Works (39)

Updated: July 5th, 2023 16:03

2019 journal article

Experimental investigation of water spray injection in liquid piston for near-isothermal compression

APPLIED ENERGY, 259.

By: V. Patil n, P. Acharya n & P. Ro n

author keywords: Isothermal compression; Liquid piston; Heat transfer enhancement; Spray injection; Compression efficiency
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: January 27, 2020

2019 journal article

Experimental study of heat transfer enhancement in liquid piston compressor using aqueous foam

APPLIED THERMAL ENGINEERING, 164.

By: V. Patil n & P. Ro*

author keywords: Liquid piston; Isothermal compression; Heat transfer enhancement; Aqueous foam; Compression efficiency
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: December 16, 2019

2018 journal article

Experimental investigation of heat transfer in liquid piston compressor

APPLIED THERMAL ENGINEERING, 146, 169–179.

By: V. Patil n, P. Acharya n & P. Ro n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: NC State University Libraries
Added: January 14, 2019

2017 journal article

Analysis of a Novel Technique for Temperature Rise Abatement in Liquid Piston Compressors-External Gas Injection

JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS, 9(2).

By: H. Bhaskaran n, P. Ro n, J. Park n & K. Ramakrishnan n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2017 conference paper

Comparative assessment of different types of ocean compressed air energy storage systems based on exergy analysis

Proceedings of the ASME Power Conference Joint with ICOPE-17, 2017, vol 2.

By: V. Patil n & P. Ro n

Source: NC State University Libraries
Added: August 6, 2018

2016 article

End-To-End Efficiency of Liquid Piston based Ocean Compressed Air Energy Storage

OCEANS 2016 MTS/IEEE MONTEREY.

By: V. Patil n, P. Ro n & K. Ranganath n

author keywords: Ocean Energy; Energy Storage; Compressed Air; End-to-End Efficiency
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2016 article

Temperature Abatement Using Hollow Spheres in Liquid Piston Compressor for Ocean Compressed Air Energy Storage System

OCEANS 2016 MTS/IEEE MONTEREY.

By: K. Ramakrishnan n, P. Ro n & V. Patil n

author keywords: Ocean energy; Energy storage; Liquid Piston compressor; Temperature abatement
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2015 journal article

Forced Convection Cooling of Low-Power Handheld Devices Using a Vibrating Cantilever Beam

JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS, 7(2).

By: J. Kim* & P. Ro n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Analysis, Fabrication, and Testing of a Liquid Piston Compressor Prototype for an Ocean Compressed Air Energy Storage (OCAES) System

Marine Technology Society Journal, 48(6), 86–97.

By: J. Park*, P. Ro*, X. He & A. Mazzoleni*

author keywords: ocean-based energy; compressed air; energy storage; liquid piston; isothermal
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Feasibility Study on Thermoacoustic Cooling for Low-Power Handheld Electronic Devices

JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS, 7(2).

By: J. Kim* & P. Ro n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Conceptual Design of Ocean Compressed Air Energy Storage System

MARINE TECHNOLOGY SOCIETY JOURNAL, 47(2), 70–81.

By: S. Lim*, A. Mazzoleni*, J. Park*, P. Ro* & B. Quinlan*

author keywords: energy storage; CAES; compressed air energy storage; adiabatic CAES
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Noncontact Manipulation of Light Objects Based on Parameter Modulations of Acoustic Pressure Nodes

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME, 135(3).

By: J. Park* & P. Ro n

author keywords: standing wave acoustic levitation; noncontact manipulation; parameter modulations; acoustic radiation pressure; ultrasound
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2012 conference paper

Analysis and optimization of a quasi-isothermal compression and expansion cycle for Ocean Compressed Air Energy Storage (OCAES)

2012 Oceans.

By: J. Park n, P. Ro n, S. Lim n, A. Mazzoleni n & B. Quinlan n

Source: NC State University Libraries
Added: August 6, 2018

2012 conference paper

Conceptual design of ocean compressed air energy storage system

2012 Oceans.

By: S. Lim n, A. Mazzoleni n, J. Park n, P. Ro n & B. Quinlan n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

Measuring True Young's Modulus of a Cantilevered Nanowire: Effect of Clamping on Resonance Frequency

Small, 8(16), 2571–2576.

