strain Control, Fatigue Life, High Strength Steel (HSS), Low Cycle Fatigue

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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