Journal ArticleDOI
Experimental studies of coastdown time
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TLDR
In this article, the coastdown time (CDT) monitoring of power driven rotating systems during every routine stoppage was investigated for prediction of onset of failure, and the CDP plots were made for a variable speed motor with oil, multipurpose grease and Servogem grease lubrication.About:
This article is published in Tribology International.The article was published on 1988-10-01. It has received 7 citations till now.read more
Citations
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Journal ArticleDOI
An Experimental Investigation on the Misalignment Effects in Journal Bearings
TL;DR: In this paper, the experimental performance of misaligned cylindrical and three-lobe journal bearings was evaluated using a double-disc rotor system with a test bearing in the middle and driven by a variable speed DC motor through an electromagnetic coupling.
Journal ArticleDOI
Effects of journal misalignment on the performance characteristics of three-lobe bearings
TL;DR: In this paper, an investigation has been made to evaluate experimentally the performance characteristics of a misaligned 3-lobe journal bearing, and various parameters which have been studied are: friction through coast down time analysis, vibration responses, minimum film thickness, stiffness and damping coefficients of the fluid film, system natural frequency and the damping factor.
Journal ArticleDOI
Thermoelastohydrodynamic Analysis of Tilting Pad Journal Bearing—Theory and Experiments
TL;DR: In this paper, the authors present both theoretical and experimental analysis of a four-pad tilting pad journal bearing, including the simultaneous solution of Reynolds equation, energy equation and deformation equation.
Journal ArticleDOI
Experimental investigation on the performance characteristics of tilting pad journal bearings for small ratios
TL;DR: In this article, an experimental investigation has been carried out on the steady state and dynamic performance characteristics of a tilting pad journal bearing, which has been made using a thermocouple measuring system.
Journal Article
Coast-Down Time Monitoring for Defect Detection in Rotating Equipment
Piyush Gupta,O. P. Gandhi +1 more
TL;DR: In this article, the authors used the coast-down time (CDT) to detect the defects of the shaft assembly and found that the speed decay pattern followed a second order fitting of percentage speed reduction as a function of time.
References
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Journal ArticleDOI
Wear Characteristics of Plain Hydrodynamic Journal Bearings During Repeated Starting and Stopping
TL;DR: In this paper, the onset and development of wear in plain hydrodynamic journal bearings under repeated cycles of starting and stopping has been studied experimentally and it was found that the wear caused easily discernable but localized changes in diametral clearance, surface finish, and roundness of the bearing's bore.
Journal ArticleDOI
An Adiabatic Solution of Misaligned Journal Bearings
Journal ArticleDOI
The Behavior of Plain Hydrodynamic Journal Bearings During Starting and Stopping
TL;DR: In this article, the behavior of plain, hydrodynamic journal bearings during starting and stopping under a steady load was investigated and the starting behavior indicated that a rapid buildup of hydrodynamynamic forces occurred in all cases.
Journal ArticleDOI
Coastdown Time as a Mechanical Condition Indicator for Vertical Axis Motors with Grease-Lubricated Ball Bearings
T. L. Daugherty,R. J. Craig +1 more
TL;DR: In this article, a technique was presented to assess the mechanical condition of vertical axis electric motors equipped with grease-lubricated ball bearings by comparing observed and predicted rotor coastdown times.