Performance analysis of journal bearings using ultrasonic reflection

Kasolang, S. and Ahmed, Diyar I. and Dwyer-Joyce, R. S. and Yousif, B. F. (2013) Performance analysis of journal bearings using ultrasonic reflection. Tribology International, 64. pp. 78-84. ISSN 0301-679X


One method that shows potential for non-invasive oil film measurement is the use of ultrasonic reflection. In the current work, ultrasonic transducer is coupled to the outside of a bearing and a wave transmitted through the bearing shell. The wave is partially reflected when it strikes an oil film. Experiments were conducted to study ultrasonic reflection coefficient technique in plain journal bearing. Measurements of multiple reflection coefficients were recorded and used to map the viscosity profiles, oil-film thickness and bearing cavitation. In addition, an alternative method using the reflection coefficient phase from film thickness measurement was used for verification. The results revealed that the evaluation of phase method is slightly lower compared to that of the amplitude method. The film thickness profile obtained in the converging region agreed well with classical hydrodynamic predictions.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Elsevier Ltd. Published version deposited in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 17 Mar 2014 12:23
Last Modified: 16 Jul 2014 01:30
Uncontrolled Keywords: journal bearing; ultrasound; viscosity profile; oil-film thickness
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091309 Tribology
09 Engineering > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8614 Machinery and Equipment > 861403 Industrial Machinery and Equipment
Identification Number or DOI: 10.1016/j.triboint.2013.02.012

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