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Validation Testing of Heavy Duty Oil Bath Seals - Data Acquisition and Simulation of Seal Motions
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English
Abstract
To advance the present state-of-the-art of testing oil lubricated truck wheel hub seals (hereafter referred to as oil bath seals) from fairly simple tests which allow static offset in the radial direction towards real-time road simulation, an investigative test development project was initiated. Combining the know-how and resources of manufacturers of oil bath seals and servohydraulic test equipment, a more realistic approach to seal testing was to be developed. Of importance to the project was the successful development of a five degree of freedom motion transducer used to measure the relative motion of the hub vs. the spindle in the seal location.
Conducting extensive proving ground measurements and analyzing the data allowed the generation of a test sequence typical for the seal application. A special computer controlled servohydraulic test machine was designed and built which is capable of real-time simulation of the five degrees of motion acquired on the road.
A validation test program was started comparing different seal designs in terms of their longevity.
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Citation
Neugebauer, J., Bloxsom, K., Diehr, J., and Pahios, M., "Validation Testing of Heavy Duty Oil Bath Seals - Data Acquisition and Simulation of Seal Motions," SAE Technical Paper 920712, 1992, https://doi.org/10.4271/920712.Also In
References
- Jacoby, G. Mechanical Testing in the Automotive Industry Schenck Publication PAB-PT ll/2e
- Inductive Contactless Transducer TR Data sheet D25 021e Hottinger Baldwin Measurements, Inc.
- Grubisic, V. Fischer, G. Automotive Wheels, Method and Procedure for Optimal Design and Testing SAE Technical Paper Series 830135 International Congress and Exposition Detroit 1983
- Neugebauer, J. Grubisic, V. Fischer, G. Procedure for Design Optimization and Durability Life Approval of Truck Axles and Axle Assemblies SAE Technical Paper Series 892535 1989