Dual-Axis Resonance Testing of Wind Turbine Blades

Download Dual-Axis Resonance Testing of Wind Turbine Blades PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)

DOWNLOAD NOW!


Book Synopsis Dual-Axis Resonance Testing of Wind Turbine Blades by :

Download or read book Dual-Axis Resonance Testing of Wind Turbine Blades written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An apparatus (100) for fatigue testing test articles (104) including wind turbine blades. The apparatus (100) includes a test stand (110) that rigidly supports an end (106) of the test article (104). An actuator assembly (120) is attached to the test article (104) and is adapted for substantially concurrently imparting first and second forcing functions in first and second directions on the testarticle (104), with the first and second directions being perpendicular to a longitudinal axis. A controller (130) transmits first and second sets of displacement signals (160, 164) to the actuator assembly (120) at two resonant frequencies of the test system (104). The displacement signals (160, 164) initiate the actuator assembly (120) to impart the forcing loads to concurrently oscillate thetest article (104) in the first and second directions. With turbine blades, the blades (104) are resonant tested concurrently for fatigue in the flapwise and edgewise directions.

Dual-axis Resonance Testing of Wind Turbine Blades

Download Dual-axis Resonance Testing of Wind Turbine Blades PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (946 download)

DOWNLOAD NOW!


Book Synopsis Dual-axis Resonance Testing of Wind Turbine Blades by :

Download or read book Dual-axis Resonance Testing of Wind Turbine Blades written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An apparatus (100) for fatigue testing test articles (104) including wind turbine blades. The apparatus (100) includes a test stand (110) that rigidly supports an end (106) of the test article (104). An actuator assembly (120) is attached to the test article (104) and is adapted for substantially concurrently imparting first and second forcing functions in first and second directions on the test article (104), with the first and second directions being perpendicular to a longitudinal axis. A controller (130) transmits first and second sets of displacement signals (160, 164) to the actuator assembly (120) at two resonant frequencies of the test system (104). The displacement signals (160, 164) initiate the actuator assembly (120) to impart the forcing loads to concurrently oscillate the test article (104) in the first and second directions. With turbine blades, the blades (104) are resonant tested concurrently for fatigue in the flapwise and edgewise directions.

New Method for Dual-Axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading - Scholar's Choice Edition

Download New Method for Dual-Axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading - Scholar's Choice Edition PDF Online Free

Author :
Publisher : Scholar's Choice
ISBN 13 : 9781297044090
Total Pages : 198 pages
Book Rating : 4.0/5 (44 download)

DOWNLOAD NOW!


Book Synopsis New Method for Dual-Axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading - Scholar's Choice Edition by : National Renewable Energy Laboratory (Nr

Download or read book New Method for Dual-Axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading - Scholar's Choice Edition written by National Renewable Energy Laboratory (Nr and published by Scholar's Choice. This book was released on 2015-02-16 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

New Method for Dual-axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading

Download New Method for Dual-axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 185 pages
Book Rating : 4.:/5 (551 download)

DOWNLOAD NOW!


Book Synopsis New Method for Dual-axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading by : Darris L. White

Download or read book New Method for Dual-axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading written by Darris L. White and published by . This book was released on 2003 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A New Method for Dual-axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading

Download A New Method for Dual-axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (551 download)

DOWNLOAD NOW!


Book Synopsis A New Method for Dual-axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading by : Darris L. White

Download or read book A New Method for Dual-axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading written by Darris L. White and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proof of Concept Test for Dual-axis Resonant Phase-Locked Excitation (PhLEX) Fatigue Testing Method for Wind Turbine Blades

Download Proof of Concept Test for Dual-axis Resonant Phase-Locked Excitation (PhLEX) Fatigue Testing Method for Wind Turbine Blades PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (99 download)

DOWNLOAD NOW!


Book Synopsis Proof of Concept Test for Dual-axis Resonant Phase-Locked Excitation (PhLEX) Fatigue Testing Method for Wind Turbine Blades by : Jenna Austin Beckwith

Download or read book Proof of Concept Test for Dual-axis Resonant Phase-Locked Excitation (PhLEX) Fatigue Testing Method for Wind Turbine Blades written by Jenna Austin Beckwith and published by . This book was released on 2014 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The PhLEX proof-of-concept test set-up and the results and conclusions of the proof-of-concept test are presented in this thesis.

