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Journal Articles

A Foil-Based Additive Manufacturing Technology for Metal Parts

Chen Chen, Yiyu Shen, Hai-Lung Tsai
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Technical Briefs
J. Manuf. Sci. Eng. February 2017, 139(2): 024501.
Paper No: MANU-16-1188
https://doi.org/10.1115/1.4034139
Published Online: August 24, 2016
View Article titled, A Foil-Based Additive Manufacturing Technology for Metal Parts
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Topics: Additive manufacturing, Lasers, Metals, Welding, Cutting, Manufacturing, Laser cutting
Proceedings Papers

Energy Transport and Thermal Stress Formation in Hybrid Laser-MIG Welding

Jun Zhou, Amir Khalilollahi, Hai-Lung Tsai
Proc. ASME. IMECE2013, Volume 8C: Heat Transfer and Thermal Engineering, V08CT09A076, November 15–21, 2013
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-64503
https://doi.org/10.1115/IMECE2013-64503
View Paper titled, Energy Transport and Thermal Stress Formation in Hybrid Laser-MIG Welding
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Topics: Lasers, Thermal stresses, Welding, Welded joints, Heat, Laser welding, Mass transfer, Stress, Compressive stress, Heat transfer
Proceedings Papers

Melt Flow and Mass Transfer in Hybrid Laser-GMA Welding of 304 Stainless Steels

Jun Zhou, Hai-Lung Tsai
Proc. ASME. FEDSM2013, Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives, V01CT27A001, July 7–11, 2013
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2013-16158
https://doi.org/10.1115/FEDSM2013-16158
View Paper titled, Melt Flow and Mass Transfer in Hybrid Laser-GMA Welding of 304 Stainless Steels
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Topics: Flow (Dynamics), Lasers, Mass transfer, Stainless steel, Welding, Cracking (Materials), Fracture (Process), Laser welding, Arc welding, Filler metals
Proceedings Papers

Effects of Using an External Electromagnetic Force on Transport Phenomena and Weld Quality in Laser Welding

Jun Zhou, Hai-Lung Tsai
Proc. ASME. HT2012, Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and Mass Transfer in Biotechnology; Environmental Heat Transfer; Visualization of Heat Transfer; Education and Future Directions in Heat Transfer, 937-942, July 8–12, 2012
Publisher: American Society of Mechanical Engineers
Paper No: HT2012-58256
https://doi.org/10.1115/HT2012-58256
View Paper titled, Effects of Using an External Electromagnetic Force on Transport Phenomena and Weld Quality in Laser Welding
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Topics: Electromagnetic force, Laser welding, Transport phenomena, Cooling, Porosity, Dynamics (Mechanics), Filler metals, Flow (Dynamics), Heat, Heat transfer
Proceedings Papers

Effect of Interlayer Between Semiconductors on Interfacial Thermal Transport

Zhi Liang, Hai-Lung Tsai
Proc. ASME. MNHMT2012, ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer, 335-344, March 3–6, 2012
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2012-75273
https://doi.org/10.1115/MNHMT2012-75273
View Paper titled, Effect of Interlayer Between Semiconductors on Interfacial Thermal Transport
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Topics: Crystal structure, Density, Gallium arsenide, Interfacial thermal resistance, Modeling, Molecular dynamics, Phonons, Semiconductor devices, Semiconductors (Materials), Solids
Proceedings Papers

Investigation of Fluid Flow and Heat Transfer in 3D Dual-Beam Laser Keyhole Welding

Jun Zhou, Hai-Lung Tsai
Proc. ASME. MSEC2010, ASME 2010 International Manufacturing Science and Engineering Conference, Volume 2, 247-254, October 12–15, 2010
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2010-34252
https://doi.org/10.1115/MSEC2010-34252
View Paper titled, Investigation of Fluid Flow and Heat Transfer in 3D Dual-Beam Laser Keyhole Welding
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Topics: Fluid dynamics, Heat transfer, Lasers, Welding, Flow (Dynamics), Laser welding, Shapes, Cooling, Dynamics (Mechanics), Errors
Proceedings Papers

Ab Initio Calculations of Vibrational Energy Levels and Transition Dipole Moments of CO 2 Molecules

