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Gear Damage Detection Using Oil Debris Analysis
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721283361 Total Pages :30 pages Book Rating :4.2/5 (833 download)
Book Synopsis Gear Damage Detection Using Oil Debris Analysis by : National Aeronautics and Space Administration (NASA)
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
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721514144 Total Pages :36 pages Book Rating :4.5/5 (141 download)
Book Synopsis Integrating Oil Debris and Vibration Gear Damage Detection Technologies Using Fuzzy Logic by : National Aeronautics and Space Administration (NASA)
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
Book Synopsis Gear Damage Detection Using Oil Debris Analysis by :
Download or read book Gear Damage Detection Using Oil Debris Analysis written by and published by . This book was released on 2001 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gear Damage Detection Using Oil Debris Analysis ... Nasa by : United States. National Aeronautics and Space Administration
Download or read book Gear Damage Detection Using Oil Debris Analysis ... Nasa written by United States. National Aeronautics and Space Administration and published by . This book was released on 2003* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Anleitungen für den praktischen Landwirt by :
Download or read book Anleitungen für den praktischen Landwirt written by and published by . This book was released on 1915 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Condition Monitoring and Diagnostic Engineering Management by : A. Starr
Download or read book Condition Monitoring and Diagnostic Engineering Management written by A. Starr and published by Elsevier. This book was released on 2001-09-14 with total page 1021 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Proceedings contains the papers presented at the 14th International Conference on Condition Monitoring and Diagnostic Engineering Management (COMADEM 2001), held in Manchester, UK, on 4-6 September 2001. COMADEM 2001 builds on the excellent reputation of previous conferences in this series, and is essential for anyone working in the field of condition monitoring and maintenance management. The scope of the conference is truly interdisciplinary. The Proceedings contains papers from six continents, written by experts in industry and academia the world over, bringing together the latest thoughts on topics including: Condition-based maintenance Reliability centred maintenance Asset management Industrial case studies Fault detection and diagnosis Prognostics Non-destructive evaluation Integrated diagnostics Vibration Oil and debris analysis Tribology Thermal techniques Risk assessment Structural health monitoring Sensor technology Advanced signal processing Neural networks Multivariate statistics Data compression and fusion This Proceedings also contains a wealth of industrial case studies, and the latest developments in education, training and certification. For more information on COMADEM's aims and scope, please visit http://www.comadem.com
Book Synopsis Gear Crack Detection Using Tooth Analysis by :
Download or read book Gear Crack Detection Using Tooth Analysis written by and published by . This book was released on 2002 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gear cracks are typically difficult to diagnose with sufficient warning time. Significant damage must he present before algorithms detect the damage. A new feature extraction and two new detection techniques are proposed. The time synchronous averaging concept was extended from revolution-based to tooth engagement-based. The detection techniques are based on statistical comparisons among the averages for the individual teeth. These techniques were applied to a series of three seeded fault crack propagation tests. These tests were conducted on aerospace quality spur gears in a test rig. The tests were conducted at speeds ranging from 2500 to 7500 revolutions per minute and torque from 184 to 228 percent of design load. The inability to detect these cracks with high confidence may be caused by the high loading required to initiate the cracks. The results indicate that these techniques do not currently produce an indication of damage that significantly exceeds experimental scatter.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721680252 Total Pages :26 pages Book Rating :4.6/5 (82 download)
Book Synopsis Transmission Bearing Damage Detection Using Decision Fusion Analysis by : National Aeronautics and Space Administration (NASA)
Download or read book Transmission Bearing Damage Detection Using Decision Fusion Analysis written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: A diagnostic tool was developed for detecting fatigue damage to rolling element bearings in an OH-58 main rotor transmission. Two different monitoring technologies, oil debris analysis and vibration, were integrated using data fusion into a health monitoring system for detecting bearing surface fatigue pitting damage. This integrated system showed improved detection and decision-making capabilities as compared to using individual monitoring technologies. This diagnostic tool was evaluated by collecting vibration and oil debris data from tests performed in the NASA Glenn 500 hp Helicopter Transmission Test Stand. Data was collected during experiments performed in this test rig when two unanticipated bearing failures occurred. Results show that combining the vibration and oil debris measurement technologies improves the detection of pitting damage on spiral bevel gears duplex ball bearings and spiral bevel pinion triplex ball bearings in a main rotor transmission. Dempsey, Paula J. and Lewicki, David G. and Decker, Harry J. Glenn Research Center NASA/TM-2004-213382, ARL-TR-3328, E-14890
