Experimental study on ratcheting-fatigue interaction of 20 carbon steel in uniaxial cyclic loading

Yujie Liu; Guozheng Kang; Yawei Dong

doi:10.1117/12.839064

24 August 2009 Experimental study on ratcheting-fatigue interaction of 20 carbon steel in uniaxial cyclic loading

Yujie Liu, Guozheng Kang, Yawei Dong

Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 73751K (2009) https://doi.org/10.1117/12.839064
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China

Abstract

The ratcheting behaviors and fatigue failure, as well as their interaction were investigated by uniaxial cyclic stressing tests for 20 carbon steel at room temperature. The ratcheting strain and fatigue life of the material were measured in varied loading levels. The effects of mean stress, stress amplitude and stress ratio on the ratcheting strain and final failure life were discussed. The experimental results show that the ratcheting strain and fatigue life of the material greatly depend on mean stress, stress amplitude and stress ratio in asymmetric stress cycling, and two kinds of failure modes (i.e., ratcheting failure due to large ratcheting strain and fatigue failure caused by the fatigue crack) occur respectively, depending on the applied stress level in the tests.

Citation Download Citation

Yujie Liu, Guozheng Kang, and Yawei Dong "Experimental study on ratcheting-fatigue interaction of 20 carbon steel in uniaxial cyclic loading", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73751K (24 August 2009); https://doi.org/10.1117/12.839064

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