| 摘要 |
<p>A method and apparatus for measuring thickness and traction properties of a elastohydrodynamic lubricant (EHL) films is described. The apparatus utilizes at least one ball or roller (64) loaded against the internal diameter of a transparent ring (19) having a larger radius than the ball or roller (64). A lubricant is placed between the rotating roller (64) and the ring (19) thereby forming an EHL film where the ball and the ring contact. Roller (64) and ring (19) rotating speeds are controlled (10, 20) to obtain different amounts of sliding motion between their surfaces. Contact between the surfaces and the resulting film are observed via the transparent ring (19) which allows optical measurements of lubricating film thickness. Traction forces generated during contact are measured by any suitable measuring device (98).</p> |
