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Proceedings Papers

Graph-Based Interpretation of L-System Encodings Toward Aeroelastic Topology Optimization of a Morphing Airfoil in Supersonic Flow

Brent R. Bielefeldt, Darren J. Hartl, Joshua D. Hodson, Gregory W. Reich, Philip S. Beran, Alexander M. Pankonien, Joshua D. Deaton

Proc. ASME. SMASIS2019, ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A013, September 9–11, 2019

Paper No: SMASIS2019-5609

DOI: https://doi.org/10.1115/SMASIS2019-5609

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Topics: Airfoils, Optimization, Supersonic flow, Topology, Design, Actuators, Aircraft, Algorithms, Biomimetics, Spar platforms

Journal Articles

L-System-Generated Mechanism Topology Optimization Using Graph-Based Interpretation

Brent R. Bielefeldt, Ergun Akleman, Gregory W. Reich, Philip S. Beran, Darren J. Hartl

J. Mechanisms Robotics. April 2019, 11(2): 020905.

Paper No: JMR-18-1369

DOI: https://doi.org/10.1115/1.4042512

Published Online: February 22, 2019

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Topics: Design, Optimization, Topology

Proceedings Papers

L-System-Generated Topology Optimization of Compliant Mechanisms Using Graph-Based Interpretation

Brent R. Bielefeldt, Darren J. Hartl, Ergun Akleman

Proc. ASME. IDETC-CIE2018, Volume 5B: 42nd Mechanisms and Robotics Conference, V05BT07A001, August 26–29, 2018

Paper No: DETC2018-85225

DOI: https://doi.org/10.1115/DETC2018-85225

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Topics: Compliant mechanisms, Optimization, Topology, Design, Density, Genetic algorithms

Proceedings Papers

Analysis and Design of an Active Self-Folding Antenna

Edwin A. Peraza Hernandez, Darren J. Hartl, Dimitris C. Lagoudas

Proc. ASME. IDETC-CIE2017, Volume 5B: 41st Mechanisms and Robotics Conference, V05BT08A049, August 6–9, 2017

Paper No: DETC2017-67855

DOI: https://doi.org/10.1115/DETC2017-67855

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Topics: Design, Shapes, Active materials, Shape memory alloys, Structural analysis

Proceedings Papers

Graphical Material Selection Methods for Multi-Constraint, Multi-Functional Composites Pressure Vessels

Jeffery W. Baur, Darren J. Hartl, Geoff J. Frank, Robyn Bradford, Gregory Huff

Proc. ASME. PVP2017, Volume 6A: Materials and Fabrication, V06AT06A058, July 16–20, 2017

Paper No: PVP2017-65969

DOI: https://doi.org/10.1115/PVP2017-65969

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Topics: Composite materials, Pressure vessels, Liquid metals, Thermal management

Proceedings Papers

Design of Origami Structures With Smooth Folds

Edwin A. Peraza Hernandez, Darren J. Hartl, Dimitris C. Lagoudas

Proc. ASME. SMASIS2016, Volume 2: Modeling, Simulation and Control; Bio-Inspired Smart Materials and Systems; Energy Harvesting, V002T03A018, September 28–30, 2016

Paper No: SMASIS2016-9195

DOI: https://doi.org/10.1115/SMASIS2016-9195

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Topics: Design, Shapes, Adaptive structures, Deformation, Design methodology, Geometry, Kinematics, Manufacturing, Origami-inspired design, Testing

Journal Articles

Kinematics of Origami Structures With Smooth Folds

Edwin A. Peraza Hernandez, Darren J. Hartl, Dimitris C. Lagoudas

J. Mechanisms Robotics. December 2016, 8(6): 061019.

Paper No: JMR-16-1115

DOI: https://doi.org/10.1115/1.4034299

Published Online: October 11, 2016

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Topics: Deformation, Kinematics, Shapes, Simulation, Rotation, Modeling, Geometry

Includes: Supplementary data

Journal Articles

Design Tools for Patterned Self-Folding Reconfigurable Structures Based on Programmable Active Laminates

Edwin A. Peraza Hernandez, Darren J. Hartl, Richard J. Malak, Jr., Ergun Akleman, Ozgur Gonen, Han-Wei Kung