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781724137654 Total Pages :28 pages Book Rating :4.1/5 (376 download)
Book Synopsis Transmission Bearing Damage Detection Using Decision Fusion Analysis by : National Aeronautics and Space Adm Nasa
Download or read book Transmission Bearing Damage Detection Using Decision Fusion Analysis written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-28 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A diagnostic tool was developed for detecting fatigue damage to rolling element bearings in an OH-58 main rotor transmission. Two different monitoring technologies, oil debris analysis and vibration, were integrated using data fusion into a health monitoring system for detecting bearing surface fatigue pitting damage. This integrated system showed improved detection and decision-making capabilities as compared to using individual monitoring technologies. This diagnostic tool was evaluated by collecting vibration and oil debris data from tests performed in the NASA Glenn 500 hp Helicopter Transmission Test Stand. Data was collected during experiments performed in this test rig when two unanticipated bearing failures occurred. Results show that combining the vibration and oil debris measurement technologies improves the detection of pitting damage on spiral bevel gears duplex ball bearings and spiral bevel pinion triplex ball bearings in a main rotor transmission. Dempsey, Paula J. and Lewicki, David G. and Decker, Harry J. Glenn Research Center NASA/TM-2004-213382, ARL-TR-3328, E-14890...
Book Synopsis Transmission Bearing Damage Detection Using Decision Fusion Analysis by : Paula J. Dempsey
Download or read book Transmission Bearing Damage Detection Using Decision Fusion Analysis written by Paula J. Dempsey and published by BiblioGov. This book was released on 2013-07 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A diagnostic tool was developed for detecting fatigue damage to rolling element bearings in an OH-58 main rotor transmission. Two different monitoring technologies, oil debris analysis and vibration, were integrated using data fusion into a health monitoring system for detecting bearing surface fatigue pitting damage. This integrated system showed improved detection and decision-making capabilities as compared to using individual monitoring technologies. This diagnostic tool was evaluated by collecting vibration and oil debris data from tests performed in the NASA Glenn 500 hp Helicopter Transmission Test Stand. Data was collected during experiments performed in this test rig when two unanticipated bearing failures occurred. Results show that combining the vibration and oil debris measurement technologies improves the detection of pitting damage on spiral bevel gears duplex ball bearings and spiral bevel pinion triplex ball bearings in a main rotor transmission.
Book Synopsis Investigation of Gear and Bearing Fatigue Damage Using Debris Particle Distributions by : Paula J. Dempsey
Download or read book Investigation of Gear and Bearing Fatigue Damage Using Debris Particle Distributions written by Paula J. Dempsey and published by BiblioGov. This book was released on 2013-07 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: A diagnostic tool was developed for detecting fatigue damage to spur gears, spiral bevel gears, and rolling element bearings. This diagnostic tool was developed and evaluated experimentally by collecting oil debris data from fatigue tests performed in the NASA Glenn Spur Gear Fatigue Rig, Spiral Bevel Gear Test Facility, and the 500hp Helicopter Transmission Test Stand. During each test, data from an online, in-line, inductance type oil debris sensor was monitored and recorded for the occurrence of pitting damage. Results indicate oil debris alone cannot discriminate between bearing and gear fatigue damage.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721654062 Total Pages :32 pages Book Rating :4.6/5 (54 download)
Book Synopsis Investigation of Gear and Bearing Fatigue Damage Using Debris Particle Distributions by : National Aeronautics and Space Administration (NASA)
Download or read book Investigation of Gear and Bearing Fatigue Damage Using Debris Particle Distributions written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A diagnostic tool was developed for detecting fatigue damage to spur gears, spiral bevel gears, and rolling element bearings. This diagnostic tool was developed and evaluated experimentally by collecting oil debris data from fatigue tests performed in the NASA Glenn Spur Gear Fatigue Rig, Spiral Bevel Gear Test Facility, and the 500hp Helicopter Transmission Test Stand. During each test, data from an online, in-line, inductance type oil debris sensor was monitored and recorded for the occurrence of pitting damage. Results indicate oil debris alone cannot discriminate between bearing and gear fatigue damage. Dempsey, Paula J. and Lewicki, David G. and Decker, Harry J. Glenn Research Center NASA/TM-2004-212883, ARL-TR-3133, E-14297
