Machines. Technologies. Materials.
Vol. 16 (2022), Issue 4, pg(s) 146-149

MATERIALS

Strain controlled fatigue of 40X steel

  • 1 Institute of Mechanics at the Bulgarian Academy of Sciences, Sofia, Bulgaria
  • 2 Institute of Mechanics at the Bulgarian Academy of Sciences, Sofia, Bulgaria; Institute of Metal Science, equipment, and technologies with Center for Hydro- and Aerodynamics “Acad. A. Balevski” at the Bulgarian Academy of Sciences, Sofia, Bulgaria
  • 3 Institute of Metal Science, equipment, and technologies with Center for Hydro- and Aerodynamics “Acad. A. Balevski” at the Bulgarian Academy of Sciences, Sofia, Bulgaria

Abstract

The fatigue strength of 40X steel at 25 oC was determined following ASTM E606M standard for strain-controlled tests. The studied experimental dependence was modelled with a power function as well as with the functions and coefficients described in the standard. The material expresses plastic properties for cyclic loadings above 0.2% strain amplitude.

Keywords

References

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