J. Mechanisms Robotics. June 2016, 8(3): 031015.

Paper No: JMR-15-1176

DOI: https://doi.org/10.1115/1.4031955

Published Online: March 11, 2016

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Topics: Computer software, Design, Finite element analysis, Laminates, Shapes

Includes: Supplementary data

Proceedings Papers

An Experimental and Numerical Study of Shape Memory Alloy-Based Tensegrity/Origami Structures

John L. Rohmer, Edwin A. Peraza Hernandez, Robert E. Skelton, Darren J. Hartl, Dimitris C. Lagoudas

Proc. ASME. IMECE2015, Volume 9: Mechanics of Solids, Structures and Fluids, V009T12A064, November 13–19, 2015

Paper No: IMECE2015-51928

DOI: https://doi.org/10.1115/IMECE2015-51928

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Topics: Alloys, Shapes, Tensegrity, Shape memory alloys, Cylinders, Deflection, Design, Engineering prototypes, Finite element analysis, Manufacturing

Journal Articles

Parameterized Design Optimization of a Magnetohydrodynamic Liquid Metal Active Cooling Concept

Darren J. Hartl, Edgar Galvan, Richard J. Malak, Jeffrey W. Baur

J. Mech. Des. March 2016, 138(3): 031402.

Paper No: MD-15-1479

DOI: https://doi.org/10.1115/1.4032268

Published Online: January 18, 2016

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Topics: Design, Magnetohydrodynamics, Optimization, Cooling, Algebra

Proceedings Papers

Analysis and Optimization of a Shape Memory Alloy-Based Self-Folding Sheet Considering Material Uncertainties

Edwin A. Peraza Hernandez, Darren J. Hartl, Richard J. Malak, Jr., Dimitris C. Lagoudas

Proc. ASME. SMASIS2015, Volume 1: Development and Characterization of Multifunctional Materials; Mechanics and Behavior of Active Materials; Modeling, Simulation and Control of Adaptive Systems, V001T01A013, September 21–23, 2015

Paper No: SMASIS2015-9001

DOI: https://doi.org/10.1115/SMASIS2015-9001

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Topics: Alloys, Optimization, Shapes, Uncertainty, Wire, Design, Elastomers, Materials properties, Adaptive structures, Degrees of freedom

Proceedings Papers

Characterization and Modeling of Thermo-Mechanical Fatigue in Equiatomic NiTi Actuators

Robert W. Wheeler, Darren J. Hartl, Yves Chemisky, Dimitris C. Lagoudas

Proc. ASME. SMASIS2014, Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bioinspired Smart Materials and Systems; Energy Harvesting, V002T02A009, September 8–10, 2014

Paper No: SMASIS2014-7591

DOI: https://doi.org/10.1115/SMASIS2014-7591

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Topics: Actuators, Fatigue, Modeling, Nickel titanium alloys, Thermomechanics, Heat, Stress, Damage, Temperature, Aerospace industry

Proceedings Papers

Development and Characterization of Embedded Sensory Particles Using Multi-Scale 3D Digital Image Correlation

Stephen R. Cornell, William P. Leser, Jacob D. Hochhalter, John A. Newman, Darren J. Hartl

Paper No: SMASIS2014-7608

DOI: https://doi.org/10.1115/SMASIS2014-7608

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Topics: Particulate matter, Fatigue cracks, Phase transitions, Fracture (Materials), Acoustics, Aluminum alloys, Deformation, Density, NASA, Nickel titanium alloys

Proceedings Papers

Design and Optimization of an SMA-Based Self-Folding Structural Sheet With Sparse Insulating Layers

Edwin A. Peraza Hernandez, Darren J. Hartl, Andreas Kotz, Richard J. Malak, Jr

Proc. ASME. SMASIS2014, Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Structural Health Monitoring; Keynote Presentation, V001T01A015, September 8–10, 2014

Paper No: SMASIS2014-7540

DOI: https://doi.org/10.1115/SMASIS2014-7540

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Topics: Design, Optimization, Finite element analysis, Heat transfer, Origami-inspired design, Robotics, Shape memory alloys, Storage, Wire, Wire mesh

Proceedings Papers

Experimental Analysis of Self-Folding SMA-Based Sheet Design for Simulation Validation

Aaron C. Powledge, Darren J. Hartl, Richard J. Malak

Paper No: SMASIS2014-7546

DOI: https://doi.org/10.1115/SMASIS2014-7546

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Topics: Design, Experimental analysis, Simulation, Finite element analysis, Deformation, Temperature, Engineering design, Heating, Laminates, Origami-inspired design