Zhi Liang, Hai-Lung Tsai
Proc. ASME. IMECE2008, Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C, 1697-1704, October 31–November 6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2008-67765
https://doi.org/10.1115/IMECE2008-67765
View Paper titled, Ab Initio Calculations of Vibrational Energy Levels and Transition Dipole Moments of CO 2 Molecules
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Topics: Carbon dioxide, Dipole moments, Energy levels (Quantum mechanics), Lasers, Wave functions, Waves, Absorption, Chemical reactions, Eigenfunctions, Eigenvalues
Proceedings Papers

Ab Initio Calculations of Infrared Absorption Cross Sections of CO 2 Gas

Zhi Liang, Hai-Lung Tsai
Proc. ASME. IMECE2008, Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C, 1715-1721, October 31–November 6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2008-67776
https://doi.org/10.1115/IMECE2008-67776
View Paper titled, Ab Initio Calculations of Infrared Absorption Cross Sections of CO 2 Gas
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Topics: Absorption, Carbon dioxide, Cross section (Physics), Dipole moments, Absorption spectra, Eigenvalues, Lasers, Potential energy, Pressure, Shapes
Proceedings Papers

Temperature-Insensitive Miniaturized Fiber Inline Fabry-Perot Interferometer Fabricated by Femtosecond Laser

Yukun Han, Cheng-Hsiang Lin, Hai-Lung Tsai, Tao Wei, Hai Xiao
Proc. ASME. IMECE2008, Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C, 1735-1740, October 31–November 6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2008-67871
https://doi.org/10.1115/IMECE2008-67871
View Paper titled, Temperature-Insensitive Miniaturized Fiber Inline Fabry-Perot Interferometer Fabricated by Femtosecond Laser
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Topics: Fibers, Interferometers, Lasers, Temperature, Refractive index, Water, Cavities, Methanol, Micromachining, Temperature effects
Proceedings Papers

Femtosecond Laser-Induced Silicon Surface Morphology in Water

Yukun Han, Cheng-Hsiang Lin, Hai-Lung Tsai
Proc. ASME. IMECE2008, Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C, 1741-1744, October 31–November 6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2008-67923
https://doi.org/10.1115/IMECE2008-67923
View Paper titled, Femtosecond Laser-Induced Silicon Surface Morphology in Water
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Topics: Lasers, Silicon, Water, Semiconductor wafers, Irradiation (Radiation exposure), Micromachining, Periodic structures, Surface quality, Surface roughness
Proceedings Papers

Investigation of Transport Phenomena in Three-Dimensional Gas Metal Arc Welding of Thick Metals

Jun Zhou, Mohammad S. Davoud, Hai-Lung Tsai
Proc. ASME. HT2007, ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 3, 175-182, July 8–12, 2007
Publisher: American Society of Mechanical Engineers
Paper No: HT2007-32686
https://doi.org/10.1115/HT2007-32686
View Paper titled, Investigation of Transport Phenomena in Three-Dimensional Gas Metal Arc Welding of Thick Metals
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Topics: Gas metal arc welding, Metals, Transport phenomena, Flow (Dynamics), Arc welding, Base metals, Drops, Shapes, Temperature, Transients (Dynamics)
Proceedings Papers

A Combined Model and Its Verification for Femtosecond-Pulse Materials Interactions

Lan Jiang, Hai-Lung Tsai
Proc. ASME. MICRONANO2008, 2008 Second International Conference on Integration and Commercialization of Micro and Nanosystems, 609-614, June 3–5, 2008
Publisher: American Society of Mechanical Engineers
Paper No: MicroNano2008-70127
https://doi.org/10.1115/MicroNano2008-70127
View Paper titled, A Combined Model and Its Verification for Femtosecond-Pulse Materials Interactions
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Topics: Damage, Equilibrium (Physics), Heat, Laser materials, Metals, Modeling, Nanoscale phenomena, Plasmas (Ionized gases), Shapes, Temperature
Proceedings Papers

Determination of Laser Absorption Coefficients of Gas Mixtures Using an Ab Initio MD Model

Zhi Liang, Hai-Lung Tsai, Lan Jiang
Proc. ASME. IMECE2007, Volume 8: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A and B, 1013-1019, November 11–15, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2007-41449
https://doi.org/10.1115/IMECE2007-41449
View Paper titled, Determination of Laser Absorption Coefficients of Gas Mixtures Using an Ab Initio MD Model
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Topics: Absorption, Lasers, Carbon dioxide, Coating processes, Coatings, Diamonds, Molecular dynamics, Plasma arc welding, Potential energy, Shapes
Proceedings Papers

