| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
Hydrodynamic lubrication is the most preferable state in sliding surfaces in machines. The purpose of this research was to grasp the ultra-thin oil film behaviour on the textured surface under vertical vibration that simulates repeating squeeze motion. The target oil film was formed between steel ball and flat glass plate. A lot of microdimples were previously created on the glass plate. The oil film behaviour under squeezing motion was observed by means of optical interferometry with two-color light. The experiment showed that the oil film shape in the contact circle under squeezing motion changed due to the existence of microdimples. Particularly, when the glass surface with 500 nm-depth microdimples was used, the oil film became thicker and the contact area became smaller than that when the non-textured surface was used.
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