Book Synopsis Prognostics and Health Management of Electronics by : Michael G. Pecht
Download or read book Prognostics and Health Management of Electronics written by Michael G. Pecht and published by John Wiley & Sons. This book was released on 2008-09-11 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book on Prognostics and Health Management of Electronics Recently, the field of prognostics for electronic products has received increased attention due to the potential to provide early warning of system failures, forecast maintenance as needed, and reduce life cycle costs. In response to the subject's growing interest among industry, government, and academic professionals, this book provides a road map to the current challenges and opportunities for research and development in Prognostics and Health Management (PHM). The book begins with a review of PHM and the techniques being developed to enable a prognostics approach for electronic products and systems. building on this foundation, the book then presents the state of the art in sensor systems for in-situ health and usage monitoring. Next, it discusses the various models and algorithms that can be utilized in PHM. Finally, it concludes with a discussion of the opportunities in future research. Readers can use the information in this book to: Detect and isolate faults Reduce the occurrence of No Fault Found (NFF) Provide advanced warning of system failures Enable condition-based (predictive) maintenance Obtain knowledge of load history for future design, qualification, and root cause analysis Increase system availability through an extension of maintenance cycles and/or timely repair actions Subtract life cycle costs of equipment from reduction in inspection costs, down time, and inventory Prognostics and Health Management of Electronics is an indispensable reference for electrical engineers in manufacturing, systems maintenance, and management, as well as design engineers in all areas of electronics.
Book Synopsis Soft Computing in Condition Monitoring and Diagnostics of Electrical and Mechanical Systems by : Hasmat Malik
Download or read book Soft Computing in Condition Monitoring and Diagnostics of Electrical and Mechanical Systems written by Hasmat Malik and published by Springer Nature. This book was released on 2020-01-17 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses a range of complex issues associated with condition monitoring (CM), fault diagnosis and detection (FDD) in smart buildings, wide area monitoring (WAM), wind energy conversion systems (WECSs), photovoltaic (PV) systems, structures, electrical systems, mechanical systems, smart grids, etc. The book’s goal is to develop and combine all advanced nonintrusive CMFD approaches on a common platform. To do so, it explores the main components of various systems used for CMFD purposes. The content is divided into three main parts, the first of which provides a brief introduction, before focusing on the state of the art and major research gaps in the area of CMFD. The second part covers the step-by-step implementation of novel soft computing applications in CMFD for electrical and mechanical systems. In the third and final part, the simulation codes for each chapter are included in an extensive appendix to support newcomers to the field.
Download or read book Research & Technology 2001 written by and published by DIANE Publishing. This book was released on with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crack Detection for Aerospace Quality Spur Gears by :
Download or read book Crack Detection for Aerospace Quality Spur Gears written by and published by . This book was released on 2002 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Health and Usage Monitoring System research and development involves analysis of the vibration signals produced by a gearbox throughout its life. There are two major advantages of knowing the actual lifetime of a gearbox component: safety and cost. In this report, a technique is proposed to help extract the critical data and present it in a manner that can be easy to understand. The key feature of the technique is to make it independent of speed, torque and prior history for localized, single tooth damage such as gear cracks. This extraction technique is demonstrated on two sets of digitized vibration data from cracked spur gears. Standard vibration diagnostic parameters are calculated and presented for comparison. Several new detection algorithms are also presented. The results of this study indicate that crack detection methods examined are not robust or repeatable. The proposed techniques provide a limited improvement to existing diagnostic parameters. Current techniques show that the cracks progressed at a much faster rate than anticipated which reduced available time for detection.
Book Synopsis Wear Debris Detection and Oil Analysis Using Ultrasonic and Capacitance Measurements by : Matthew Paul Appleby
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.
