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Proceedings Papers

A Convolutional Neural Network (CNN) for Defect Detection of Additively Manufactured Parts

Mohammad Masud Parvez, Musarrat Farzana Rahman, Shaikat M. Galib, Frank Liou
Proc. ASME. IMECE2021, Volume 2A: Advanced Manufacturing, V02AT02A010, November 1–5, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2021-70500
https://doi.org/10.1115/IMECE2021-70500
View Paper titled, A Convolutional Neural Network (CNN) for Defect Detection of Additively Manufactured Parts
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Topics: Additive manufacturing, Artificial neural networks, Flaw detection, Porosity
Journal Articles

Multifeature-Fitting and Shape-Adaption Algorithm for Component Repair

Renwei Liu, Zhiyuan Wang, Frank Liou
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research-Article
J. Manuf. Sci. Eng. February 2018, 140(2): 021003.
Paper No: MANU-17-1105
https://doi.org/10.1115/1.4037107
Published Online: December 18, 2017
View Article titled, Multifeature-Fitting and Shape-Adaption Algorithm for Component Repair
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Topics: Algorithms, Cross section (Physics), Fittings, Fracture (Materials), Geometry, Shapes, Maintenance, Construction, Density
Proceedings Papers

Non Prismatic Air-Breathing Fuel Cells: Concept, Design and Manufacturing

Sriram Praneeth Isanaka, Fuewen Frank Liou, Joseph W. Newkirk
Proc. ASME. IDETC-CIE2015, Volume 2A: 41st Design Automation Conference, V02AT03A016, August 2–5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: DETC2015-46493
https://doi.org/10.1115/DETC2015-46493
View Paper titled, Non Prismatic Air-Breathing Fuel Cells: Concept, Design and Manufacturing
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Topics: Design, Fuel cells, Manufacturing, Flow (Dynamics), Weight (Mass), Engineering prototypes, Flat plates, Proton exchange membranes, Anodes, Cross section (Physics)
Proceedings Papers

Contrast of Repair Capabilities Between Laser Metal Deposition and TIG Welding on Ti-6Al-4V

Sreekar Karnati, Sai Aravind Palepu, Todd Sparks, Frank Liou, Cedo Nedic
Proc. ASME. IDETC-CIE2014, Volume 4: 19th Design for Manufacturing and the Life Cycle Conference; 8th International Conference on Micro- and Nanosystems, V004T06A010, August 17–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DETC2014-35524
https://doi.org/10.1115/DETC2014-35524
View Paper titled, Contrast of Repair Capabilities Between Laser Metal Deposition and TIG Welding on Ti-6Al-4V
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Topics: Gas tungsten arc welding, Lasers, Maintenance, Metals, Additive manufacturing, Aerospace industry, Testing, Alloys, Deformation, Grain size
Proceedings Papers

Study of Ultrasonic Vibration Laser Metal Deposition Process

Xueyong Chen, Todd Sparks, Jianzhong Ruan, Frank Liou
Proc. ASME. ISFA2012, ASME/ISCIE 2012 International Symposium on Flexible Automation, 445-450, June 18–20, 2012
Publisher: American Society of Mechanical Engineers
Paper No: ISFA2012-7124
https://doi.org/10.1115/ISFA2012-7124
View Paper titled, Study of Ultrasonic Vibration Laser Metal Deposition Process
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Topics: Lasers, Metals, Vibration, Experimental design, Microhardness, Oscillating frequencies, Stainless steel, Vibration equipment
Proceedings Papers

2-D Path Planning for Direct Laser Deposition Process

Swathi Routhu, Divya Kanakanala, Jianzhong Ruan, Xiaoqing Frank Liu, Frank Liou
Proc. ASME. IDETC-CIE2010, Volume 1: 36th Design Automation Conference, Parts A and B, 415-423, August 15–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: DETC2010-28440
https://doi.org/10.1115/DETC2010-28440
View Paper titled, 2-D Path Planning for Direct Laser Deposition Process
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Topics: Lasers, Path planning, Metals, Machining
Proceedings Papers

