Download or read book An Investigation Into Temperature Trending in Railroad Tapered Roller Bearings Through Vibration Monitoring Techniques written by Rafael Kristian Maldonado and published by . This book was released on 2011 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation Into Railroad Tapered Roller Bearing Temperature Trending Using Finite Element Analysis written by Juan Martin Cardenas and published by . This book was released on 2008 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Defect Detection in Railroad Tapered roller Bearings Using Vibration Analysis Techniques written by Iris L. Alvarado and published by . This book was released on 2012 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vibration Engineering and Technology of Machinery written by Jyoti K. Sinha and published by Springer. This book was released on 2014-08-14 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The VETOMAC-X Conference covered a holistic plethora of relevant topics in vibration and engineering technology including condition monitoring, machinery and structural dynamics, rotor dynamics, experimental techniques, finite element model updating, industrial case studies, vibration control and energy harvesting, and signal processing. These proceedings contain not only all of the nearly one-hundred peer-reviewed presentations from authors representing more than twenty countries, but also include six invited lectures from renowned experts: Professor K. Gupta, Mr W. Hahn, Professor A.W. Lees, Professor John Mottershead, Professor J.S. Rao, and Dr P. Russhard. This work is of interest to researchers and practitioners alike, and is an essential book for most of libraries of higher academic institutes.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring and Predicting Bearing Faults Through Temperature Ultrasonic and Vibration Data written by John Haver and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bearings exist abundantly throughout many different industries, and they are an important part of how many vehicles, manufacturing machinery, and household appliances function. The failure of a single bearing can be critical to the successful operation of important machinery and can have catastrophic consequences due to the widespread nature of bearings in industry. However, by determining how to continuously assess the health of a bearing on a machine, there is great potential to increase the efficiency and service life of bearings. This thesis involves the study of lubrication-related faults, which is one of the most prevalent problems with ball bearings that lead to failure. The experiment involves the collection and analysis of temperature, ultrasonic, and vibration data for the testing of ball bearings under various grease conditions, including no grease, undergreased, normally greased, and overgreased. The aim of this experiment is to study the relationships between the sources of test data and the grease condition of a bearing, with aims of developing a model that can identify and predict lubrication-related faults.
Download or read book Thermography Assisted Bearing Condition Monitoring written by Wael Moussa and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Despite the large amount of research work in condition based maintenance and condition monitoring methods, there is still a need for more reliable and accurate methods. The clear evidence of that need is the continued dependence on time based maintenance, especially for critical applications such as turbomachinery and airplane engines. The lack of accurate condition monitoring systems could lead to not only the unexpected failures as well as the resulting hazards and repair costs, but also a huge waste of material and time because of unnecessary replacement due to false alarms and unnecessary repair and maintenance. Temperature change is a phenomenon that accompanies every dynamic activity in the universe. However, it has not been adequately exploited for mechanical system condition monitoring. The reason is the slow response of current temperature monitoring systems compared to other condition monitoring methods such as vibration analysis. Many references inferred that the change in temperature is not sensible until approaching the end of the monitored component life and even the whole system life (Kurfess, et al., 2006; Randall, 2011; Patrick, et al., March 7-14, 2009). On the other hand, the most commonly used condition monitoring method, i.e., vibration analysis, is not free from pitfalls. Although vibration analysis has shown success in detecting some bearing faults, for other faults like lubrication problems and gradual wear it is much less effective. Also, it does not give a reliable indication of fault severity for many types of bearing faults. The advancement of thermography as a temperature monitoring tool encourages the reconsideration of temperature monitoring for mechanical system fault detection. In addition to the improved accuracy and responsiveness, it has the advantage of non-contact monitoring which eliminates the need for complex sensor mounting and wiring especially for rotating components. Therefore, in current studies the thermography-based monitoring method is often used either as a distinct method or as a complementary tool to vibration analysis in an integrated condition monitoring system. The main objectives of this study are hence to: 1. Define heat sources in the rolling element bearings and overview two of the most famous bearing temperature calculation methods. 2. Setup a bearing test rig that is equipped with both vibration and temperature monitoring systems. 3. Develop a temperature calculation analytical model for rolling element bearing that include both friction calculation and heat transfer models. The friction calculated by the model will be compared to that calculated using the pre-defined empirical methods. The heat transfer model is used for bearing temperature calculation that will be compared to the experimental measurement using different temperature monitoring devices. 4. Propose a new in-band signal enhancement technique, based on the synchronous averaging technique, Autonomous Time Synchronous Averaging (ATSA) that does not need an angular position measuring device. The proposed method, in addition to the Spectral Kurtosis based band selection, will be used to enhance the bearing envelope analysis. 5. Propose a new method for classification of the bearing faults based on the fault severity and the strength of impulsiveness in vibration signals. It will be used for planning different types of tests using both temperature and vibration methods. 6. Develop and experimentally test a new technique to stimulate the bearing temperature transient condition. The technique is supported by the results of finite element modeling and is used for bearing temperature condition monitoring when the bearing is already running at thermal equilibrium condition.
