Dr. JinHyeong Yoo Profile

Dr. JinHyeong Yoo

Research Scientist at Naval Surface Warfare Ctr

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Publications (19)

Proceedings Article | 22 March 2021 Presentation + Paper

Experimental study on dynamic load line for magnetostrictive actuator

Jin-Hyeong Yoo, Nicholas Jones

Proceedings Volume 11591, 115911H (2021) https://doi.org/10.1117/12.2585005

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Proceedings Article | 27 March 2019 Paper

Performance of a water level sensor using magnetostrictive materials

JinHyeong Yoo, Nicholas Jones, Kyle Flynn, Rachel Jacobs

Proceedings Volume 10970, 109700K (2019) https://doi.org/10.1117/12.2514282

KEYWORDS: Sensors, Magnetic sensors, Magnetostrictive materials, Temperature metrology, Environmental sensing, Oscilloscopes, Iron

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Proceedings Article | 22 March 2018 Presentation + Paper

Performance prediction for a magnetostrictive actuator using a simplified model

Jin-Hyeong Yoo, Nicholas Jones

Proceedings Volume 10596, 105961G (2018) https://doi.org/10.1117/12.2297039

KEYWORDS: Magnetism, Magnetostrictive materials, Performance modeling, Actuators, Magnetic sensors, Sensors, Solids

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Proceedings Article | 12 April 2017 Presentation + Paper

Improved equivalent circuit modeling and simulation of magnetostrictive tuning fork gyro sensors

U. Marschner, E. Starke, J.-H. Yoo, A. B. Flatau

Proceedings Volume 10168, 101681F (2017) https://doi.org/10.1117/12.2263973

KEYWORDS: Sensors, Gyroscopes, Magnetic sensors, Magnetism, Device simulation, Modeling and simulation, Waveguides, Transducers, Radium, Systems modeling, Rubidium, Electromechanical design

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Proceedings Article | 3 June 2014 Paper

Validation and verification of a high-fidelity computational model for a bounding robot's parallel actuated elastic spine

Jason Pusey, Jin-Hyeong Yoo

Proceedings Volume 9084, 90840G (2014) https://doi.org/10.1117/12.2050416

KEYWORDS: Data modeling, Spine, Finite element methods, Composites, Motion models, Electromechanical design, Robotics, Protactinium, Neodymium, Solid modeling

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Proceedings Article | 1 April 2014 Paper

Evaluation of magnetostrictive shunt damper performance using Iron (Fe)-Gallium (Ga) alloy

JinHyeong Yoo, Andrew Murray, Alison Flatau

Proceedings Volume 9057, 90573I (2014) https://doi.org/10.1117/12.2049010

KEYWORDS: Capacitance, Magnetism, Resistance, Resistors, Magnetostrictive materials, Iron, Gallium, Transducers, Sensors, Actuators

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Proceedings Article | 28 May 2013 Paper

Performance of a bending mode energy harvester using Fe-Ga alloy (Galfenol)

Robert Haynes, Jin-Hyeong Yoo, Alison Flatau

Proceedings Volume 8728, 87280U (2013) https://doi.org/10.1117/12.2016424

KEYWORDS: Solar energy, Magnetism, Magnetostrictive materials, Aluminum, Energy harvesting, Resistance, Electromagnetism, Ions, Neodymium, Analytical research

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Proceedings Article | 10 April 2013 Paper

Simulation of adaptive semi-active magnetorheological seat damper for vehicle occupant blast protection

Jin-Hyeong Yoo, Muthuvel Murugan, Norman Wereley

Proceedings Volume 8688, 86881A (2013) https://doi.org/10.1117/12.2009227

KEYWORDS: Head, Injuries, Neck, Data modeling, Control systems, Tolerancing, Land mines, Performance modeling, Spine, Mathematical modeling

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Proceedings Article | 1 April 2010 Paper

Electromechanical network modeling applied to magnetoelastic gyro sensor design

U. Marschner, J.-H. Yoo, E. Starke, F. Graham, C. Mudivarthi, W.-J. Fischer, A. Flatau

Proceedings Volume 7647, 76472S (2010) https://doi.org/10.1117/12.847782

KEYWORDS: Sensors, Magnetism, Magnetic sensors, Gyroscopes, Transducers, Electromechanical design, Beam shaping, Velocity measurements, Optical simulations, Systems modeling

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Proceedings Article | 1 April 2010 Paper

Non-contact torque measurement using rolled single crystal-like Galfenol patches

D. Douglas, S.-M. Na, J.-H. Yoo, A. Flatau

Proceedings Volume 7647, 76470W (2010) https://doi.org/10.1117/12.851499

KEYWORDS: Sensors, Magnetic sensors, Magnetism, Crystals, Gallium, Distance measurement, Visible radiation, Aluminum, Aerospace engineering, Actuators

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Proceedings Article | 2 April 2008 Paper

Performance improvements in Galfenol laminated rods with stress annealing

Jin-Hyeong Yoo, James Restorff, Marilyn Wun-Fogle, Alison Flatau

Proceedings Volume 6929, 69291Y (2008) https://doi.org/10.1117/12.778339

KEYWORDS: Annealing, Magnetism, Magnetostrictive materials, Anisotropy, Rods, Solids, Transducers, Ceramics, Iron, Mechanical engineering

