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文件名称：Optical Interferometric EHL Oil Film Measurement
文件大小：616KB
文件格式：PDF
更新时间：2012-07-13 15:10:33
optical interferometry test, EHL, oil
A test apparatus was developed to measure the elastohydrodynamic lubrication (EHL) oil film thickness and
film shape for finite line contacts based on the principle of optical interferometry, which could be used to study
the oil film forming mechanism of roller bearings on pure rolling working conditions. The key problem of the
experiment is that the high quality interferograms could be caught continuously, that is depended on the
dynamic optical interferometric method, the smooth properties of driven and loading system of the test rig. A
local very flexible hydrostatic thrust bearing loading system and the coating layers techniques was used
successfully to reduce the tensile stress in glass disk, and overcome the unstable load caused by driving system
due to the inevitable error in the manufacture and assemble of the apparatus, and increase the refractive index
between the glass and oil interface. The results of actually measurement shown the variation of oil film shape
and film thickness in the contact area could be observed intuitively and recorded accurately by this test
apparatus. By comparing results of calculation and experiment, it was found the agreements between them are
quite coincident with each other.