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Neil A. Duffie
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Proceedings Papers

Towards Improved Hybrid Joining of Aluminum Alloys to Carbon Fiber Composites With Friction Stir Welding

Daniel J. Franke, Justin D. Morrow, Neil A. Duffie, Michael Zinn, Frank E. Pfefferkorn
Proc. ASME. MSEC2016, Volume 1: Processing, V001T02A058, June 27–July 1, 2016
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2016-8747
https://doi.org/10.1115/MSEC2016-8747
View Paper titled, Towards Improved Hybrid Joining of Aluminum Alloys to Carbon Fiber Composites With Friction Stir Welding
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Topics: Aluminum alloys, Carbon fibers, Composite materials, Friction, Joining, Welding, Aluminum, Polymers, Fibers, Metals
Proceedings Papers

A Hybrid Surface Processing Method Using Surface Alloying and Pulsed Laser Micro Melting on S7 Tool Steel

Justin D. Morrow, Qinghua Wang, Neil A. Duffie, Frank E. Pfefferkorn
Proc. ASME. MSEC2015, Volume 1: Processing, V001T02A017, June 8–12, 2015
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2015-9446
https://doi.org/10.1115/MSEC2015-9446
View Paper titled, A Hybrid Surface Processing Method Using Surface Alloying and Pulsed Laser Micro Melting on S7 Tool Steel
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Topics: Lasers, Melting, Tool steel, Boron, Polishing, Chemistry, Coatings, Density, Indium alloys, Liquid metals
Journal Articles

Analytical and Experimental Investigation of Thermocapillary Flow in Pulsed Laser Micropolishing

Chao Ma, Madhu Vadali, Xiaochun Li, Neil A. Duffie, Frank E. Pfefferkorn
Journal: Journal of Micro and Nano-Manufacturing
Publisher: ASME
Article Type: Research-Article
J. Micro Nano-Manuf. June 2014, 2(2): 021010.
Paper No: JMNM-13-1073
https://doi.org/10.1115/1.4027433
Published Online: April 28, 2014
View Article titled, Analytical and Experimental Investigation of Thermocapillary Flow in Pulsed Laser Micropolishing
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Topics: Displacement, Flow (Dynamics), Lasers, Polishing, Temperature, Heat transfer, Fluid dynamics
Journal Articles

Combined Temperature and Force Control for Robotic Friction Stir Welding

Axel Fehrenbacher, Christopher B. Smith, Neil A. Duffie, Nicola J. Ferrier, Frank E. Pfefferkorn, Michael R. Zinn
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research-Article
J. Manuf. Sci. Eng. April 2014, 136(2): 021007.
Paper No: MANU-12-1357
https://doi.org/10.1115/1.4025912
Published Online: January 15, 2014
View Article titled, Combined Temperature and Force Control for Robotic Friction Stir Welding
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Topics: Force control, Robotics, Temperature, Welding, Control equipment, Friction, Control systems
Journal Articles

Melt Pool Flow and Surface Evolution During Pulsed Laser Micro Polishing of Ti6Al4V

Chao Ma, Madhu Vadali, Neil A. Duffie, Frank E. Pfefferkorn, Xiaochun Li
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research-Article
J. Manuf. Sci. Eng. December 2013, 135(6): 061023.
Paper No: MANU-13-1141
https://doi.org/10.1115/1.4025819
Published Online: November 27, 2013
View Article titled, Melt Pool Flow and Surface Evolution During Pulsed Laser Micro Polishing of Ti6Al4V
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Topics: Flow (Dynamics), Lasers, Polishing, Temperature, Simulation, Fluid dynamics, Melting
Proceedings Papers

Melt Pool Flow and Surface Evolution During Pulsed Laser Micro Polishing of Ti6Al4V

Chao Ma, Madhu Vadali, Neil A. Duffie, Frank E. Pfefferkorn, Xiaochun Li
Proc. ASME. MSEC2013, Volume 1: Processing, V001T01A054, June 10–14, 2013
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2013-1117
https://doi.org/10.1115/MSEC2013-1117
View Paper titled, Melt Pool Flow and Surface Evolution During Pulsed Laser Micro Polishing of Ti6Al4V
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Topics: Flow (Dynamics), Lasers, Polishing, Fluid dynamics, Cross section (Physics), Finite element methods, Heat transfer, Optical images, Physics, Temperature
Proceedings Papers

Combined Temperature and Force Control for Robotic Friction Stir Welding

Axel Fehrenbacher, Christopher B. Smith, Neil A. Duffie, Nicola J. Ferrier, Frank E. Pfefferkorn, Michael R. Zinn
Proc. ASME. MSEC2013, Volume 2: Systems; Micro and Nano Technologies; Sustainable Manufacturing, V002T02A028, June 10–14, 2013
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2013-1161
https://doi.org/10.1115/MSEC2013-1161
View Paper titled, Combined Temperature and Force Control for Robotic Friction Stir Welding
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Topics: Force control, Friction, Robotics, Temperature, Welding, Control systems, Control equipment, Energy consumption, Geometry, Joining
Journal Articles