By: Q. Qin n, F. Xu n, Y. Cao n, P. Ro n & Y. Zhu n

TL;DR: This work exemplifies the importance of considering the effect of clamping in measurements of Young's modulus using the resonance method, and demonstrates that the true Young'smodulus can be measured if the critical clamp size is reached. (via Semantic Scholar)
Sources: Crossref, Web Of Science
Added: August 6, 2018

2009 journal article

Study on a ultra-light dual revolute manipulator with high joint torque

INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING, 10(4), 49–56.

By: H. Choi*, T. Kim*, W. Moon* & P. Ro n

author keywords: Ultra light robot arm; Closed chain mechanism; Microprocessor; FEM; Control system
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Modeling and control of a magnetostrictive tool servo system

JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME, 130(3).

By: W. Panusittikorn n & P. Ro n

Source: Web Of Science
Added: August 6, 2018

2005 journal article

Forced convective cooling via acoustic streaming in a narrow channel established by a vibrating piezoelectric bimorph

FLOW TURBULENCE AND COMBUSTION, 74(2), 195–206.

By: Q. Wan n, T. Wu n, J. Chastain n, W. Roberts n, A. Kuznetsov n & P. Ro n

author keywords: acoustic streaming; forced convection; cooling enhancement; vibrating surface
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Magnetic servo levitation by sliding-mode control of nonaffine systems with algebraic input invertibility

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 52(5), 1449–1455.

By: H. Gutierrez* & P. Ro n

author keywords: equivalent control; fast-tool servo system; input feedback linearization; magnetic servo levitation; nonaffine nonlinear systems; sliding-mode control
TL;DR: A nonlinear controller design technique for MSL that has inherent robustness to both parametric uncertainties and unmodeled dynamics is described, and can achieve excellent tracking at high speeds in a fast-tool servo system actuated by MSL. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Heat transfer performance of a cooling system using vibrating piezoelectric beams

JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 15(1), 213–220.

By: T. Wu n & P. Ro n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Modeling and sliding-mode control of friction-based object transport using two-mode ultrasonic excitation

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 51(4), 917–926.

By: W. Panusittikorn n, M. Lee* & P. Ro n

author keywords: friction; sliding-mode control; ultrasonic motors; vibration
TL;DR: This paper introduces a magnetic-free object transport system driven by a friction force on an ultrasonic flexural vibrating beam that offers unique advantages of silent operation and lubricant-free structure. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Dynamic peak amplitude analysis and bonding layer eiiects of piezoelectric bimorph cantilevers

SMART MATERIALS AND STRUCTURES, 13(1), 203–210.

By: T. Wu* & P. Ro*

Source: Web Of Science
Added: August 6, 2018

2003 journal article

Piezoelectric resonating structures for microelectronic cooling

Smart Materials & Structures, 12(2), 181–187.

By: T. Wu n, P. Ro n, A. Kingon n & J. Mulling n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Acoustic streaming induced by ultrasonic flexural vibrations and associated enhancement of convective heat transfer

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 111(2), 875–883.

By: B. Loh n, S. Hyun n, P. Ro n & C. Kleinstreuer n

MeSH headings : Acoustics; Hot Temperature; Models, Theoretical; Ultrasonics; Vibration
TL;DR: Acoustic streaming induced by ultrasonic flexural vibrations and the associated convection enhancement are investigated and it is observed that the streaming velocity decreases with the excitation frequency, and with an open-ended channel, a substantial increase in streaming velocity is observed from CFD simulations. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2002 journal article

An accurate full car ride model using model reducing techniques

JOURNAL OF MECHANICAL DESIGN, 124(4), 697–705.

By: C. Kim* & P. Ro n

UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2001 article

Feasibility of using ultrasonic flexural waves as a cooling mechanism

Ro, P. I., & Loh, B. G. (2001, February). IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, Vol. 48, pp. 143–150.

By: P. Ro & B. Loh n

author keywords: acoustic streaming; heat transfer; ultrasonic flexural waves
TL;DR: The UFW-based fan offers advantages over the conventional fan, such as silent operation, minimal heat dissipation, lack of wearing parts, and slim profile, which makes the fan an ideal candidate for cooling miniature parts in an enclosed workspace. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

An object transport system using flexural ultrasonic progressive waves generated by two-mode excitation

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 47(4), 994–999.

