Abstract
Two kinds of the as-received and the heat treated structural steel, the nickel chromium alloy and the copper alloy were selected for this investigation. The rolling contact fatigue tests with specific sliding 0, 3, 9, 20 and 30% were carried out measuring tangential force. The pulsating compression fatigue tests and the completely reversed torsion fatigue tests were carried out too. The effect of tangential force on the fatigue limit under the rolling contact fatigue were investigated. The relationships of the fatigue limit among the rolling contact fatigue, the pulsating compression fatigue and the completely reversed torsion fatigue were examined on the basis of the stress analyses under the contact surface. Then the fatigue limit ps under the rolling contact fatigue could be estimated from the tensile strength σB, the yield stress σB, Young's modulus E and the coefficient of friction μ as ps=0.07σB√(E/σy)(1-3μ).
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