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Journal Articles

Computing Marginal Cost of Durability of Energy Systems Components by Structural Optimization With Fatigue Constraints

Felipe M. Pasquali, John F. Hall
Journal: Journal of Energy Resources Technology
Article Type: Technical Briefs
J. Energy Resour. Technol. June 2022, 144(6): 064501.
Paper No: JERT-21-1470
DOI: https://doi.org/10.1115/1.4052038
Published Online: August 24, 2021
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Topics: Design, Durability, Fatigue, Wind turbines, Damage
Proceedings Papers

Decision-Based Design Method for Computing Marginal Cost of Durability

Felipe M. Pasquali, Jonatan Meza, John F. Hall
Proc. ASME. IDETC-CIE2020, Volume 6: 25th Design for Manufacturing and the Life Cycle Conference (DFMLC), V006T06A023, August 17–19, 2020
Paper No: DETC2020-22511
DOI: https://doi.org/10.1115/DETC2020-22511
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Topics: Design methodology, Durability, Economics , Wind turbines, Design, Fatigue damage, Formal methods, Optimization
Proceedings Papers

Rule of Mixtures Model for 3D Printed Kevlar Reinforced Nylon: Determination of Volume Fraction Using Thermal Gravimetric Analysis

Anosh P. Amaria, Jason N. Armstrong, Felipe M. Pasquali, John F. Hall
Proc. ASME. IDETC-CIE2020, Volume 11A: 46th Design Automation Conference (DAC), V11AT11A032, August 17–19, 2020
Paper No: DETC2020-22506
DOI: https://doi.org/10.1115/DETC2020-22506
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Topics: Additive manufacturing, Fibers, Nylon fabrics, Thermogravimetry
Journal Articles

Control Framework and Integrative Design Method for an Adaptive Wind Turbine Blade

Hamid Khakpour Nejadkhaki, John F. Hall
Journal: Journal of Dynamic Systems, Measurement, and Control
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. October 2020, 142(10): 101001.
Paper No: DS-19-1483
DOI: https://doi.org/10.1115/1.4047098
Published Online: May 25, 2020
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Topics: Blades, Design, Shapes, Wind, Wind turbines, Wind velocity, Actuators
Proceedings Papers

Optimization Model for Owner-Based Microgrids Using LSTM Predicted Demand for Rural Development

Anosh P. Amaria, Ryan Nguyen, Joshua A. Davison, Souma Chowdhury, John F. Hall
Proc. ASME. IDETC-CIE2019, Volume 2A: 45th Design Automation Conference, V02AT03A025, August 18–21, 2019
Paper No: DETC2019-97964
DOI: https://doi.org/10.1115/DETC2019-97964
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Topics: Microgrids, Optimization
Proceedings Papers

Rule of Mixtures Model to Determine Elastic Modulus and Tensile Strength of 3D Printed Carbon Fiber Reinforced Nylon

Kaiyue Deng, Hamid Khakpour Nejadkhaki, Felipe M. Pasquali, Anosh P. Amaria, Jason N. Armstrong, John F. Hall
Proc. ASME. IDETC-CIE2019, Volume 2A: 45th Design Automation Conference, V02AT03A039, August 18–21, 2019
Paper No: DETC2019-98024
DOI: https://doi.org/10.1115/DETC2019-98024
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Topics: Additive manufacturing, Carbon fibers, Elastic moduli, Nylon fabrics, Tensile strength
Journal Articles

Weighted Least Squares Approach for an Adaptive Aerodynamic Engineered Structure With Twist Transformation

Fuzhao Mou, Hamid Khakpour Nejadkhaki, Aaron Estes, John F. Hall
Journal: Journal of Energy Resources Technology
Article Type: Research-Article
J. Energy Resour. Technol. May 2019, 141(5): 051207.
Paper No: JERT-18-1502
DOI: https://doi.org/10.1115/1.4042642
Published Online: February 18, 2019
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Topics: Actuators, Blades, Stiffness, Wind velocity, Design, Optimization
Proceedings Papers

Variable Twist Blade Transformation to Improve Wind Turbine Performance

Hamid Khakpour Nejadkhaki, John F. Hall
Proc. ASME. IMECE2018, Volume 6B: Energy, V06BT08A042, November 9–15, 2018
Paper No: IMECE2018-88433
DOI: https://doi.org/10.1115/IMECE2018-88433
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Topics: Blades, Wind turbines, Actuators, Shapes, Shells, Stiffness, Design, Geometry, Stress, Wind velocity
Proceedings Papers

