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Effect of Contact Pressure and Cyclic Stress Amplitude on Fretting Fatigue of 45-Carbon Steel

Journal Key Engineering Materials (Volumes 353 - 358)
Volume Progresses in Fracture and Strength of Materials and Structures
Edited by Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages 134-137
DOI 10.4028/www.scientific.net/KEM.353-358.134
Citation Wei Ming Sun et al., 2007, Key Engineering Materials, 353-358, 134
Online since September, 2007
Authors Wei Ming Sun, Shui Sheng Chen, Li Qun Tu
Keywords Contact Pressure, Fatigue Life, Fretting Fatigue, Strain Field, Stress Field
Abstract

The effect of contact pressure on fretting fatigue in quenched and tempered 45-carbon steel is studied. With an increase in contact pressure, fretting fatigue life is decreased quickly at low contact pressures; however it almost unchanged at high contact pressures. With an increase in cyclic stress amplitude, fretting fatigue life decreased. In the test, concavity is formed at the fretted area accompanying wear. The main crack is initiated at the outer edge corner of the concavity at high contact pressures, and initiated at the middle portion of the fretted area at low contact pressures.

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