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The results of this study would aim to reduce downtime and repair costs for machinery as used in manufacturing environment. The growing emphasis on renewable energy sources like wind, solar and hydroelectric power has resulted in industrial machinery being built in natural ecosystems. To mitigate the possible dangerous environmental effects of these devices, many owners assess and turn to new, better suited lubricants. However, lubricant change periods can surpass years and changing lubricant in large spinning machines is a major undertaking often involving replacement of packings and thorough cleaning as per lube output. With substantial variations in purchasing quality between natural and synthetic lubricants, there must be a good correlation between initial costs and operating benefits. This paper aims at oil film failure with film separation and calculation in journal bearing using ultrasonic technique (NDT), in which the action of specific bearing parameters results in sufficiently understated condition until lube film failure in journal bearing. Bearing life refers to the total number of revolutions (time period) and which working under lubrication film. Lubrication film depends upon many parameters like as; Insufficient lubricants supply; Misalignment loading of bearing on to the shaft; Viscostiy of lubricants; Roughness of surface(Asperities);Temperature; Vibration; Some debries involved in lubricants during working condition from inside the surface and it’s also depend upon lubricant properties. This work is aimed monitoring the lubrication film failure detection using ultrasonic wave reflection.

Lubrication Film Failure Detection in Journal Bearing by Ultrasonic Technique