Advances in wind turbine blade design and materials

Download Advances in wind turbine blade design and materials PDF Online Free

Author :
Publisher : Elsevier Inc. Chapters
ISBN 13 : 0128089172
Total Pages : 43 pages
Book Rating : 4.1/5 (28 download)

DOWNLOAD NOW!


Book Synopsis Advances in wind turbine blade design and materials by : R.P.L. Nijssen

Download or read book Advances in wind turbine blade design and materials written by R.P.L. Nijssen and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composites have been the material of choice for wind turbine blade construction for several decades. This chapter explains why. It also shows how wind turbine blade materials and our understanding of their fatigue behaviour have developed recently, and the gaps that still exist in the knowledge. The chapter discusses why fatigue is a predominant design driver for wind turbine blades. The main structural elements of the blade (load bearing components and aerodynamic shell) are considered in terms of material and design requirements, and fundamental research questions are addressed. Finally, there is a comment on current and future trends, as well as a list of recommended reading.

Advances in Wind Turbine Blade Design and Materials

Download Advances in Wind Turbine Blade Design and Materials PDF Online Free

Author :
Publisher : Woodhead Publishing
ISBN 13 : 0081030088
Total Pages : 516 pages
Book Rating : 4.0/5 (81 download)

DOWNLOAD NOW!


Book Synopsis Advances in Wind Turbine Blade Design and Materials by : Povl Brondsted

Download or read book Advances in Wind Turbine Blade Design and Materials written by Povl Brondsted and published by Woodhead Publishing. This book was released on 2023-01-14 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Wind Turbine Blade Design and Materials, Second Edition, builds on the thorough review of the design and functionality of wind turbine rotor blades and the requirements and challenges for composite materials used in both current and future designs of wind turbine blades. Reviews the design and functionality of wind turbine rotor blades Examines the requirements and challenges for composite materials used in both current and future designs of wind turbine blades Provides an invaluable reference for researchers and innovators in the field of wind

Evaluation of the New B-REX Fatigue Testing System for Multi-Megawatt Wind Turbine Blades

Download Evaluation of the New B-REX Fatigue Testing System for Multi-Megawatt Wind Turbine Blades PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (873 download)

DOWNLOAD NOW!


Book Synopsis Evaluation of the New B-REX Fatigue Testing System for Multi-Megawatt Wind Turbine Blades by :

Download or read book Evaluation of the New B-REX Fatigue Testing System for Multi-Megawatt Wind Turbine Blades written by and published by . This book was released on 2004 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Renewable Energy Laboratory (NREL) recently developed a new hybrid fatigue testing system called the Blade Resonance Excitation (B-REX) test system. The new system uses 65% less energy to test large wind turbine blades in half the time of NREL's dual-axis forced-displacement test method with lower equipment and operating costs. The B-REX is a dual-axis test system that combines resonance excitation with forced hydraulic loading to reduce the total test time required while representing the operating strains on the critical inboard blade stations more accurately than a single-axis test system. The analysis and testing required to fully implement the B-REX was significant. To control unanticipated blade motion and vibrations caused by dynamic coupling between the flap, lead-lag, and torsional directions, we needed to incorporate additional test hardware and control software. We evaluated the B-REX test system under stable operating conditions using a combination of various sensors. We then compared our results with results from the same blade, tested previously using NREL's dual-axis forced-displacement test method. Experimental results indicate that strain levels produced by the B-REX system accurately replicated the forced-displacement method. This paper describes the challenges we encountered while developing the new blade fatigue test system and the experimental results that validate its accuracy.

Evaluation of the New B-REX Fatigue Testing System for Multi-megawatt Wind Turbine Blades

Download Evaluation of the New B-REX Fatigue Testing System for Multi-megawatt Wind Turbine Blades PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (587 download)

DOWNLOAD NOW!


Book Synopsis Evaluation of the New B-REX Fatigue Testing System for Multi-megawatt Wind Turbine Blades by : Darris White

Download or read book Evaluation of the New B-REX Fatigue Testing System for Multi-megawatt Wind Turbine Blades written by Darris White and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Renewable Energy Laboratory (NREL) recently developed a new hybrid fatigue testing system called the Blade Resonance Excitation (B-REX) test system. The new system uses 65% less energy to test large wind turbine blades in half the time of NREL's dual-axis forced-displacement test method with lower equipment and operating costs. The B-REX is a dual-axis test system that combines resonance excitation with forced hydraulic loading to reduce the total test time required while representing the operating strains on the critical inboard blade stations more accurately than a single-axis test system. The analysis and testing required to fully implement the B-REX was significant. To control unanticipated blade motion and vibrations caused by dynamic coupling between the flap, lead-lag, and torsional directions, we needed to incorporate additional test hardware and control software. We evaluated the B-REX test system under stable operating conditions using a combination of various sensors. We then compared our results with results from the same blade, tested previously using NREL's dual-axis forced-displacement test method. Experimental results indicate that strain levels produced by the B-REX system accurately replicated the forced-displacement method. This paper describes the challenges we encountered while developing the new blade fatigue test system and the experimental results that validate its accuracy.