Download or read book Condition Monitoring of Rolling Element Bearings written by A. F. Khan and published by . This book was released on 1991 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the individual capabilities of various vibration-based condition monitoring techniques in an attempt to use them in parallel to develop a reliable and cost effective system for rolling element bearings. This includes detection of damage, diagnosis of its location, and monitoring its failure trend enabling a prognosis of the remaining bearing life. This also requires the choice of appropriate monitoring intervals during the failure trend monitoring. A new technique, ratio analysis, which monitors the ratio of the levels in the above mentioned two frequency bands, is used effectively in defining the monitoring intervals. It is shown that total life span of a bearing can be divided into three stages, namely: pre-damage, post- damage and pre-failure, and the monitoring intervals can be set accordingly using the LB subscript ten figure and the characteristic of the ratio curve.
Download or read book Thermal Analysis of Railroad Tapered Roller Bearings written by Fadi M. Alnaimat and published by . This book was released on 2007 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance of Large Bore Tapered Roller Bearings Under Combined Radial and Thrust Load at Shaft Speeds to 15 000 RPM written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-20 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of 120.65-mm bore tapered roller bearings was investigated at shaft speeds up to 15,000 rpm. Temperature distribution and bearing heat generation were determined as a function of shaft speed, radial and thrust loads, lubricant flow rate, and lubricant inlet temperature. Lubricant was supplied by either jets or by a combination of holes through the cone directly to the cone-rib contact and jets at the roller small-end side. Cone-rib lubrication significantly improved high-speed tapered-roller bearing performance, yielding lower cone-face temperatures and lower power loss and allowing lower lubricant flow rates for a given speed condition. Bearing temperatures increased with increased shaft speed and decreased with increased lubricant flow rate. Bearing power loss increased with increased shaft speed and increased lubricant flow rate. Parker, R. J. and Signer, H. R. Glenn Research Center NASA-TN-D-8404, E-8825 RTOP 505-04
Download or read book Implementation of Wireless Temperature Sensors for Continuous Condition Monitoring of Railroad Bearings written by Andoni Zagouris II. and published by . This book was released on 2012 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Temperature Rise of Double row Tapered Roller Bearings Analyzed with the Thermal Network Method written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Event Monitoring Across Tapered Roller Bearings written by James R. Bilodeau and published by . This book was released on 1996 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Railroad Car Roller Bearing Temperature Measurement and Analysis written by Thomas V. Peacock and published by . This book was released on 1980 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings Institution of Mechanical Engineers written by Institution of Mechanical Engineers (Great Britain) and published by . This book was released on 1973 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes supplements.
Download or read book The Journal of the Engineering Institute of Canada written by Engineering Institute of Canada and published by . This book was released on 1924 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Investigation and Practical Application of Vibration Theories to Detect Cup Nicks on Tapered Roller Bearings written by Marle Fernandes and published by . This book was released on 2013 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
