Download or read book Wear Debris Detection and Oil Analysis Using Ultrasonic and Capacitance Measurements written by Matthew Paul Appleby and published by . This book was released on 2010 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Condition monitoring of lubricating oil is a preventive tool that can be used to schedule machine maintenance downtime and predict impending machine failure. Techniques and apparatus for continuous on-line debris detection and oil analysis are become more and more sought after in these modern times. During normal machine operation small wear debris particles of on the order of 1 to 10 microns are generated. When abnormal wear begins, large debris particles in the range of 10 to 150 microns are produced. The particle size and concentration will increase gradually until machine failure. Also, during prolonged or extreme usage conditions various forms of contamination and additive depletion can begin to degrade the physical properties of the lubricant to an unsatisfactory level. Therefore, continuous monitoring of wear debris and critical oil properties is essential to prevent catastrophic system failure of machines. This thesis demonstrates the development of a comprehensive procedure for detecting debris and analyzing physical parameters associated with lubricating oil degradation using ultrasonic and capacitance based measurements. It was found that both ultrasonic and capacitance measurements can detect particles as small as 1.75 mils (44.5 [micrometres]) in diameter. The ultrasonic system detects debris by measuring the decrease in ultrasonic intensity caused by scattering of the wave by the presence of debris in the oil. As lubricating oil is non-conductive, the capacitance based system monitors increases in the effective capacitance of the system brought on by the presence of conductive wear debris. In an effort to expand this technique to include analysis of critical oil properties, ultrasonic and capacitance measurements are done to examine changes in the viscosity and pH of the oil. Comparative viscosity measurements were taken using the ultrasound equipment. A relationship between differences in viscosity and the amplitude and transit time of an ultrasonic wave were developed. The data shows that increases in oil viscosity lead to increased acoustic velocity and attenuation. To analyze acid content levels in contaminated oil, the capacitance measurement system has been utilized to show the correlation between increases in lubricating oil's pH level and the increase in the capacitance of the system.
Download or read book Oil Debris Detection Using Capacitance and Ultrasonic Measurements written by Maitreyee Amruta Sarangi and published by . This book was released on 2007 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predictive maintenance has gained wide acceptance as a cost cutting strategy in modern industry. Condition monitoring by lubricant analysis is one of the basic tools of a predictive maintenance program along with vibration monitoring, performance monitoring and thermography. Abnormal wear of the moving parts of machines can be avoided by detecting the presence of debris, in the lubricant oil, when they are in the microns size range. The objective of this project is to detect debris in SAE-30 motor oil using two different methods, namely, the Ultrasonic measurement and the Capacitance measurement methods. In the ultrasonic measurement method, the debris is detected as a measure of change in the energy of ultrasonic waves due to scattering by oil debris, in terms of voltage. And in the second or capacitance measurement method the debris is detected as a measure of change in the maximum reflection at resonant frequency of a series LC circuit due to presence of conducting debris, capacitor (C) having oil as dielectric. From the experimental results it was found that both the methods can detect the oil debris successfully and it was concluded that Capacitance method is better for detection of particles having lower range of size and Ultrasound method is better in the higher range.