Effects of Pulse Duration on Laser Micro Polishing

Madhu Vadali, Chao Ma, Neil A. Duffie, Xiaochun Li, Frank E. Pfefferkorn
Journal: Journal of Micro and Nano-Manufacturing
Publisher: ASME
Article Type: Research-Article
J. Micro Nano-Manuf. March 2013, 1(1): 011006.
Paper No: JMNM-12-1064
https://doi.org/10.1115/1.4023756
Published Online: March 25, 2013
View Article titled, Effects of Pulse Duration on Laser Micro Polishing
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Journal Articles

Toward Automation of Friction Stir Welding Through Temperature Measurement and Closed-Loop Control

Axel Fehrenbacher, Neil A. Duffie, Nicola J. Ferrier, Frank E. Pfefferkorn, Michael R. Zinn
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. October 2011, 133(5): 051008.
https://doi.org/10.1115/1.4005034
Published Online: October 12, 2011
View Article titled, Toward Automation of Friction Stir Welding Through Temperature Measurement and Closed-Loop Control
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Topics: Control equipment, Friction, Temperature, Temperature measurement, Thermocouples, Welding, Aluminum, Temperature control, Welded joints, Data acquisition systems
Proceedings Papers

Pulsed Laser Micro Polishing: An Analytical Method for Predicting Surface Finish

Madhu Vadali, Chao Ma, Neil A. Duffie, Xiaochun Li, Frank E. Pfefferkorn
Proc. ASME. MSEC2011, ASME 2011 International Manufacturing Science and Engineering Conference, Volume 2, 409-417, June 13–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2011-50180
https://doi.org/10.1115/MSEC2011-50180
View Paper titled, Pulsed Laser Micro Polishing: An Analytical Method for Predicting Surface Finish
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Topics: Finishes, Lasers, Polishing
Proceedings Papers

Pulsed Laser Micro Polishing of Microfabricated Nickel and Ti6Al4V Samples

Tyler L. Perry, Dirk Werschmoeller, Xiaochun Li, Frank E. Pfefferkorn, Neil A. Duffie
Proc. ASME. MSEC2008, ASME 2008 International Manufacturing Science and Engineering Conference, Volume 2, 329-339, October 7–10, 2008
Publisher: American Society of Mechanical Engineers
Paper No: MSEC_ICM&P2008-72505
https://doi.org/10.1115/MSEC_ICMP2008-72505
View Paper titled, Pulsed Laser Micro Polishing of Microfabricated Nickel and Ti6Al4V Samples
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Topics: Lasers, Nickel, Polishing, Surface roughness, Fluid dynamics, Modeling, Nd-YAG lasers, Simulation results, Surface cracks, Titanium alloys
Journal Articles

The Effect of Laser Pulse Duration and Feed Rate on Pulsed Laser Polishing of Microfabricated Nickel Samples

Tyler L. Perry, Dirk Werschmoeller, Xiaochun Li, Frank E. Pfefferkorn, Neil A. Duffie
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. June 2009, 131(3): 031002.
https://doi.org/10.1115/1.3106033
Published Online: April 15, 2009
View Article titled, The Effect of Laser Pulse Duration and Feed Rate on Pulsed Laser Polishing of Microfabricated Nickel Samples
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Topics: Lasers, Nickel, Polishing, Surface roughness
Proceedings Papers

Micromelting for Laser Micro Polishing of Meso/Micro Metallic Components

Tyler L. Perry, Dirk Werschmoeller, Xiaochun Li, Frank E. Pfefferkorn, Neil A. Duffie
Proc. ASME. MSEC2007, ASME 2007 International Manufacturing Science and Engineering Conference, 363-369, October 15–18, 2007
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2007-31173
https://doi.org/10.1115/MSEC2007-31173
View Paper titled, Micromelting for Laser Micro Polishing of Meso/Micro Metallic Components
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Topics: Lasers, Polishing, Surface roughness, Electroplating, Microfabrication, Micromanufacturing, Nd-YAG lasers, Nickel, Shapes, Silicon
Journal Articles

Examination of Selective Pulsed Laser Micropolishing on Microfabricated Nickel Samples Using Spatial Frequency Analysis

Tyler L. Perry, Dirk Werschmoeller, Neil A. Duffie, Xiaochun Li, Frank E. Pfefferkorn
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. April 2009, 131(2): 021002.
https://doi.org/10.1115/1.3075874
Published Online: February 24, 2009
View Article titled, Examination of Selective Pulsed Laser Micropolishing on Microfabricated Nickel Samples Using Spatial Frequency Analysis
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Topics: Lasers, Nickel, Polishing, Surface roughness, Melting, Ablation (Vaporization technology)