Integrative Modeling Platform for Design and Control of an Adaptive Wind Turbine Blade

Hamid Khakpour Nejadkhaki, John F. Hall, Minghui Zheng, Teng Wu
Proc. ASME. DSCC2018, Volume 2: Control and Optimization of Connected and Automated Ground Vehicles; Dynamic Systems and Control Education; Dynamics and Control of Renewable Energy Systems; Energy Harvesting; Energy Systems; Estimation and Identification; Intelligent Transportation and Vehicles; Manufacturing; Mechatronics; Modeling and Control of IC Engines and Aftertreatment Systems; Modeling and Control of IC Engines and Powertrain Systems; Modeling and Management of Power Systems, V002T28A005, September 30–October 3, 2018
Paper No: DSCC2018-9235
DOI: https://doi.org/10.1115/DSCC2018-9235
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Topics: Blades, Design, Modeling, Wind turbines, Stress, Simulation models, Real-time control, Wind, Actuators, Dynamic systems
Proceedings Papers

Integrative Control and Design Framework for an Actively Variable Twist Wind Turbine Blade to Increase Efficiency

Hamid Khakpour Nejadkhaki, John F. Hall
Proc. ASME. IDETC-CIE2018, Volume 2A: 44th Design Automation Conference, V02AT03A004, August 26–29, 2018
Paper No: DETC2018-86098
DOI: https://doi.org/10.1115/DETC2018-86098
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Topics: Blades, Design, Wind turbines, Shapes, Actuators, Stiffness, Design engineering, Wind velocity, Additive manufacturing, Algorithms
Proceedings Papers

A Method for Evaluating Maintenance Capabilities in a Developing Community Using a Multiple DSM Framework

Ammar Nik Mutasim, Dillan Sayers, Felipe M. Pasquali, John F. Hall
Proc. ASME. IDETC-CIE2018, Volume 4: 23rd Design for Manufacturing and the Life Cycle Conference; 12th International Conference on Micro- and Nanosystems, V004T05A026, August 26–29, 2018
Paper No: DETC2018-86080
DOI: https://doi.org/10.1115/DETC2018-86080
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Topics: Maintenance, Maintainability, Decision making, Design, Energy sustainability
Journal Articles

Modeling and Design Method for an Adaptive Wind Turbine Blade With Out-of-Plane Twist

Hamid Khakpour Nejadkhaki, John F. Hall
Journal: Journal of Solar Energy Engineering
Article Type: Research-Article
J. Sol. Energy Eng. October 2018, 140(5): 051010.
Paper No: SOL-17-1491
DOI: https://doi.org/10.1115/1.4040104
Published Online: May 29, 2018
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Topics: Blades, Design, Wind turbines, Wind velocity, Design engineering, Optimization, Actuators, Shapes, Stiffness
Proceedings Papers

A Flexible Wind Turbine Blade With an Actively Variable Twist Distribution to Increase Region 2 Efficiency: Design and Control

Hamid Khakpour Nejadkhaki, John F. Hall
Proc. ASME. DSCC2017, Volume 3: Vibration in Mechanical Systems; Modeling and Validation; Dynamic Systems and Control Education; Vibrations and Control of Systems; Modeling and Estimation for Vehicle Safety and Integrity; Modeling and Control of IC Engines and Aftertreatment Systems; Unmanned Aerial Vehicles (UAVs) and Their Applications; Dynamics and Control of Renewable Energy Systems; Energy Harvesting; Control of Smart Buildings and Microgrids; Energy Systems, V003T40A006, October 11–13, 2017
Paper No: DSCC2017-5282
DOI: https://doi.org/10.1115/DSCC2017-5282
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Topics: Blades, Design, Wind turbines, Actuators, Stiffness, Additive manufacturing, Shapes, Simulation results, Wind velocity, Algorithms
Proceedings Papers

A Design Methodology for a Flexible Wind Turbine Blade With an Actively Variable Twist Distribution to Increase Region 2 Efficiency

