2013 Fiscal Year Final Research Report
Development of a New Impact High Pressure Apparatus and Rheological Evaluations of Lubricating Oils under Dynamic Compression
| Project/Area Number |
23560160
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Mie University |
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Principal Investigator |
NAKAMURA Yuichi 三重大学, 工学(系)研究科(研究院), 准教授 (20164345)
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| Project Period (FY) |
2011 – 2013
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| Keywords | トライボロジー / 機械要素 / 物性実験 / 潤滑油 / 高圧力 |
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| Research Abstract |
A new impact high pressure apparatus was developed with a diamond-anvil pressure cell. Employing this apparatus and sphere deformation analysis method, solidification pressures and estimated traction coefficients of lubricating oils were obtained under milliseconds order impact dynamic compression up to 3 GPa. (Similar pressure in roller bearings) They were a little lower than those under the quasi-static compression condition, but were roughly the same as those. Consequently, although increments of equivalent strain and mean diameter of deformed metal spheres were at most a half smaller than those under the quasi-static compression condition, dynamic high pressure friction properties of solidified lubricating oils in rheological and mechanical viewpoints can be approximated by those under the quasi-static compression condition.
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