A Study of Selected Parameters Influencing Lubricant Load-Carrying Capacity Determination

摘要

The Standard Method of Test for Load-Carrying Capacity of Fluid Gear Lubricants, American Society for Testing and Materials Designation D1947, controls the procedure, test rigs, test items, and reporting methods with respect to evaluating lubricant gear load capacity. Prior to evaluation of U.S. gas turbine engine lubricants, the rigs and associated devices are performance checked with a standard lubricant, Reference Oil C. Observations of these calibration data have shown the mean gear load capacity to be nonuniform. Further, the data is believed to be excessively scattered. As a result, this program was undertaken to determine the effect of test gears manufactured at two different points in time, the type of lubricant, and the test rig configuration upon gear load capacity. Statistical analysis of program data reveals the test gears and the type of lubricant to be, with 95% confidence, the sources of variation.