Analysis of the Premature Failure of Wind Turbine Gearbox Bearings PDF Download

Author: Thomas Bruce
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 26

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Wind turbine gearboxes are not always meeting 20-year design life. Premature failure of gearboxes increases cost of energy, turbine downtime, unplanned maintenance, gearbox replacement and rebuild, and increased warranty reserves. The problem is widespread, affects most Original Equipment Manufacturers, and is not caused by manufacturing practices. There is a need to improve gearbox reliability and reduce turbine downtime. The topics of this presentation are: GRC (Gearbox Reliability Collaborative) technical approach; Gearbox failure database; Recorded incidents summary; Top failure modes for bearings; Top failure modes for gears; GRC test gearbox; Bearing nomenclature; Test history; Real damage; Gear sets; Bearings; Observations; and Summary. 5 refs.

Author: Hamza Abdulrasool Hussain Al-Tameemi
Publisher:
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Category :
Languages : en
Pages :

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Author: Abdel Salam Hamdy Makhlouf
Publisher: Butterworth-Heinemann
ISBN: 0081001258
Category : Technology & Engineering
Languages : en
Pages : 479

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Handbook of Materials Failure Analysis: With Case Studies from the Chemicals, Concrete and Power Industries provides an in-depth examination of materials failure in specific situations, a vital component in both developing and engineering new solutions. This handbook covers analysis of materials failure in the chemical, power, and structures arenas, where the failure of a single component can result in devastating consequences and costs. Material defects, mechanical failure as a result of improper design, corrosion, surface fracture, and other failure mechanisms are described in the context of real world case studies involving steam generators, boiler tubes, gas turbine blades, welded structures, chemical conversion reactors and more. This book is an indispensable reference for engineers and scientists studying the mechanisms of failure in these fields. Introduces readers to modern analytical techniques in materials failure analysis Combines foundational knowledge with current research on the latest developments and innovations in the field Includes many compelling case studies of materials failure in chemical processing plants, concrete structures, and power generation systems

Author:
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Languages : en
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The objective of this effort was to investigate and characterize the nature of surface damage and wear to wind turbine gearbox bearings returned from service in the field. Bearings were supplied for examination by S. Butterfield and J. Johnson of the National Wind Technology Center (NREL), Boulder, Colorado. Studies consisted of visual examination, optical and electron microscopy, dimensional measurements of wear-induced macro-scale and micro-scale features, measurements of macro- and micro-scale hardness, 3D imaging of surface damage, studies of elemental distributions on fracture surfaces, and examinations of polished cross-sections of surfaces under various etched and non-etched conditions.

Author: Trevor Letcher
Publisher: Elsevier
ISBN: 0323958303
Category : Technology & Engineering
Languages : en
Pages : 588

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Wind Energy Engineering: A Handbook for Onshore and Offshore Wind Turbines, Second Edition continues to be the most advanced, up-to-date and research-focused text on all aspects of wind energy engineering. Covering a wider spectrum of topics in the field of wind turbines (offshore and onshore), this new edition includes new intelligent turbine designs and optimization, current challenges and efficiencies, remote sensing and smart monitoring, and key areas of advancement, such as floating wind turbines. Each chapter includes a research overview with a detailed analysis and new case studies looking at how recent research developments can be applied. Written by some of the most forward-thinking professionals in the field, and giving a complete examination of one of the most promising and efficient sources of renewable energy, this book is an invaluable reference into this cross-disciplinary field for engineers. Offers an all-around understanding of the links between worldwide resources, including wind turbine technology, electricity and environmental issues, and economics Provide the very latest research and development in over 33 fields of endeavor related to wind power Includes extensive sets of references in each chapter, giving readers all the very latest thinking and information on each topic

Author: Magd Abdel Wahab
Publisher: Springer Nature
ISBN: 9811598932
Category : Science
Languages : en
Pages : 756

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This proceedings gather a selection of peer-reviewed papers presented at the 8th International Conference on Fracture Fatigue and Wear (FFW 2020), held as a virtual conference on 26–27 August 2020. The contributions, prepared by international scientists and engineers, cover the latest advances in and innovative applications of fracture mechanics, fatigue of materials, tribology, and wear of materials. In addition, they discuss industrial applications and cover theoretical and analytical methods, numerical simulations and experimental techniques. The book is intended for academics, including graduate students and researchers, as well as industrial practitioners working in the areas of fracture fatigue and wear.

Author:
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Languages : en
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The combination of premature failure of wind turbine gearboxes and the downtime caused by those failures leads to an increase in the cost of electricity produced by the wind. There is a need for guidance to asset managers regarding how to maximize the longevity of their gearboxes in order to help keep the cost of wind energy as low as possible. A low cost of energy supports the US Department of Energy's goal of achieving 20% of the electricity in the United States produced by wind by the year 2030. DNV KEMA has leveraged our unique position in the industry as an independent third party engineering organization to study the problem of gearbox health management and develop guidance to project operators. This report describes the study. The study was conducted in four tasks. In Task 1, data that may be related to gearbox health and are normally available to wind project operators were collected for analysis. Task 2 took a more in-depth look at a small number of gearboxes to gain insight in to relevant failure modes. Task 3 brought together the previous tasks by evaluating the available data in an effort to identify data that could provide early indications of impending gearbox failure. Last, the observations from the work were collected to develop recommendations regarding gearbox health management.

Author:
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Category :
Languages : en
Pages : 0

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Reliability tracking of wind turbine major systems and components (including blades, pitch, main bearing, gearbox, and generator) is key for future failure rate predictions and operations and maintenance (O&M) optimization. The premature failures of these major systems are one of the primary reasons for a significant increase in O&M costs, turbine downtime, and lost revenue. Wind turbine gearboxes are manufactured by multiple suppliers, resulting in variability and uncertainty in quality and reliability. It is important for operators to know the impact of this variability and unreliability on their O&M costs. To address these industry needs, the Electric Power Research Institute (EPRI) and National Renewable Energy Laboratory (NREL) collaborated with wind turbine operators/utilities on reliability data specifications and standards for an industrywide effective reliability analysis. In this report, gearbox reliability, critical components, and the impact of design and operating conditions are discussed in detail. Also, the report includes details on the digitalization of wind assets enabling implementation of reliability tracking, benchmarking, and O&M budget forecasting techniques.

Author: Reinder Hindrik Vegter
Publisher:
ISBN:
Category : Adiabatic shear band (ASB)
Languages : en
Pages : 23

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Wind turbine gearboxes are subjected to a wide variety of operating conditions, some of which may push the bearings beyond their limits. Damage may be done to the bearings resulting in a specific premature failure mode known as white etching cracks (WECs), sometimes called irregular, or white structured flaking (WSF). In this paper, some influencing factors that can lead to WEC failure will be discussed and related to existing root cause hypotheses. From this work, it is clear that a generalized simple root cause is counterproductive, pinpointing the need to carefully evaluate each WEC case in the light of the corresponding application.