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Leon M. Headings
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Proceedings Papers

Analytical and Computational Modeling of FRP-Metal Joints Made by Ultrasonic Additive Manufacturing

Ningxiner Zhao, Hongqi Guo, Leon M. Headings, Marcelo J. Dapino
Proc. ASME. IMECE2022, Volume 2A: Advanced Manufacturing, V02AT02A035, October 30–November 3, 2022
Paper No: IMECE2022-96827
DOI: https://doi.org/10.1115/IMECE2022-96827
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Topics: Additive manufacturing, Computer simulation, Fiber reinforced plastics, Metals
Journal Articles

Effect of Process Parameters on Interfacial Temperature and Shear Strength of Ultrasonic Additive Manufacturing of Carbon Steel 4130

Tianyang Han, Leon M. Headings, Ryan Hahnlen, Marcelo J. Dapino
Journal: Journal of Manufacturing Science and Engineering
Article Type: Technical Briefs
J. Manuf. Sci. Eng. August 2022, 144(8): 084501.
Paper No: MANU-20-1554
DOI: https://doi.org/10.1115/1.4053278
Published Online: February 16, 2022
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Topics: Shear (Mechanics), Shear strength, Temperature, Welding, Additive manufacturing, Temperature measurement, Carbon steel, Steel
Journal Articles

Modeling of Soft Robotic Grippers Integrated With Fluidic Prestressed Composite Actuators

Yitong Zhou, Leon M. Headings, Marcelo J. Dapino
Journal: Journal of Mechanisms and Robotics
Article Type: Research Papers
J. Mechanisms Robotics. June 2022, 14(3): 031001.
Paper No: JMR-21-1109
DOI: https://doi.org/10.1115/1.4052699
Published Online: November 15, 2021
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Topics: Actuators, Composite materials, Grasping, Grippers, Shapes, Pressure
Journal Articles

Discrete Layer Jamming for Variable Stiffness Co-Robot Arms

Yitong Zhou, Leon M. Headings, Marcelo J. Dapino
Journal: Journal of Mechanisms and Robotics
Article Type: Design Innovation Paper
J. Mechanisms Robotics. February 2020, 12(1): 015001.
Paper No: JMR-18-1416
DOI: https://doi.org/10.1115/1.4044537
Published Online: October 16, 2019
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Topics: Clamps (Tools), Pressure, Stiffness, Laminates, Friction, Robots, Design
Journal Articles

Seam Welding of Aluminum Sheet Using Ultrasonic Additive Manufacturing System

Paul J. Wolcott, Christopher Pawlowski, Leon M. Headings, Marcelo J. Dapino
Journal: Journal of Manufacturing Science and Engineering
Article Type: Research-Article
J. Manuf. Sci. Eng. January 2017, 139(1): 011010.
Paper No: MANU-15-1202
DOI: https://doi.org/10.1115/1.4034007
Published Online: August 15, 2016
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Topics: Additive manufacturing, Aluminum, Design, Fatigue testing, Finite element analysis, Heat, High temperature, Joining, Temperature, Tensile strength
Proceedings Papers

Self-Folding Laminated Composites for Smart Origami Structures

Venkata Siva C. Chillara, Leon M. Headings, Marcelo J. Dapino
Proc. ASME. SMASIS2015, Volume 2: Integrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting, V002T04A011, September 21–23, 2015
Paper No: SMASIS2015-8968
DOI: https://doi.org/10.1115/SMASIS2015-8968
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Topics: Composite materials, Shapes, Skin, Smart materials, Equilibrium (Physics), Fibers, Laminates, Lightweight structures, Model development, Plate theory
Proceedings Papers

Effects of Sensor Geometry on the Stress-Averaged Output of PVDF Sensors in Tires

Leon M. Headings, Jungkyu Park, Marcelo J. Dapino
Proc. ASME. SMASIS2014, Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bioinspired Smart Materials and Systems; Energy Harvesting, V002T04A024, September 8–10, 2014
Paper No: SMASIS2014-7669
DOI: https://doi.org/10.1115/SMASIS2014-7669
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Topics: Geometry, Sensors, Stress, Tires, Design, Shapes, Computer simulation, Constitutive equations, Electrodes, Signal processing
Proceedings Papers

