New Practice for Standard Practice for In-Situ Measurement of Lubricant Film Thickness in Lubricated Machine Elements Using Ultrasonic Reflection
1. Scope
1.1 This practice covers the in-situ measurement of lubricant film thickness in lubricated machine elements using ultrasonic reflection.
1.2 Primary Applications: This practice is primarily intended for measuring continuous fluid films in components such as fluid film bearings, mechanical seals, and linear guides.
1.3 Secondary Applications: This practice applies to rolling element bearings (e.g., cylindrical roller types).
1.4 This practice excludes complex geometries such as gear teeth meshes, where perpendicular sensor orientation cannot be maintained.
Industry lacks a standardized NDT method for in-situ lubricant film monitoring. This practice utilizes ultrasonic reflection techniques, primarily focusing on normal incidence, to provide quantitative measurements. While currently essential for validating product designs and optimization, this practice also establishes the technical foundation for future in-situ condition monitoring and predictive maintenance applications.
WK97951 - New Practice for Standard Practice for In-Situ Measurement of Lubricant Film Thickness in Lubricated Machine Elements Using Ultrasonic Reflection | ASTM