A Multi-Axis Slicing Method for Direct Laser Deposition Process

Divya Kanakanala, Swathi Routhu, Jianzhong Ruan, Xiaoqing Frank Liu, Frank Liou
Proc. ASME. IDETC-CIE2010, Volume 1: 36th Design Automation Conference, Parts A and B, 425-432, August 15–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: DETC2010-28442
https://doi.org/10.1115/DETC2010-28442
View Paper titled, A Multi-Axis Slicing Method for Direct Laser Deposition Process
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Topics: Lasers, Metals, Geometry, Machining
Proceedings Papers

The Effect of Toolpath Intersection Angle in Metal Deposition

Jianzhong Ruan, Andrew Hayes, Todd E. Sparks, Frank Liou
Proc. ASME. IDETC-CIE2009, Volume 5: 35th Design Automation Conference, Parts A and B, 579-586, August 30–September 2, 2009
Publisher: American Society of Mechanical Engineers
Paper No: DETC2009-87335
https://doi.org/10.1115/DETC2009-87335
View Paper titled, The Effect of Toolpath Intersection Angle in Metal Deposition
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Topics: Metals
Proceedings Papers

Selection of Part Orientation for Multi-Axis Hybrid Manufacturing Process

Jianzhong Ruan, Jun Zhang, Frank Liou
Proc. ASME. IDETC-CIE2009, Volume 5: 35th Design Automation Conference, Parts A and B, 587-596, August 30–September 2, 2009
Publisher: American Society of Mechanical Engineers
Paper No: DETC2009-87370
https://doi.org/10.1115/DETC2009-87370
View Paper titled, Selection of Part Orientation for Multi-Axis Hybrid Manufacturing Process
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Topics: Manufacturing, Algorithms, Computation, Lasers
Journal Articles

Integrated Process Planning for a Multiaxis Hybrid Manufacturing System

Lan Ren, Todd Sparks, Jianzhong Ruan, Frank Liou
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. April 2010, 132(2): 021006.
https://doi.org/10.1115/1.4001122
Published Online: March 30, 2010
View Article titled, Integrated Process Planning for a Multiaxis Hybrid Manufacturing System
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Topics: Collisions (Physics), Computer-aided design, Machining, Manufacturing, Manufacturing systems, Production planning, Algorithms, Finishes, Lasers, Computer numerical control machine tools
Proceedings Papers

Direct 3D Layer Metal Deposition and Toolpath Generation

Jianzhong Ruan, Lie Tang, Todd E. Sparks, Robert G. Landers, Frank Liou
Proc. ASME. IDETC-CIE2008, Volume 1: 34th Design Automation Conference, Parts A and B, 597-603, August 3–6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: DETC2008-50062
https://doi.org/10.1115/DETC2008-50062
View Paper titled, Direct 3D Layer Metal Deposition and Toolpath Generation
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Topics: Metals, Machining, Manufacturing, Shapes, Construction, Geometry, Lasers, Rapid prototyping, Stereolithography
Proceedings Papers

Variable Powder Flow Rate Control in Laser Metal Deposition Processes

Lie Tang, Jianzhong Ruan, Robert G. Landers, Frank Liou
Proc. ASME. DSCC2008, ASME 2008 Dynamic Systems and Control Conference, Parts A and B, 95-102, October 20–22, 2008
Publisher: American Society of Mechanical Engineers
Paper No: DSCC2008-2112
https://doi.org/10.1115/DSCC2008-2112
View Paper titled, Variable Powder Flow Rate Control in Laser Metal Deposition Processes
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Topics: Flow (Dynamics), Lasers, Metals, Engines, Motors, Cladding systems (Building), Control equipment, Dynamic models, Kalman filters, Nozzles
Proceedings Papers

Adaptive Deposition Coverage Toolpath Planning for Metal Deposition Process

Lan Ren, Jianzhong Ruan, Kunnayut Eiamsa-ard, Frank Liou
Proc. ASME. IDETC-CIE2007, Volume 6: 33rd Design Automation Conference, Parts A and B, 413-419, September 4–7, 2007
Publisher: American Society of Mechanical Engineers
Paper No: DETC2007-34445
https://doi.org/10.1115/DETC2007-34445
View Paper titled, Adaptive Deposition Coverage Toolpath Planning for Metal Deposition Process
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Topics: Metals, Geometry, Manufacturing, Path planning, Reliability
Proceedings Papers

