The proceedings of the JSME annual meeting
Online ISSN : 2433-1325
2002.5
Conference information
High-Pressure Viscosity and Density Measurements of Lubricant oils for Tribo-CAD
Yuichi NAKAMURAKazuyuki SANDAYasushi KUROSAKI
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CONFERENCE PROCEEDINGS FREE ACCESS

Pages 159-160

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Abstract
In obtaining lubricant oils' properties under high pressure for tribo-CAD, a diamond-anvil pressure cell (DAC) was employed. A falling sphere viscometry in the DAC with appropriate heating system enabled the measurements up to 2 GPa at 200℃ for traction oils. Pressure-viscosity coefficient, which is important for EHL analysis and rolling fatigue estimation of machine elements, at 200℃ was 1/3 ∿ 1/4 smaller than that at 40℃. Density (volume) was obtained with DAC and with newly established laser confocal displacement sensor of 0.4μm resolution up to 6 GPa for several oils. Some high-pressure viscosity data are listed in web site homepage as databases, and anyone can access and utilize them for tribo-CAD.
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© 2002 The Japan Society of Mechanical Engineers
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