Abstract
A multi-purpose Universal Journal Bearing Test Rig (UJBTR) was designed and constructed for covering this research area. Design and construction of a control system for UJBTR has been introduced. It is a fully controlled system that helps obtain all the essential tribological values based on the conducted measurements and test trials. Further, it helps to verify the accurateness of the obtained values and outcomes. It consists of three control panels which ensure full control, monitoring and supervision of UJBTR via the Supervisory Control and Data Acquisition (SCADA) system. Utilizing UJBTR, it was possible to carry out different test trials for investigating the most critical operational factors affecting the performance of the lubricating oil film within journal bearings. Those factors involve the viscosity oil grade, the journal shaft speed and the applied load. Numerous test trials at different speeds and constant applied load were conducted to investigate the oil film pressure and temperature distribution within Circumferential Grooved Bearing (CGB). The accurate results obtained from the test trials assured the reliability of UJBTR control system and its ability to contain more extensive investigations and studies into the field of hydrodynamic lubrication within journal bearing.
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