Numerical and Analytical Modeling of Laser Deposition With Preheating

Zhiqiang Fan, Jacquelyn K. Stroble, Jianzhong Ruan, Todd E. Sparks, Frank Liou
Proc. ASME. MSEC2007, ASME 2007 International Manufacturing Science and Engineering Conference, 37-51, October 15–18, 2007
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2007-31089
https://doi.org/10.1115/MSEC2007-31089
View Paper titled, Numerical and Analytical Modeling of Laser Deposition With Preheating
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Topics: Lasers, Modeling, Analytical methods, Computer simulation, Computer-aided design, Dynamics (Mechanics), Heat transfer, Laser materials, Manufacturing, Simulation
Proceedings Papers

Part Repairing Using a Hybrid Manufacturing System

Lan Ren, Kunnayut Eiamsa-ard, Jianzhong Ruan, Frank Liou
Proc. ASME. MSEC2007, ASME 2007 International Manufacturing Science and Engineering Conference, 1-8, October 15–18, 2007
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2007-31003
https://doi.org/10.1115/MSEC2007-31003
View Paper titled, Part Repairing Using a Hybrid Manufacturing System
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Topics: Maintenance, Manufacturing systems, Computer software, Reliability, Welding, Computer numerical control machine tools, Cutting, Lasers, Military systems
Journal Articles

Variable Powder Flow Rate Control in Laser Metal Deposition Processes

Lie Tang, Jianzhong Ruan, Robert G. Landers, Frank Liou
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. August 2008, 130(4): 041016.
https://doi.org/10.1115/1.2953074
Published Online: July 22, 2008
View Article titled, Variable Powder Flow Rate Control in Laser Metal Deposition Processes
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Topics: Flow (Dynamics), Lasers, Engines, Motors
Proceedings Papers

Numerical and Experimental Study of Shielding Gas Orientation Effects on Particle Stream Concentration Mode in Coaxial Laser Aided Material Deposition Process

Heng Pan, Yogesh D. Thakar, Frank Liou
Proc. ASME. IDETC-CIE2004, Volume 1: 30th Design Automation Conference, 21-27, September 28–October 2, 2004
Publisher: American Society of Mechanical Engineers
Paper No: DETC2004-57049
https://doi.org/10.1115/DETC2004-57049
View Paper titled, Numerical and Experimental Study of Shielding Gas Orientation Effects on Particle Stream Concentration Mode in Coaxial Laser Aided Material Deposition Process
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Topics: Lasers, Particulate matter, Nozzles, Computer simulation, Flow (Dynamics), Design, Gas flow, Modeling, Turbulence
Proceedings Papers

2-D Deposition Pattern and Strategy Study on Rapid Manufacturing

Jianzhong Ruan, Lan Ren, Todd E. Sparks, Frank Liou
Proc. ASME. IDETC-CIE2006, Volume 1: 32nd Design Automation Conference, Parts A and B, 967-973, September 10–13, 2006
Publisher: American Society of Mechanical Engineers
Paper No: DETC2006-99326
https://doi.org/10.1115/DETC2006-99326
View Paper titled, 2-D Deposition Pattern and Strategy Study on Rapid Manufacturing
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Topics: Geometry, Machining, Manufacturing, Metals, Shapes
Journal Articles

The Investigation of Gravity-Driven Metal Powder Flow in Coaxial Nozzle for Laser-Aided Direct Metal Deposition Process

Heng Pan, Todd Sparks, Yogesh D. Thakar, Frank Liou
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Technical Papers
J. Manuf. Sci. Eng. May 2006, 128(2): 541–553.
https://doi.org/10.1115/1.2162588
Published Online: September 18, 2005
View Article titled, The Investigation of Gravity-Driven Metal Powder Flow in Coaxial Nozzle for Laser-Aided Direct Metal Deposition Process
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Topics: Flow (Dynamics), Lasers, Nozzles, Particulate matter, Simulation, Turbulence, Metals, Gravity (Force)
Journal Articles

Dynamic Modeling of Powder Delivery Systems in Gravity-Fed Powder Feeders

Heng Pan, Robert G. Landers, Frank Liou
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Technical Papers
J. Manuf. Sci. Eng. February 2006, 128(1): 337–345.
https://doi.org/10.1115/1.2120778
Published Online: July 11, 2005
View Article titled, Dynamic Modeling of Powder Delivery Systems in Gravity-Fed Powder Feeders
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Topics: Collisions (Physics), Flow (Dynamics), Particulate matter, Simulation, Modeling, Delays, Gravity (Force)