125 弾性流体潤滑下におけるディンプル発生について : すきま方向温度分布計測による考察

概要

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This paper describes an explanation based on temperature variations across oil film of the dimple mechanism in EHL conditions. Experiments were carried out with a ball-on-disk type apparatus and temperatures of both the sliding surfaces and the oil films were measured by an improved infrared technique with two kinds of the infrared transmitting disk. Measuring the temperature of the disk surface, a disk coated by Cr layer on the contact surface was used in order to radiate infrared by itself as well as cut off the radiation from the ball surface and the oil film. When the temperature of the ball surface and the oil film, a disk which was not coated was used. Film thickness was measured by the optical interferometry technique. The temperature of the dimple was sometimes above 300K. The dimple formation can be explained by the viscosity wedge action estimated by the measured temperature differences between both the sliding surfaces.
社団法人日本機械学会の論文
2002-04-18