Dr. Jude A. Osara is an assistant professor in the Surface Technology & Tribology (STT) and Tribology Based Maintenance (TBM) research areas in the department of Mechanics of Solids, Surfaces and Systems (MS3). He obtained his PhD in Mechanical Engineering - Thermal/Fluids Systems at the University of Texas at Austin, Texas, USA, with a dissertation on "degradation thermodynamics", an approach he applied to lubricant grease degradation and general fatigue, among others. Prior to his PhD degree, Jude worked in the automotive industry as a thermal/fluids engineer optimizing engine performance, and as an applied mechanics engineer analyzing/optimizing lubrication and structural integrity of engine overhead systems. Between 2017 and 2020, Dr. Osara further developed his PhD research discovery into engineering analysis tools for industrial use, while doing stints as a post-doctoral fellow and an adjunct professor at the University of Texas at Austin. At UT Austin, Dr. Osara taught Applied Thermodynamics and Fluid Mechanics. Currently, he teaches Tribology, and his research focuses on bearing grease and solid interfacial degradation, life models, failure mechanisms, and materials, all of which he applies his thermodynamics expertise to. Dr. Osara also manages the SKF University Technology Centre (UTC) for Grease Lubrication.
Physics & Astronomy
# Degradation # Greases # Thermodynamics
Engineering & Materials Science
# Degradation # Entropy # Lubricating Greases # Thermodynamics
- Lubricating Greases, Bearings, Frictional and Tribological Interfaces.
- Thermodynamic Characterization of Tribological Systems.
- Mechanics of Solids, Semi-Solids and Fluids.
- Failure Mechanisms and Prediction.
Sathwik Chatra, K. R. , Osara, J. A. , & Lugt, P. M. (2023). The lubrication mechanism behind the transition from churning to bleeding in grease lubricated bearings – Experimental characterization. Tribology international, 183, Article 108375. https://doi.org/10.1016/j.triboint.2023.108375
Sathwik Chatra, K. R. , Osara, J. A. , & Lugt, P. M. (2023). Thermo-mechanical aging during churning in grease lubricated bearings and its impact on grease life. Tribology international, 181, Article 108248. https://doi.org/10.1016/j.triboint.2023.108248
K R, S. C. (2023). The process of churning in grease lubricated bearings: Identification and Thermo-mechanical characterization. [PhD Thesis - Research UT, graduation UT, University of Twente]. University of Twente. https://doi.org/10.3990/1.9789036555081
Chatra, K. R. S. , Osara, J. A. , & Lugt, P. M. (2022). Impact of grease churning on grease leakage, oil bleeding and grease rheology. Tribology international, 176, Article 107926. https://doi.org/10.1016/j.triboint.2022.107926
Osara, J. A. , Lugt, P. M., Bryant, M. D., & Khonsari, M. M. (2022). Thermodynamic Characterization of Grease Oxidation-Thermal Stability via Pressure Differential Scanning Calorimetry. Tribology transactions, 65(3), 542-554. Advance online publication. https://doi.org/10.1080/10402004.2022.2050452
Shetty, P. , Meijer, R. J. , Osara, J. A. , & Lugt, P. M. (2022). Measuring Film Thickness in Starved Grease-Lubricated Ball Bearings: An Improved Electrical Capacitance Method. Tribology transactions, 65(5), 869-879. Advance online publication. https://doi.org/10.1080/10402004.2022.2091067
Osara, J. A., & Bryant, M. D. (2021). Evaluating Degradation Coefficients from Existing System Models. Applied Mechanics, 2(1), 159-173. https://doi.org/10.3390/applmech2010010
Osara, J. A., & Bryant, M. D. (2020). A temperature-only system degradation analysis based on thermal entropy and the degradation-entropy generation methodology. International journal of heat and mass transfer, 158, Article 120051. https://doi.org/10.1016/j.ijheatmasstransfer.2020.120051
Osara, J. A., & Bryant, M. D. (2020). Corrigendum to “Thermodynamics of grease degradation” [Tribol Int 137 (2019) 433–445] (Tribology International (2019) 137 (433–445), (S0301679X19302798), (10.1016/j.triboint.2019.05.020)). Tribology international, 150, Article 106369. https://doi.org/10.1016/j.triboint.2020.106369
Osara, J. A., & Bryant, M. D. (2019). Thermodynamics of Fatigue: Degradation-Entropy Generation Methodology for System and Process Characterization and Failure Analysis. Entropy, 21(7), Article 685. https://doi.org/10.3390/e21070685
Osara, J. A. (2019). Thermodynamics of Manufacturing Processes—The Workpiece and the Machinery. Inventions, 4(2), Article 28. https://doi.org/10.3390/inventions4020028
Osara J.A., Sathwik Chatra K.R. & Lugt P.M. (2023). Grease material properties from first principles thermodynamics. Lubrication Science. https://doi.org/10.1002/ls.1672
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Courses Academic Year 2023/2024
Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.
Courses Academic Year 2022/2023
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