Gear Damage Detection Using Oil Debris Analysis

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721283361
Total Pages : 30 pages
Book Rating : 4.2/5 (833 download)

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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

Gear Damage Detection Using Oil Debris Analysis

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Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)

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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:

Prognostics and Health Management of Electronics

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Publisher : John Wiley & Sons
ISBN 13 : 0470385839
Total Pages : 335 pages
Book Rating : 4.4/5 (73 download)

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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.

Gear Crack Detection Using Tooth Analysis

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Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)

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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.

Research & Technology 2001

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Publisher : DIANE Publishing
ISBN 13 : 1428918213
Total Pages : 251 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Research & Technology 2001 by :

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:

Crack Detection for Aerospace Quality Spur Gears

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Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)

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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.

Condition Monitoring and Diagnostic Engineering Management

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Publisher : Elsevier
ISBN 13 : 0080550789
Total Pages : 1021 pages
Book Rating : 4.0/5 (85 download)

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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

NASA Tech Briefs

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Publisher :
ISBN 13 :
Total Pages : 1286 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis NASA Tech Briefs by :

Download or read book NASA Tech Briefs written by and published by . This book was released on 2006 with total page 1286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research & Technology 2002

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Publisher : DIANE Publishing
ISBN 13 : 1428918205
Total Pages : 274 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Research & Technology 2002 by :

Download or read book Research & Technology 2002 written by and published by DIANE Publishing. This book was released on with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Integrating Oil Debris and Vibration Gear Damage Detection Technologies Using Fuzzy Logic

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721514144
Total Pages : 36 pages
Book Rating : 4.5/5 (141 download)

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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

NASA Technical Memorandum

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Publisher :
ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis NASA Technical Memorandum by :

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Monthly Catalog of United States Government Publications

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Publisher :
ISBN 13 :
Total Pages : 716 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Monthly Catalog of United States Government Publications by :

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1990 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

System Health Management

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Publisher : John Wiley & Sons
ISBN 13 : 1119998735
Total Pages : 659 pages
Book Rating : 4.1/5 (199 download)

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Book Synopsis System Health Management by : Stephen B. Johnson

Download or read book System Health Management written by Stephen B. Johnson and published by John Wiley & Sons. This book was released on 2011-06-01 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: System Health Management: with Aerospace Applications provides the first complete reference text for System Health Management (SHM), the set of technologies and processes used to improve system dependability. Edited by a team of engineers and consultants with SHM design, development, and research experience from NASA, industry, and academia, each heading up sections in their own areas of expertise and co-coordinating contributions from leading experts, the book collates together in one text the state-of-the-art in SHM research, technology, and applications. It has been written primarily as a reference text for practitioners, for those in related disciplines, and for graduate students in aerospace or systems engineering. There are many technologies involved in SHM and no single person can be an expert in all aspects of the discipline.System Health Management: with Aerospace Applications provides an introduction to the major technologies, issues, and references in these disparate but related SHM areas. Since SHM has evolved most rapidly in aerospace, the various applications described in this book are taken primarily from the aerospace industry. However, the theories, techniques, and technologies discussed are applicable to many engineering disciplines and application areas. Readers will find sections on the basic theories and concepts of SHM, how it is applied in the system life cycle (architecture, design, verification and validation, etc.), the most important methods used (reliability, quality assurance, diagnostics, prognostics, etc.), and how SHM is applied in operations (commercial aircraft, launch operations, logistics, etc.), to subsystems (electrical power, structures, flight controls, etc.) and to system applications (robotic spacecraft, tactical missiles, rotorcraft, etc.).

Structural Health Monitoring Using Genetic Fuzzy Systems

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Publisher : Springer Science & Business Media
ISBN 13 : 0857299077
Total Pages : 135 pages
Book Rating : 4.8/5 (572 download)

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Book Synopsis Structural Health Monitoring Using Genetic Fuzzy Systems by : Prashant M. Pawar

Download or read book Structural Health Monitoring Using Genetic Fuzzy Systems written by Prashant M. Pawar and published by Springer Science & Business Media. This book was released on 2011-07-09 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural health monitoring (SHM) has emerged as a prominent research area in recent years owing to increasing concerns about structural safety, and the need to monitor and extend the lives of existing structures. Structural Health Monitoring Using Genetic Fuzzy Systems elaborates the process of intelligent SHM development and implementation using the evolutionary system. The use of a genetic algorithm automates the development of the fuzzy system, and makes the method easy to use for problems involving a large number of measurements, damage locations and sizes; such problems being typical of SHM. The ideas behind fuzzy logic, genetic algorithms and genetic fuzzy systems are also explained. The functionality of the genetic fuzzy system architecture is elucidated within a case-study framework, covering: • SHM of beams; • SHM of composite tubes; and • SHM of helicopter rotor blades. Structural Health Monitoring Using Genetic Fuzzy Systems will be useful for aerospace, civil and mechanical engineers working with structures and structured components. It will also be useful for computer scientists and applied mathematicians interested in the application of genetic fuzzy systems to engineering problems.

Diagnostics and Prognostics of Engineering Systems: Methods and Techniques

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Publisher : IGI Global
ISBN 13 : 146662096X
Total Pages : 461 pages
Book Rating : 4.4/5 (666 download)

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Book Synopsis Diagnostics and Prognostics of Engineering Systems: Methods and Techniques by : Kadry, Seifedine

Download or read book Diagnostics and Prognostics of Engineering Systems: Methods and Techniques written by Kadry, Seifedine and published by IGI Global. This book was released on 2012-09-30 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial Prognostics predicts an industrial system’s lifespan using probability measurements to determine the way a machine operates. Prognostics are essential in determining being able to predict and stop failures before they occur. Therefore the development of dependable prognostic procedures for engineering systems is important to increase the system’s performance and reliability. Diagnostics and Prognostics of Engineering Systems: Methods and Techniques provides widespread coverage and discussions on the methods and techniques of diagnosis and prognosis systems. Including practical examples to display the method’s effectiveness in real-world applications as well as the latest trends and research, this reference source aims to introduce fundamental theory and practice for system diagnosis and prognosis.

Research and Technology 2002

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Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Research and Technology 2002 by :

Download or read book Research and Technology 2002 written by and published by . This book was released on 2003 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research and Technology 2001

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Publisher :
ISBN 13 :
Total Pages : 250 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Research and Technology 2001 by :

Download or read book Research and Technology 2001 written by and published by . This book was released on 2002 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: