The measurement of oil film thickness versus time under impact loading conditions.
Hydinger, Robert Marlin
Gatcombe, Ernest K.
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The thickness of lubricant films under impact loading conditions has been measured as a function of time by passing a collimated beam of light through the film, detecting the emerging rays with a photomultiplier tube, and displaying the transient waveform on a cathode ray oscilloscope. It is shown that rotative speed is the dominant variable in the determination of film thickness in the contact area of rolling cylinders. Plateau Time is defined as the time period during which minimum film thickness is maintained at the contact area and is interpreted as a measure of the "oiliness" of a lubricant.
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