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U of U MEEN 4000 - Development of Turbine Blade Strengths Test-Bed

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ME4000 2006 2007 W E R P Phase III Development of Turbine Blade Strengths Test Bed Department of Mechanical Engineering University of Utah Salt Lake City UT 84112 9208 Nick Shingleton Mike Beeman Douglas Aguirre ME 4000 Final Report Section Front Matter 1 14 2019 WERP Phase III Test bed Development Section 1 Front Matter Executive Summary Alternative energy sources have become a necessary part of environmental conservation Wind 1 1 powered generators have a vital role in green energy as a method of harnessing the earth s natural resources Wind is an attractive renewable energy source in that environmental impact is minimal and wind is an inexhaustible energy source The 2006 Wind Energy Research Program WERP is dedicated to improving wind turbine airfoil design and will continue the research and development of the previous year s blade manufacturing technique The team will focus on completing and testing airfoils designed by last year s team This will also include validating the BladeSim airfoil simulation software developed by last year s team Research into composite material strength testing load modeling and various other aspects of the production of carbon fiber blades will be conducted An innovative bladder molded technique will be utilized to create the structural skin design of the airfoils To minimize costs the 2005 WERP team created foam molds to produce the tools for manufacturing blades A Bend Twist coupling was also incorporated into the design to achieve a passive blade speed control system The additive affect of these unconventional processes can lead to defects and inefficiencies in the blades The objective of this project will be to validate the use of this low cost manufacturing technique and blade design Three full scale blades will be built and strength tested using the University of Utah composites lab Upon completion of the airfoil a test bed platform for statically applying bending and torsion loads is required The blades also require dynamic load testing for fracture toughness vibration and the Bend Twist coupling This will require the production of a hub blade interface to attach the blades to WERP s modular test bed Assuming funding limitations and time constraints are met this will be the second phase of the project and will leave future teams with a complete blade and hub assembly The following report describes the manufacturing and testing processes and outlines the findings of this project 2 ME 4000 Final Report Section Front Matter 1 14 2019 WERP Phase III Test bed Development 1 2 Table of Contents 1 Front Matter 1 1 1 1 2 1 3 Executive Summary 2 Table of Contents 3 List of Figures 5 1 4 List of Tables 6 Context 7 2 1 Need Statement 7 2 2 Problem Statement 7 2 3 Design Team 8 2 3 1 Team Composition 8 2 3 2 Teaching Team 9 2 4 Team Circumstances 10 3 Design Requirements 11 3 1 WERP Continuation 11 2 3 2 3 3 4 Functional Requirements 11 Physical Requirements 13 3 4 Assumptions 14 Design Development 15 4 1 Overview 15 4 2 Benchmarking 15 4 3 Concept Generation 15 4 3 1 4 3 2 4 3 3 4 4 5 Blade Foundation 15 Load Tower 17 Load Distribution 17 Design Refinement 18 4 4 1 Blade Foundation 18 4 4 2 Load Tower 20 4 4 3 Whiffle Tree Load Distribution 22 Design Specifications 24 5 1 Introduction 24 5 1 2 Background 24 5 1 2 1 Anchor Mount 25 5 1 2 2 Load Tower 25 5 1 2 3 Whiffle Tree 25 5 1 2 4 Load Metering System 25 5 2 Functional Specifications 26 5 3 6 5 2 1 Load Tower 26 5 2 2 5 2 3 Whiffle Tree System 27 Load Metering System 28 5 1 2 4 Critical Function Prototype 29 Physical Specifications 29 5 3 1 Anchor Mount 29 5 3 2 Load Tower Parameters 29 5 3 3 Whiffle Tree 30 Recommendations 31 3 ME 4000 Final Report Section Front Matter 6 1 6 1 1 1 14 2019 WERP Phase III Test bed Development Vision 31 Blade Test Bed 31 7 Project Planning 32 7 1 Project Outline 32 7 2 Project Budget 32 8 Resources and Reference Materials 35 8 1 Noted References 35 9 8 2 General References 35 8 3 Resources Consulted 35 8 4 Material Suppliers 35 Appendices 36 9 1 Customer Requirements 36 9 2 Ideas and Sketches of Test bed 36 4 ME 4000 Final Report Section Front Matter 1 3 1 14 2019 WERP Phase III Test bed Development List of Figures Fig 1 Coordinate System referenced in Table 2 and 3 created by Mike Hommel 13 Fig 2 Solid model of blade foundation quad pod concept 15 Fig 3 Blade Foundation with Boundary Conditions 17 Fig 4 Load Tower variation 1 symmetry and loads shown as modeled in ANSYS 19 Fig 5 I beam dimension constraints imposed by hoist hardware 20 Fig 6 Load Tower variation 2 20 Fig 7 Load Tower variation 3 20 Fig 8 Screen shot of whiffle tree software with main inputs highlighted 22 Fig 9 Blade Foundation stand solid Model 25 Fig 10 Load Tower CAD Solid Model 26 Fig 11 Whiffle Tree System CAD Solid Model 27 Fig 12 Gantt Chart for first semester 32 Fig 13 Gannt Chart for second semester 32 5 ME 4000 Final Report Section Front Matter 1 3 1 14 2019 WERP Phase III Test bed Development List of Tables Table 1 WERP Phase I Wind Turbine Design Specifications 11 Table 2 Reactions at blade foundation caused by 50 year gust predicted by BladeSim 13 Table 3 Reactions at blade foundation during peak performance as predicted by BladeSim 13 Table 4 Anchor Mount Specifications 28 Table 5 Load Tower Specifications 29 Table 6 Tower I Beam Specifications and I beam parameter schematic 29 Table 7 Whiffle Tree Specifications 30 Table 8 Budget For WERP phase III team 31 6 ME 4000 Final Report 1 14 2019 WERP Phase III Test bed Development Section 2 Context 2 1 Need Statement Due to the increase in population energy demands have increased worldwide Along with the energy rise and the depletion of petroleum based fuels the need for nonpolluting alternative energy sources are in demand Wind Power is a renewable and low level pollution energy source making it an attractive solution The Wind Energy Research Program WERP is an ongoing design project that is paving the way for innovative advances in wind turbine power generation The development of a wind turbine consists of many complicated systems and each subsystem needs extreme care to decrease the modes of failure to the overall system One particular subsystem that essentially governs the overall effectiveness of the wind turbine performance are its blades Turbine blades are the heart of harnessing wind power and it is essential to yield an optimal blade design in order to achieve the desired efficiency and effectiveness of the overall wind turbine


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U of U MEEN 4000 - Development of Turbine Blade Strengths Test-Bed

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