Femtosecond Laser One-Step Microfabrication of Optical Fiber Inline Square Resonators for Chemical Sensing

Yukun Han, Songping Wu, Bala P. B. Chitturi, Hai-Lung Tsai, Tao Wei, John Montoya, Hai Xiao
Proc. ASME. IMECE2007, Volume 8: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A and B, 1021-1024, November 11–15, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2007-41871
https://doi.org/10.1115/IMECE2007-41871
View Paper titled, Femtosecond Laser One-Step Microfabrication of Optical Fiber Inline Square Resonators for Chemical Sensing
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Topics: Lasers, Microfabrication, Optical fiber, Annealing, Chemical etching, Machining, Surface roughness
Proceedings Papers

Materials Removals During Femtosecond Laser Non-Thermal Ablation of Dielectrics

Lan Jiang, Hai-Lung Tsai
Proc. ASME. IMECE2006, Heat Transfer, Volume 2, 661-669, November 5–10, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2006-15624
https://doi.org/10.1115/IMECE2006-15624
View Paper titled, Materials Removals During Femtosecond Laser Non-Thermal Ablation of Dielectrics
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Topics: Ablation (Vaporization technology), Dielectric materials, Lasers, Plasmas (Ionized gases), Laser ablation, Shapes, Density, Electrons, Fluence (Radiation measurement), Temperature
Proceedings Papers

Modeling of CO2 Gas Excitation Under CO2 Laser Irradiation

Lan Jiang, Hai-Lung Tsai
Proc. ASME. IMECE2006, Heat Transfer, Volume 2, 671-677, November 5–10, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2006-15625
https://doi.org/10.1115/IMECE2006-15625
View Paper titled, Modeling of CO2 Gas Excitation Under CO2 Laser Irradiation
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Topics: Carbon dioxide, Carbon dioxide lasers, Excitation, Irradiation (Radiation exposure), Modeling, Absorption, Lasers, Coating processes, Equilibrium (Physics), Laser beams
Journal Articles

Porosity Formation and Prevention in Pulsed Laser Welding

Jun Zhou, Hai-Lung Tsai
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. August 2007, 129(8): 1014–1024.
https://doi.org/10.1115/1.2724846
Published Online: September 5, 2006
View Article titled, Porosity Formation and Prevention in Pulsed Laser Welding
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Topics: Laser welding, Lasers, Liquid metals, Metals, Porosity, Solidification, Collapse, Temperature
Journal Articles

Energy Transport and Nanostructuring of Dielectrics by Femtosecond Laser Pulse Trains

Lan Jiang, Hai-Lung Tsai
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. September 2006, 128(9): 926–933.
https://doi.org/10.1115/1.2241979
Published Online: May 2, 2006
View Article titled, Energy Transport and Nanostructuring of Dielectrics by Femtosecond Laser Pulse Trains
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Topics: Ablation (Vaporization technology), Dielectric materials, Electrons, Fluence (Radiation measurement), Lasers, Separation (Technology), Trains, Reflectance, Density, Ionization
Journal Articles

Transport Phenomena and Keyhole Dynamics during Pulsed Laser Welding

Jun Zhou, Hai-Lung Tsai, Pei-Chung Wang
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. July 2006, 128(7): 680–690.
https://doi.org/10.1115/1.2194043
Published Online: December 7, 2005
View Article titled, Transport Phenomena and Keyhole Dynamics during Pulsed Laser Welding
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Topics: Dynamics (Mechanics), Flow (Dynamics), Fluid dynamics, Laser welding, Lasers, Metals, Plasmas (Ionized gases), Pressure, Temperature, Absorption
Journal Articles

Improved Two-Temperature Model and Its Application in Ultrashort Laser Heating of Metal Films

Lan Jiang, Hai-Lung Tsai
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. October 2005, 127(10): 1167–1173.
https://doi.org/10.1115/1.2035113
Published Online: June 7, 2005
View Article titled, Improved Two-Temperature Model and Its Application in Ultrashort Laser Heating of Metal Films
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Topics: Electrons, Heat capacity, Lasers, Metals, Relaxation (Physics), Temperature, Thermal conductivity, Phonons, Reflectance, Absorption