Download or read book Integrating Oil Debris and Vibration Gear Damage Detection Technologies Using Fuzzy Logic written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-19 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A diagnostic tool for detecting damage to spur gears was developed. Two different measurement technologies, wear debris analysis and vibration, were integrated into a health monitoring system for detecting surface fatigue pitting damage on gears. This integrated system showed improved detection and decision-making capabilities as compared to using individual measurement technologies. This diagnostic tool was developed and evaluated experimentally by collecting vibration and oil debris data from fatigue tests performed in the NASA Glenn Spur Gear Fatigue Test Rig. Experimental data were collected during experiments performed in this test rig with and without pitting. Results show combining the two measurement technologies improves the detection of pitting damage on spur gears. Dempsey, Paula J. and Afjeh, Abdollah A. Glenn Research Center NASA/TM-2002-211126, NAS 1.15:211126, E-12976
Download or read book On line Condition Monitoring in Industrial Lubrication and Tribology written by Nikolai K. Myshkin and published by Springer. This book was released on 2017-07-24 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers readers a concise yet comprehensive introduction to a set of diagnostic methods for on-line condition monitoring of lubricated tribosystems used in industry. It covers the latest trends in on-line tribodiagnostics, an important and rapidly developing area of tribology. The book also reports on new tools as they have been developed and applied by the authors. A special emphasis is given to the physical fundamentals of opto-magnetic detectors, ferro-analyzers and analyzers of metal particles in lubricated tribosystems, as well as fluorescence methods for real-time oil monitoring in compressors, hydraulic systems and electrical transformers. Further, the book discusses other important issues such as the monitoring of water content in oil, and presents techniques for measuring soot content in oil in diesel engine oils. Lastly, it describes the modular intelligent (SMART) diagnostic system for vehicles. Mainly intended for researchers, industrial and automotive engineers developing cost-effective techniques and sensors for the on-line monitoring of lubricating oil, the book also offers a valuable source of information for students and project managers in the manufacturing, energy, oil and gas, and automotive industry.
Download or read book The Wear Debris Analysis Handbook written by Brian J. Roylance and published by . This book was released on 1999 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ideal - and affordable - text for engineers and maintenance professionals with an interest in vibration monitoring. This title does not attempt to baffle with the technology, but introduces it at an understandable level, touching on the basic theory and concepts, available equipment and practical issues relevant to the engineer as well as highlighting several case studies with which the reader can relate. Other books in this series focus on corrosion, vibration, thermography, noise, ultrasonics and acoustic emission, level, leakage and flow, oil analysis, load monitoring and a superb Concise Encyclopaedia that includes introductory notes on all of the above techiques as well as others.
Download or read book Gear Damage Detection Using Oil Debris Analysis written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-19 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this paper was to verify, when using an oil debris sensor, that accumulated mass predicts gear pitting damage and to identify a method to set threshold limits for damaged gears. Oil debris data was collected from 8 experiments with no damage and 8 with pitting damage in the NASA Glenn Spur Gear Fatigue Rig. Oil debris feature analysis was performed on this data. Video images of damage progression were also collected from 6 of the experiments with pitting damage. During each test, data from an oil debris sensor was monitored and recorded for the occurrence of pitting damage. The data measured from the oil debris sensor during experiments with damage and with no damage was used to identify membership functions to build a simple fuzzy logic model. Using fuzzy logic techniques and the oil debris data, threshold limits were defined that discriminate between stages of pitting wear. Results indicate accumulated mass combined with fuzzy logic analysis techniques is a good predictor of pitting damage on spur gears. Dempsey, Paula J. Glenn Research Center NASA/TM-2001-210936, E-12789, NAS 1.15:210936
Download or read book Reliability Analysis and Asset Management of Engineering Systems written by Gilberto Francisco Martha de Souza and published by Elsevier. This book was released on 2021-09-24 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reliability Analysis and Asset Management of Engineering Systems explains methods that can be used to evaluate reliability and availability of complex systems, including simulation-based methods. The increasing digitization of mechanical processes driven by Industry 4.0 increases the interaction between machines and monitoring and control systems, leading to increases in system complexity. For those systems the reliability and availability analyses are increasingly challenging, as the interaction between machines has become more complex, and the analysis of the flexibility of the production systems to respond to machinery failure may require advanced simulation techniques. This book fills a gap on how to deal with such complex systems by linking the concepts of systems reliability and asset management, and then making these solutions more accessible to industry by explaining the availability analysis of complex systems based on simulation methods that emphasise Petri nets. Explains how to use a monitoring database to perform important tasks including an update of complex systems reliability Shows how to diagnose probable machinery-based causes of system performance degradation by using a monitoring database and reliability estimates in an integrated way Describes practical techniques for the application of AI and machine learning methods to fault detection and diagnosis problems
Download or read book Journal of Tribology written by and published by . This book was released on 2006 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insight written by and published by . This book was released on 1995 with total page 1374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MEMS NEMS Sensors written by Goutam Koley and published by MDPI. This book was released on 2019-11-20 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the ever-expanding applications of micro/nano-electromechanical systems (NEMS/MEMS) as sensors and actuators, interest in their development has rapidly expanded over the past decade. Encompassing various excitation and readout schemes, the MEMS/NEMS devices transduce physical parameter changes, such as temperature, mass or stress, caused by changes in desired measurands, to electrical signals that can be further processed. Some common examples of NEMS/MEMS sensors include pressure sensors, accelerometers, magnetic field sensors, microphones, radiation sensors, and particulate matter sensors.
