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Many studies on gear have been done in the past, and many papers have been published.<BR>However many of them were on the theory of gear shape, the problems on pitting and scouring, on vibration, and the prevention of noise, a few study has been conducted on fatigue strength of gear.<BR>In this paper the fatigue strength of the large sized reduction gear used in marine-transmission is discussed, and summarized as follows;<BR>1) Fatigue test results with the smooth and notched specimen of the actually used material having 1% Cr-Mo and 3% Cr-Mo, and on the influence of heat treatment on the fatigue strength were given.<BR>2) The method of estimating the stress-number of frequency curve for the fatigue life prediction was proposed.<BR>3) The method of fatigue life prediction was proposed, and was dependent on the combination of S-N curves and stress-number of frequency curves.<BR>4) The problems on the fatigue strength of gear to study in future were also explained.
- 公益社団法人 日本マリンエンジニアリング学会の論文