Speed of Sound Measurement in Solids Using Polyvinylidene Fluoride (PVDF) Sensors

Leon M. Headings, Kunal Kotian, Marcelo J. Dapino
Proc. ASME. SMASIS2013, Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Integrated System Design and Implementation, V001T04A012, September 16–18, 2013
Paper No: SMASIS2013-3206
DOI: https://doi.org/10.1115/SMASIS2013-3206
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Topics: Sensors, Solids, Speed of sound, Stress, Waves, Finite element analysis, Damage, Engineering simulation, Signals, Simulation
Proceedings Papers

Analysis of Shape Memory Polymer-Alloy Composites: Modeling and Parametric Studies

Jungkyu Park, Leon M. Headings, Marcelo J. Dapino, Jeffery W. Baur, Gyaneshwar P. Tandon
Proc. ASME. SMASIS2012, Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Structural Health Monitoring, 227-236, September 19–21, 2012
Paper No: SMASIS2012-8257
DOI: https://doi.org/10.1115/SMASIS2012-8257
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Topics: Composite materials, Modeling, Plastic compounds, Shape memory alloys, Shape memory polymers, Shapes, Stress
Proceedings Papers

Modeling and Design of Building-Integrated Thermoelectrics

Leon M. Headings, Gregory N. Washington
Proc. ASME. SMASIS2011, ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 767-776, September 18–21, 2011
Paper No: SMASIS2011-5214
DOI: https://doi.org/10.1115/SMASIS2011-5214
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Topics: Boundary-value problems, Computer simulation, Construction, Control algorithms, Design, Energy consumption, Heat, Heat pumps, Heating and cooling, Modeling
Proceedings Papers

High Temperature Multi-Fuel Combustion-Powered Thermoelectric Auxiliary Power Unit

Leon M. Headings, Gregory N. Washington, Shawn Midlam-Mohler, Joseph P. Heremans
Proc. ASME. SMASIS2009, Volume 1: Active Materials, Mechanics and Behavior; Modeling, Simulation and Control, 123-130, September 21–23, 2009
Paper No: SMASIS2009-1290
DOI: https://doi.org/10.1115/SMASIS2009-1290
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Topics: Combustion, Fuels, High temperature, Generators, Heat, Vehicles, Engineering prototypes, Catalysts, Chemical energy, Computers
Proceedings Papers

High Temperature Thermoelectric Auxiliary Power Unit for Automotive Applications

Leon M. Headings, Shawn Midlam-Mohler, Gregory N. Washington, Joseph P. Heremans
Proc. ASME. SMASIS2008, Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 145-152, October 28–30, 2008
Paper No: SMASIS2008-610
DOI: https://doi.org/10.1115/SMASIS2008-610
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Topics: Automotive industry, High temperature, Diesel, Generators, Energy generation, Engineering prototypes, Advanced materials, Combustion, Combustion chambers, Design
Proceedings Papers

Building-Integrated Thermoelectrics as Active Insulators and Heat Pumps

Leon M. Headings, Gregory N. Washington
Proc. ASME. IMECE2007, Volume 10: Mechanics of Solids and Structures, Parts A and B, 269-278, November 11–15, 2007
Paper No: IMECE2007-43122
DOI: https://doi.org/10.1115/IMECE2007-43122
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Topics: Air conditioning, Capacitance, Commercial construction, Design, Energy consumption, Energy dissipation, Energy efficiency, Heat pumps, Heating, Heating and cooling
Proceedings Papers

Stiffness Controlled Piezoelectric Stick-Slip Actuator for Rapid Positioning Applications

Leon M. Headings, Gregory N. Washington
Proc. ASME. IMECE2005, Aerospace, 249-258, November 5–11, 2005
Paper No: IMECE2005-80916
DOI: https://doi.org/10.1115/IMECE2005-80916
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Topics: Actuators, Stick-slip, Stiffness, Screws, Design, Waves, Finite element analysis, Levers, Resolution (Optics), Smart materials