Wind Energy Explained

Download Wind Energy Explained PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 111936745X
Total Pages : 853 pages
Book Rating : 4.1/5 (193 download)

DOWNLOAD NOW!


Book Synopsis Wind Energy Explained by : James F. Manwell

Download or read book Wind Energy Explained written by James F. Manwell and published by John Wiley & Sons. This book was released on 2024-06-10 with total page 853 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative and bestselling textbook detailing the many aspects of using wind as an energy source Wind Energy Explained provides complete and comprehensive coverage on the topic of wind energy, starting with general concepts like the history of and rationale for wind energy and continuing into specific technological components and applications along with the new recent developments in the field. Divided into 16 chapters, this edition includes up-to-date data, diagrams, and illustrations, boasting an impressive 35% new material including new sections on metocean design conditions, wind turbine design, wind power plants and the electrical system, fixed and floating offshore wind turbines, project development, permitting and environmental risks and benefits, turbine installation, operation and maintenance, and high penetration wind energy systems and power-to-X. Wind Energy Explained also includes information on: Modern wind turbines, covering the design and their many components such as the rotor, drive train, and generator Aerodynamics of wind energy, covering one-dimensional momentum theory, the Betz limit, and ideal horizontal axis wind turbine with wake rotation Environmental external design conditions, such as wind, waves, currents, tides, salinity, floating ice, and many more Commonly used materials and components, such as steel, composites, copper, and concrete, plus machinery elements, such as shafts, couplings, bearings, and gears Modern design methods, including probabilistic design Environmental effects and mitigation strategies for wind project siting and the role of public engagement in the development process This book offers a complete examination of one of the most promising sources of renewable energy and is a great introduction to this cross-disciplinary field for practicing engineers. It may also be used as a textbook resource for university level courses in wind energy, both introductory and advanced.

National Wind Tecnology Center Provides Dual Axis Resonant Blade Testing

Download National Wind Tecnology Center Provides Dual Axis Resonant Blade Testing PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (94 download)

DOWNLOAD NOW!


Book Synopsis National Wind Tecnology Center Provides Dual Axis Resonant Blade Testing by :

Download or read book National Wind Tecnology Center Provides Dual Axis Resonant Blade Testing written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: NREL's Structural Testing Laboratory at the National Wind Technology Center (NWTC) provides experimental laboratories, computer facilities for analytical work, space for assembling components and turbines for atmospheric testing as well as office space for industry researchers. Fort Felker, center director at the NWTC, discusses NREL's state-of-the-art structural testing capabilities and shows a flapwise and edgewise blade test in progress.

Experimental and Applied Mechanics, Volume 4

Download Experimental and Applied Mechanics, Volume 4 PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3319224492
Total Pages : 199 pages
Book Rating : 4.3/5 (192 download)

DOWNLOAD NOW!


Book Synopsis Experimental and Applied Mechanics, Volume 4 by : Cesar Sciammarella

Download or read book Experimental and Applied Mechanics, Volume 4 written by Cesar Sciammarella and published by Springer. This book was released on 2015-10-30 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental and Applied Mechanics, Volume 4 of the Proceedings of the 2015SEM Annual Conference& Exposition on Experimental and Applied Mechanics, the fourth volume of nine from the Conference, brings together contributions to important areas of research and engineering. The collection presents early findings and case studies on a wide range of topics, including: Advanced Methods for Frontier Applications, Non-Homogeneous Parameters Identification, Teaching Experimental Mechanics in the 21st Century, Material Characterization and Testing, Mechanics of Interfaces Novel Applications of Experimental Mechanics

Wind Turbine Control and Monitoring

Download Wind Turbine Control and Monitoring PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3319084135
Total Pages : 462 pages
Book Rating : 4.3/5 (19 download)

DOWNLOAD NOW!


