Rheological Study of Solidified Traction Oils under High Pressure by Observation of Deformed Microspheres
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概要
- 論文の詳細を見る
The rheological properties of solidified traction oils used in continuously variable transmissions (CVTs) under pressure were evaluated by observing large plastic deformation of metal microspheres (<I>φ</I> about 0.07 mm), occurring due to non-hydrostatic pressurization in these oils using a diamond-anvil pressure cell. The solidification pressure values obtained by observing aluminum sphere deformation were almost equal to those extrapolated from high-pressure viscosity; thus, aluminum sphere deformation experiments are effective for evaluating solidification pressure. Shear stresses of the solidified oils could be estimated up to 5 GPa from the deformed Cu spheres based on several assumptions. The stresses were almost equal to the mean shear stress obtained from a traction test between 1.0 GPa and 1.7 GPa and were below it for pressures above 1.7 GPa. The stress values varied little among different oils.
- 社団法人 日本トライボロジー学会の論文
著者
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Nakamura Yuichi
Division Of Cardiology Department Of Cardiovascular And Vital Control Niigata University Graduate Sc
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Matsui Masahito
Division of Physics Engineering, Graduate School of Engineering, Mie University
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Ito Sho
Graduate School of Engineering, Mie University
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