Abstract

The paper contains the biaxial fatigue test results of specimens with round cross-section, made of 10HNAP steel. The tests under cyclic bending and torsion were carried out for the following ratios of normal to shear stresses amplitudes σa / τa = 0.5, 1, 2 and the loading frequency was 26.5 Hz. The tests were performed in the high cycle fatigue regime for the stress ratio R = - 1 and phase shift between bending and torsion equal to φ = 0 and 90°.

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