Download or read book Metals Abstracts written by and published by . This book was released on 1984 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wear Particles From the Cradle to the Grave written by D. Dowson and published by Elsevier. This book was released on 1992-08-04 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Leeds-Lyon symposia have well established themselves in the tribological calendar. Industrial progress requires a better understanding of interfacial phenomena than now exists and it is exciting to see that the topics addressed in these proceedings volumes are at the forefront of progress in tribological research. These proceedings contain 61 papers written by authors from all over the world, covering the entire spectrum of wear particles. Of particular interest is the detailed consideration of a wide range of particle formations and detachments, as well as a close look at the physics and chemistry of the wear of mechanisms, together with other in-depth state-of-the-art analytical contributions.
Download or read book Understanding Ultrasonic Level Measurement written by Stephen Milligan and published by Momentum Press. This book was released on 2013-01-19 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrasonics is a reliable and proven technology for level measurement. It has been used for decades in many diverse industries such as water treatment, mining, aggregates, cement, and plastics. Ultrasonics provides superior inventory accuracy, process control, and user safety. Understanding Ultrasonic Level Measurement is a comprehensive resource in which you will learn about the history of ultrasonics and discover insights about its systems, installation and applications. This book is designed with many user-friendly features and vital resources including: • Real-life application stories • Diagrams and recommendations that aid both the novice and advanced user in the selection and application of an ultrasonic level measurement system • Glossary of terminology
Download or read book An Introduction to Predictive Maintenance written by R. Keith Mobley and published by Elsevier. This book was released on 2002-10-24 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of An Introduction to Predictive Maintenance helps plant, process, maintenance and reliability managers and engineers to develop and implement a comprehensive maintenance management program, providing proven strategies for regularly monitoring critical process equipment and systems, predicting machine failures, and scheduling maintenance accordingly. Since the publication of the first edition in 1990, there have been many changes in both technology and methodology, including financial implications, the role of a maintenance organization, predictive maintenance techniques, various analyses, and maintenance of the program itself. This revision includes a complete update of the applicable chapters from the first edition as well as six additional chapters outlining the most recent information available. Having already been implemented and maintained successfully in hundreds of manufacturing and process plants worldwide, the practices detailed in this second edition of An Introduction to Predictive Maintenance will save plants and corporations, as well as U.S. industry as a whole, billions of dollars by minimizing unexpected equipment failures and its resultant high maintenance cost while increasing productivity. A comprehensive introduction to a system of monitoring critical industrial equipment Optimize the availability of process machinery and greatly reduce the cost of maintenance Provides the means to improve product quality, productivity and profitability of manufacturing and production plants
Download or read book Condition Monitoring and Control for Intelligent Manufacturing written by Lihui Wang and published by Springer Science & Business Media. This book was released on 2006-08-02 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Condition modelling and control is a technique used to enable decision-making in manufacturing processes of interest to researchers and practising engineering. Condition Monitoring and Control for Intelligent Manufacturing will be bought by researchers and graduate students in manufacturing and control and engineering, as well as practising engineers in industries such as automotive and packaging manufacturing.
Download or read book Modelling Monitoring and Diagnostic Techniques for Fluid Power Systems written by John Watton and published by Springer Science & Business Media. This book was released on 2007-03-24 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the background theory of fluid power and indicates the range of concepts needed for a modern approach to condition monitoring and fault diagnosis. The theory is leavened by 15-years-worth of practical measurements by the author, working with major fluid power companies, and real industrial case studies. Heavily supported with examples drawn from real industrial plants – the methods in this book have been shown to work.
Download or read book Physics Briefs written by and published by . This book was released on 1986 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