By: B. Loh & P. Ro n

TL;DR: Tests indicate that not only the phase difference but also the excitation frequency were the dominant factors in determining the transport speed and direction of an object transport system using low amplitude and high frequency progressive waves generated by two-mode excitation. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2000 personal communication

Changing the propagation direction of flexural ultrasonic progressive waves by modulating excitation frequency

Loh, B. G., & Ro, P. I. (2000, November 16).

By: B. Loh n & P. Ro n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Feasibility of contact and non-contact approaches to material handling using traveling waves and transition characteristics

IEEE Transactions on Industrial Electronics, 47(6), 1134–1135.

By: P. Ro & B. Loh

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Reduced order modeling and parameter estimation for quarter car suspension system

Journal of Automobile Engineering, 214(D), 851–864.

By: P. Ro n

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Reduced-order modelling and parameter estimation for a quarter-car suspension system

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 214(D8), 851–864.

By: C. Kim n & P. Ro n

author keywords: reduced-order model; quarter-car suspension; identification; equivalent parameters
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Robust friction compensation for submicrometer positioning and tracking for a ball-screw-driven slide system

PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY, 24(2), 160–173.

By: P. Ro n, W. Shim n & S. Jeong*

author keywords: friction compensation; submicrometer; disturbance observer; ball-screw
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 journal article

The law of large numbers for fuzzy numbers with unbounded supports

FUZZY SETS AND SYSTEMS, 116(2), 269–274.

By: D. Hong* & P. Ro n

author keywords: fuzzy numbers; t-norm; law of large numbers
TL;DR: This work studies laws of large numbers for mutually T-related fuzzy numbers with unbounded supports where T is an Archimedean t-norm and generalizes earlier result of Badard. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1999 journal article

Effect of the suspension structure on equivalent suspension parameters

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 213(D5), 457–470.

By: C. Kim n, P. Ro n & H. Kim

author keywords: active suspension; uncertainty; parameter identification; sliding mode
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1998 journal article

A sliding mode controller for vehicle active suspension systems with non-linearities

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 212(D2), 79–92.

By: C. Kim n & P. Ro n

author keywords: sliding mode; active suspension; non-linearities
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Nonlinear optimization-based motion planning of nonholonomic systems using an iterative algorithm

Intelligent Automation and Soft Computing, 4(3), 227–239.

By: C. Yih & P. Ro*

TL;DR: An iterative algorithm is proposed to solve for a feasible path satisfying nonholonomic constraints and necessary optimality conditions and Modified Newton's method with line search is used to ensure the global convergence of the numerical algorithm. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Parametric modeling and control of a long-range actuator using magnetic servo levitation

IEEE TRANSACTIONS ON MAGNETICS, 34(5), 3689–3695.

By: H. Gutierrez n & P. Ro n

author keywords: feedback linearization; magnetic servo levitation; parametric modeling
TL;DR: A feedback-linearized controller coupled with a Kalman filter is presented as a first approach to solve the tracking problem for an actuator based on magnetic servo levitation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Sliding-mode control of a nonlinear-input system: Application to a magnetically levitated fast-tool servo

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 45(6), 921–927.

By: H. Gutierrez n & P. Po

author keywords: fast-tool servo systems; magnetic servo levitation; nonaffine systems; sliding-mode control
TL;DR: Experimental results demonstrate the feasibility of achieving long-range fast tracking with magnetically levitated devices by using sliding-mode control, and a sliding mode-based controller is discussed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1994 journal article

Path finding and grasp planning for robotic assembly

Robotica, 12(4), 353–360.

By: B. Lee n & P. Ro*

author keywords: PARTS MODELING; ASSEMBLY PATH PLANNING; ROBOTIC ASSEMBLY; ROBOTIC GRASP PLANNING
TL;DR: A simple and efficient algorithm to find the assembly path of the male part is developed, in which any path between the shortest and safest paths can be easily found by just changing the clearance gap between the male and female parts. (via Semantic Scholar)
Source: Crossref
Added: August 28, 2020

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