Proceedings Papers

Development of a SMA-Based, Slat-Cove Filler for Reduction of Aeroacoustic Noise Associated With Transport-Class Aircraft Wings

Travis L. Turner, Reggie T. Kidd, Darren J. Hartl, William D. Scholten

Proc. ASME. SMASIS2013, Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting, V002T02A005, September 16–18, 2013

Paper No: SMASIS2013-3100

DOI: https://doi.org/10.1115/SMASIS2013-3100

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Topics: Aircraft, Fillers (Materials), Noise (Sound), Wings, Design, Aerodynamic flow, Cavities, Displacement, Flight, Stress

Proceedings Papers

Experimental Validation of a Shape Memory Alloy Constitutive Model by Heterogeneous Thermal Loading Using Infrared Thermography and Digital Image Correlation

Stephen R. Cornell, Darren J. Hartl, Dimitris C. Lagoudas

Paper No: SMASIS2013-3143

DOI: https://doi.org/10.1115/SMASIS2013-3143

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Topics: Constitutive equations, Shape memory alloys, Thermography, Heating, Calibration, Heating and cooling, Deformation, Nickel titanium alloys

Proceedings Papers

A Study of Actuation Fatigue of Shape Memory Alloy

Babatunde O. Agboola, Darren J. Hartl, Dimitris C. Lagoudas

Proc. ASME. SMASIS2012, Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting, 287-293, September 19–21, 2012

Paper No: SMASIS2012-8222

DOI: https://doi.org/10.1115/SMASIS2012-8222

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Topics: Fatigue, Shape memory alloys, Failure, Cycles, Actuators, Design, Fatigue life, Nickel, Stress, Temperature

Proceedings Papers

Coexistense of Creep and Transformation in High Temperature Shape Memory Alloys

Dimitris C. Lagoudas, George Chatzigeorgiou, Darren J. Hartl, Parikshith K. Kumar

Proc. ASME. IMECE2009, Volume 12: Micro and Nano Systems, Parts A and B, 45-51, November 13–19, 2009

Paper No: IMECE2009-11718

DOI: https://doi.org/10.1115/IMECE2009-11718

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Topics: Creep, High temperature, Shape memory alloys, Phase transitions, Actuators, Calibration, Constitutive equations, Metals, Viscoplasticity

Journal citation

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Supplemental Material

Graph-Based Interpretation of L-System Encodings Toward Aeroelastic Topology Optimization of a Morphing Airfoil in Supersonic Flow

L-System-Generated Mechanism Topology Optimization Using Graph-Based Interpretation

L-System-Generated Topology Optimization of Compliant Mechanisms Using Graph-Based Interpretation

Analysis and Design of an Active Self-Folding Antenna

Graphical Material Selection Methods for Multi-Constraint, Multi-Functional Composites Pressure Vessels

Design of Origami Structures With Smooth Folds

Kinematics of Origami Structures With Smooth Folds

Design Tools for Patterned Self-Folding Reconfigurable Structures Based on Programmable Active Laminates

An Experimental and Numerical Study of Shape Memory Alloy-Based Tensegrity/Origami Structures

Parameterized Design Optimization of a Magnetohydrodynamic Liquid Metal Active Cooling Concept

Analysis and Optimization of a Shape Memory Alloy-Based Self-Folding Sheet Considering Material Uncertainties

Characterization and Modeling of Thermo-Mechanical Fatigue in Equiatomic NiTi Actuators

Development and Characterization of Embedded Sensory Particles Using Multi-Scale 3D Digital Image Correlation

Design and Optimization of an SMA-Based Self-Folding Structural Sheet With Sparse Insulating Layers

Experimental Analysis of Self-Folding SMA-Based Sheet Design for Simulation Validation

Development of a SMA-Based, Slat-Cove Filler for Reduction of Aeroacoustic Noise Associated With Transport-Class Aircraft Wings

Experimental Validation of a Shape Memory Alloy Constitutive Model by Heterogeneous Thermal Loading Using Infrared Thermography and Digital Image Correlation

A Study of Actuation Fatigue of Shape Memory Alloy

Coexistense of Creep and Transformation in High Temperature Shape Memory Alloys

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