Effects of Stress Ratio and Fretting Fatigue Cycles on the Accumulation of Fretting Fatigue Damage of Carbon Steel S 45 C

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概要

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• Fretting fatigue damage formation in carbon steel S45C has been examined by using an interrupted fretting fatigue testing method, which consists of two-stage fatigue loading. The first stage is fatigue loading with fretting under one of the stress ratios R= -1, 0, 0.33 and 0.5, and the second stage is fatigue loading without fretting under R= 0.5. The minimum number of cycles, N_<cr>, in the first stage which caused a break in the second stage was 7.5 × 10^4, and was independent of R. The damage layer at N_<cr> was about one grain size, and was hardened due to the formation of fine cell structures. It was concluded that the fretting fatigue damage is accumulated in the early cycles of fretting, and does not depend on R.

• 一般社団法人日本機械学会の論文

著者

• Fujii Hajime

  Faculty Of Engineering Chiba University

• SATO Kenkichi

  Faculty of Engineering, Chiba University

• KODAMA Shotaro

  Faculty of Technology, Tokyo Metropolitan Univ.

• Sato Kenkichi

  Faculty Of Engineering Chiba University

• Kodama Shotaro

  Faculty Of Technology Tokyo Metropolitan University

• Kodama Shotaro

  Faculty Of Technology Tokyo Metropolitan Univ.

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