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The recent discovery of Galfenol as a "large" magnetostrictive material (as high as 400με) offers a particularly promising transducer material that combines largely desirable mechanical attributes with superior magnetic properties. The high permeability of this material makes it easy to magnetize, however it also causes a relatively low cutoff frequency in dynamic applications, above which eddy currents form and introduce significant power losses. To reduce the eddy current losses, magnetostrictive drivers used in dynamic applications are commonly laminated. A second transducer design consideration is that in materials which exhibit positive magnetostriction, it is common to impose an initial compressive "prestress" to the material that is sufficient to align the orientation of the magnetic moments within the material to a direction perpendicular to the stress axis. This is done to maximize the magnetostriction realized when a magnetic field applied along the stress axis rotates the moments parallel to the stress axis. An alternative to the application of a compressive prestress is to build-in a uniaxial magnetic anisotropy through stress annealing. Stress annealing is a high temperature process with simultaneous application of a compressive load and subsequent cooling under load in which the magnetic moment alignment developed at temperature is retained upon removal from the stress anneal fixture. The compressive load needed to build in a useful uniaxial magnetic anisotropy in Galfenol is greater than the buckling load for Galfenol laminae sized for use in high frequency dynamic applications. In this study, prior work on stress annealing of solid rods of single and polycrystalline samples of Galfenol is successfully extended to thin laminae of Galfenol by introducing fixtures needed to avoid buckling. The standard stress annealing device uses a hydraulic actuator to apply compressive stress to the sample. Two linear guides have been added to ensure a normal compression load path to reduce the potential for buckling of thin laminations. In addition, a mechanical holding fixture was used to maintain proper alignment of the thin laminations during stress annealing. Data are presented that demonstrate the magnetic uniaxial anisotropy developed by stress annealing of laminated Galfenol rods.

Proceedings Article | 17 May 2005 Paper

Preliminary Galfenol vibratory gyro-sensor design

Jin-Hyeong Yoo, Uwe Marschner, Alison Flatau

Proceedings Volume 5764, (2005) https://doi.org/10.1117/12.599973

KEYWORDS: Sensors, Gyroscopes, Magnetic sensors, Magnetostrictive materials, Servomechanisms, Magnetism, Silicon, Velocity measurements, Prototyping, Resonators

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Proceedings Article | 26 July 2004 Paper

Bidirectional control of a magnetorheological piezohydraulic actuator

Jin-Hyeong Yoo, Jayant Sirohi, Shaju John, Anirban Chaudhuri, Christopher Cadou, Norman Wereley

Proceedings Volume 5390, (2004) https://doi.org/10.1117/12.547577

KEYWORDS: Actuators, Performance modeling, Prototyping, Magnetism, Wheatstone bridges, Aerospace engineering, Quantum wells, Systems modeling, Picosecond phenomena, Lanthanum

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Proceedings Article | 21 July 2004 Paper

Measured iron-gallium alloy tensile properties under magnetic fields

Jin-Hyeong Yoo, Alison Flatau

Proceedings Volume 5387, (2004) https://doi.org/10.1117/12.547548

KEYWORDS: Gallium, Magnetism, Iron, Crystals, Anisotropy, Bone, Single crystal X-ray diffraction, Sensors, Acoustics, Solids

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Proceedings Article | 5 August 2003 Paper

A magnetorheological hydraulic actuator driven by a piezopump

Jin-Hyeong Yoo, Jayant Sirohi, Norman Wereley, Inderjit Chopra

Proceedings Volume 5056, (2003) https://doi.org/10.1117/12.483497

KEYWORDS: Actuators, Prototyping, Magnetism, Performance modeling, Wheatstone bridges, Aerospace engineering, Control systems, Power supplies, Head, Amplifiers

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Proceedings Article | 31 July 2003 Paper

Impact of varying concentrations of nanometer-sized particles in a bidisperse magnetorheological fluid

Julian Trihan, Jin-Hyeong Yoo, Norman Wereley, S. Kotha, A. Suggs, Radhakumar Radhakrishnan, T. Sudarshan, B. Love

Proceedings Volume 5052, (2003) https://doi.org/10.1117/12.483987

KEYWORDS: Microfluidics, Particles, Nanoparticles, Magnetism, Iron, Fluid dynamics, Solids, Laser scattering, Photodiodes, Data modeling

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Proceedings Article | 15 July 2002 Paper

Performance of a MR hydraulic power actuation system

Jin-Hyeong Yoo, Norman Wereley

Proceedings Volume 4701, (2002) https://doi.org/10.1117/12.474657

KEYWORDS: Actuators, Performance modeling, Magnetism, Wheatstone bridges, Picosecond phenomena, Tellurium, Aerospace engineering, Bridges, Prototyping, Lanthanum

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Proceedings Article | 11 July 2002 Paper

Magnetorheological fluids exploiting nanometer-sized particles

Shaju John, Jin-Hyeong Yoo, Norman Wereley, Radhakumar Radhakrishnan, T. Sudarshan

Proceedings Volume 4699, (2002) https://doi.org/10.1117/12.475004

KEYWORDS: Microfluidics, Particles, Magnetism, Fluid dynamics, Iron, Magnetorheological finishing, Protactinium, Data modeling, Microwave radiation, Plasma

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Proceedings Article | 16 August 2001 Paper

Design of a MR hydraulic power actuation system

Jin-Hyeong Yoo, Jayant Sirohi, Norman Wereley

Proceedings Volume 4327, (2001) https://doi.org/10.1117/12.436525

KEYWORDS: Magnetism, Actuators, Performance modeling, Bismuth, Finite element methods, Wheatstone bridges, Lanthanum, Systems modeling, Head, Protactinium

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Showing 5 of 19 publications

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