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This paper establishes mathematical model of radial lip seals and flow factors method are used to show the influence of aging in oil and wear on such features as pumping rate, friction torque. The root mean square (RMS) roughness is a vital parameter to predict the sealing performance in the model of lip seals. And the RMS of the elastomeric material is intensely influenced by the time of aging in...
Journal misalignment often exists in grease lubricated journal bearings. Lubricating grease is a non-Newtonian liquid, and the rheological properties of grease make it difficult to analyze the lubrication performance numerically. In this paper, grease lubrication Reynolds equation is introduced based on the Herschel-Bulkley model which accurately describes the rheological properties of grease. The...
With its unique and perfect performance, Nano-TiO2 film has been widely used in many fields. However, the preparation of Nano-TiO2 film has significant sustainability issues including heavy use of energy and materials, low production efficiency, toxic chemical emissions, etc. In this research, case study is conducted on a Low Pressure Chemical Vapor Deposition (LPCVD) process for nano-TiO2 film preparation...
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