Book Synopsis Wind Turbine Control and Monitoring by : Ningsu Luo

Download or read book Wind Turbine Control and Monitoring written by Ningsu Luo and published by Springer. This book was released on 2014-08-30 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maximizing reader insights into the latest technical developments and trends involving wind turbine control and monitoring, fault diagnosis, and wind power systems, ‘Wind Turbine Control and Monitoring’ presents an accessible and straightforward introduction to wind turbines, but also includes an in-depth analysis incorporating illustrations, tables and examples on how to use wind turbine modeling and simulation software. Featuring analysis from leading experts and researchers in the field, the book provides new understanding, methodologies and algorithms of control and monitoring, computer tools for modeling and simulation, and advances the current state-of-the-art on wind turbine monitoring and fault diagnosis; power converter systems; and cooperative & fault-tolerant control systems for maximizing the wind power generation and reducing the maintenance cost. This book is primarily intended for researchers in the field of wind turbines, control, mechatronics and energy; postgraduates in the field of mechanical and electrical engineering; and graduate and senior undergraduate students in engineering wishing to expand their knowledge of wind energy systems. The book will also interest practicing engineers dealing with wind technology who will benefit from the comprehensive coverage of the theoretic control topics, the simplicity of the models and the use of commonly available control algorithms and monitoring techniques.

Special Topics in Structural Dynamics, Volume 6

Download Special Topics in Structural Dynamics, Volume 6 PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3319150480
Total Pages : 205 pages
Book Rating : 4.3/5 (191 download)

DOWNLOAD NOW!


Book Synopsis Special Topics in Structural Dynamics, Volume 6 by : Randall Allemang

Download or read book Special Topics in Structural Dynamics, Volume 6 written by Randall Allemang and published by Springer. This book was released on 2015-04-20 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special Topics in Structural Dynamics, Volume 6: Proceedings of the 33rd IMAC, A Conference and Exposition on Structural Dynamics, 2015, the sixth volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on: Aircraft/Aerospace Active Control Analytical Methods System Identification Sensors and Instrumentation

Proceedings of the American Society for Composites 2014-Twenty-ninth Technical Conference on Composite Materials

Download Proceedings of the American Society for Composites 2014-Twenty-ninth Technical Conference on Composite Materials PDF Online Free

Author :
Publisher : DEStech Publications, Inc
ISBN 13 : 1605951242
Total Pages : 3583 pages
Book Rating : 4.6/5 (59 download)

DOWNLOAD NOW!


Book Synopsis Proceedings of the American Society for Composites 2014-Twenty-ninth Technical Conference on Composite Materials by : Hyonny Kim

Download or read book Proceedings of the American Society for Composites 2014-Twenty-ninth Technical Conference on Composite Materials written by Hyonny Kim and published by DEStech Publications, Inc. This book was released on 2014-09-17 with total page 3583 pages. Available in PDF, EPUB and Kindle. Book excerpt: New and not previously published U.S. and international research on composite and nanocomposite materialsFocus on health monitoring/diagnosis, multifunctionality, self-healing, crashworthiness, integrated computational materials engineering (ICME), and moreApplications to aircraft, armor, bridges, ships, and civil structures This fully searchable CD-ROM contains 270 original research papers on all phases of composite materials, presented by specialists from universities, NASA and private corporations such as Boeing. The document is divided into the following sections: Aviation Safety and Aircraft Structures; Armor and Protection; Multifunctional Composites; Effects of Defects; Out of Autoclave Processing; Sustainable Processing; Design and Manufacturing; Stability and Postbuckling; Crashworthiness; Impact and Dynamic Response; Natural, Biobased and Green; Integrated Computational Materials Engineering (ICME); Structural Optimization; Uncertainty Quantification; NDE and SHM Monitoring; Progressive Damage Modeling; Molecular Modeling; Marine Composites; Simulation Tools; Interlaminar Properties; Civil Structures; Textiles. The CD-ROM displays figures and illustrations in articles in full color along with a title screen and main menu screen. Each user can link to all papers from the Table of Contents and Author Index and also link to papers and front matter by using the global bookmarks which allow navigation of the entire CD-ROM from every article. Search features on the CD-ROM can be by full text including all key words, article title, author name, and session title. The CD-ROM has Autorun feature for Windows 2000 or higher products and can also be used with Macintosh computers. The CD includes the program for Adobe Acrobat Reader with Search 11.0. One year of technical support is included with your purchase of this product.

Eigenfrequency Controlled Dual Axis Excitation System for Wind Turbine Blades

Download Eigenfrequency Controlled Dual Axis Excitation System for Wind Turbine Blades PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)

DOWNLOAD NOW!


Book Synopsis Eigenfrequency Controlled Dual Axis Excitation System for Wind Turbine Blades by :

Download or read book Eigenfrequency Controlled Dual Axis Excitation System for Wind Turbine Blades written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: