Characterization of Biaxial Fatigue by Using Strain Energy Density Approach for Steel

Abstract:

This research discussed on the determination of the appropriate fatigue damage parameter to predict the fatigue life when material subjected to the biaxial loading condition with the consideration of the energy dissipated. Servo-hydraulic machine is used for the constant amplitude cyclic testing on smooth solid mild steel. The results showed that in the low cycle fatigue, the total strain energy density can represent the accumulative of fatigue damage and characterize on the damage parameters. The relationship has been proposed which the data satisfactorily correlated for the R² is 0.8656. In addition, the hysteresis loop represent the area under the graph was the energy stored in the material during the loading and unloading condition. Hence the circumstances showed the deformation process governing the nucleation and propagation of fatigue cracks associated with the energy dissipated.

• Periodical: Applied Mechanics and Materials (Volume 786)
• Pages: 126-130
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.786.126
• Online since: August 2015
• Authors: S.A.N. Mohamed, Shahrum Abdullah, Kamal A. Ariffin, Azli Arifin, Mahfodzah M. Padzi
• Keywords: Biaxial Loading, Fatigue Damage, Hysteresis Loop, Low Cycle Fatigue, Strain Energy Density

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