Hamid Khakpour Nejadkhaki, John F. Hall
Proc. ASME. IDETC-CIE2017, Volume 2A: 43rd Design Automation Conference, V02AT03A025, August 6–9, 2017
Paper No: DETC2017-68302
DOI: https://doi.org/10.1115/DETC2017-68302
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Topics: Blades, Design methodology, Wind turbines, Design, Actuators, Geometry, Additive manufacturing, Shapes, Wind velocity, Algorithms
Proceedings Papers

A Framework for Wind Energy Conversion to Promote Sustainability in Product Design

Zachary Ball, Joe Szabo, Felipe M. Pasquali, John F. Hall
Proc. ASME. IDETC-CIE2017, Volume 7: 29th International Conference on Design Theory and Methodology, V007T06A040, August 6–9, 2017
Paper No: DETC2017-68393
DOI: https://doi.org/10.1115/DETC2017-68393
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Topics: Product design, Sustainability, Wind energy, Tradeoffs, Green design, Columns (Structural), Noise (Sound), Wind velocity, Carbon dioxide, Design
Journal Articles

A Methodology to Synthesize Gearbox and Control Design for Increased Power Production and Blade Root Stress Mitigation in a Small Wind Turbine

Hamid Khakpour Nejadkhaki, Amrita Lall, John F. Hall
Journal: Journal of Mechanical Design
Article Type: Research-Article
J. Mech. Des. August 2017, 139(8): 081404.
Paper No: MD-16-1605
DOI: https://doi.org/10.1115/1.4036998
Published Online: June 27, 2017
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Topics: Blades, Design, Energy generation, Gears, Stress, Wind turbines, Wind velocity, Rotors, Wind, Mechanical drives
Journal Articles

A Design Framework for Optimizing the Mechanical Performance, Cost, and Environmental Impact of a Wind Turbine Tower

Daniel Stratton, Daniel Martino, Felipe M. Pasquali, Kemper Lewis, John F. Hall
Journal: Journal of Solar Energy Engineering
Article Type: Research-Article
J. Sol. Energy Eng. August 2016, 138(4): 041008.
Paper No: SOL-15-1176
DOI: https://doi.org/10.1115/1.4033500
Published Online: May 12, 2016
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Topics: Design, Wind turbines, Optimization, Stress, Wind, Equipment performance
Journal Articles

An Integrated Control and Design Framework for Optimizing Energy Capture and Component Life for a Wind Turbine Variable Ratio Gearbox

John F. Hall, Dushyant Palejiya, Mohamed L. Shaltout, Dongmei Chen
Journal: Journal of Solar Energy Engineering
Article Type: Research-Article
J. Sol. Energy Eng. April 2015, 137(2): 021022.
Paper No: SOL-13-1235
DOI: https://doi.org/10.1115/1.4029812
Published Online: April 1, 2015
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Topics: Design, Gears, Mechanical drives, Wind turbines, Wind, Energy generation
Journal Articles

Optimal Control of a Wind Turbine With a Variable Ratio Gearbox for Maximum Energy Capture and Prolonged Gear Life

Mohamed L. Shaltout, John F. Hall, Dongmei Chen
Journal: Journal of Solar Energy Engineering
Article Type: Research-Article
J. Sol. Energy Eng. August 2014, 136(3): 031007.
Paper No: SOL-12-1189
DOI: https://doi.org/10.1115/1.4026676
Published Online: March 4, 2014
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Topics: Gear teeth, Gears, Mechanical drives, Weight (Mass), Wind, Wind turbines, Wind velocity, Energy generation, Design
Proceedings Papers

Wind Turbine Gearbox Control for Maximum Energy Capture and Prolonged Gear Life

Mohamed L. Shaltout, Nanzhu Zhao, John F. Hall, Dongmei Chen
Proc. ASME. DSCC2012-MOVIC2012, Volume 3: Renewable Energy Systems; Robotics; Robust Control; Single Track Vehicle Dynamics and Control; Stochastic Models, Control and Algorithms in Robotics; Structure Dynamics and Smart Structures; Surgical Robotics; Tire and Suspension Systems Modeling; Vehicle Dynamics and Control; Vibration and Energy; Vibration Control, 33-39, October 17–19, 2012
Paper No: DSCC2012-MOVIC2012-8719
DOI: https://doi.org/10.1115/DSCC2012-MOVIC2012-8719
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Topics: Gears, Mechanical drives, Wind turbines, Energy generation, Gear teeth, Service life (Equipment), Simulation results, Wind, Wind energy, Wind velocity