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Hyun-Ung Oh
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Journal Articles

Validation of the Critical Strain-Based Methodology for Evaluating the Mechanical Safety of Ball Grid Array Solder Joints in a Launch Random Vibration Environment

Tae-Yong Park, Hyun-Ung Oh
Journal: Journal of Electronic Packaging
Article Type: Research-Article
J. Electron. Packag. March 2022, 144(1): 011006.
Paper No: EP-20-1108
https://doi.org/10.1115/1.4050512
Published Online: August 6, 2021
View Article titled, Validation of the Critical Strain-Based Methodology for Evaluating the Mechanical Safety of Ball Grid Array Solder Joints in a Launch Random Vibration Environment
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Topics: Fatigue life, Random vibration, Safety, Solder joints, Ball-Grid-Array packaging
Journal Articles

Experimental Investigation of the Feasibility of Using a Liquid Metal as a Variable Conductance Radiator for Space Applications

Taegyu Kim, Hyun-Ung Oh
Journal: Journal of Heat Transfer
Article Type: Research-Article
J. Heat Transfer. January 2019, 141(1): 012002.
Paper No: HT-17-1774
https://doi.org/10.1115/1.4041558
Published Online: November 16, 2018
View Article titled, Experimental Investigation of the Feasibility of Using a Liquid Metal as a Variable Conductance Radiator for Space Applications
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Topics: Electrical conductance, Liquid metals, Heat, Reservoirs, Thermal conductivity, Temperature, Energy dissipation
Journal Articles

Semiactive Isolator With Liquid-Crystal Type ER Fluid for Momentum-Wheel Vibration Isolation

Hyun-Ung Oh, JSPS Post-doctoral researcher, Junjiro Onoda, Professor, Kenji Minesugi, Associate Professor
Journal: Journal of Vibration and Acoustics
Article Type: Technical Papers
J. Vib. Acoust. April 2004, 126(2): 272–277.
https://doi.org/10.1115/1.1646418
Published Online: May 4, 2004
View Article titled, Semiactive Isolator With Liquid-Crystal Type ER Fluid for Momentum-Wheel Vibration Isolation
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Topics: Computer simulation, Electrorheological fluids, Liquid crystals, Momentum, Vibration isolation, Wheels, Dynamic testing (Engineering)
Journal Articles

Characteristics of a Liquid-Crystal Type ER-Fluid Variable Damper for Semiactive Vibration Suppression

Hyun-Ung Oh, COE Researcher, Junjiro Onoda, Professor, Kenji Minesugi, Associate Professor
Journal: Journal of Vibration and Acoustics
Article Type: Technical Papers
J. Vib. Acoust. October 2000, 122(4): 412–419.
https://doi.org/10.1115/1.1287031
Published Online: April 1, 2000
View Article titled, Characteristics of a Liquid-Crystal Type ER-Fluid Variable Damper for Semiactive Vibration Suppression
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Topics: Dampers, Electrorheological fluids, Liquid crystals, Vibration suppression, Computer simulation