Prof. Junhee Kim Profile

Prof. Junhee Kim

Assistant Professor at Dankook Univ

SPIE Involvement:

Author

Proceedings Article | 26 March 2012 Paper

Heterogeneous wireless sensor networks for computational partitioning of Markov parameter-based system identification

Jeff Bergman, Junhee Kim, Jerome Lynch

Proceedings Volume 8345, 83450N (2012) https://doi.org/10.1117/12.916055

KEYWORDS: Sensor networks, Sensors, Data modeling, System identification, Clocks, Energy efficiency, Matrices, Data transmission, Computing systems, Wireless communications

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Proceedings Article | 18 April 2011 Paper

Long-term assessment of an autonomous wireless structural health monitoring system at the new Carquinez Suspension Bridge

Masahiro Kurata, Junhee Kim, Yilan Zhang, Jerome Lynch, G. van der Linden, Vince Jacob, Ed Thometz, Pat Hipley, Li-Hong Sheng

Proceedings Volume 7983, 798312 (2011) https://doi.org/10.1117/12.880145

KEYWORDS: Bridges, Sensors, Sensor networks, Data communications, Data modeling, Databases, Wireless communications, Inspection, System identification, Telecommunications

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A dense network of sensors installed in a bridge can continuously generate response data from which the health and condition of the bridge can be analyzed. This approach to structural health monitoring the efforts associated with periodic bridge inspections and can provide timely insight to regions of the bridge suspected of degradation or damage. Nevertheless, the deployment of fine sensor grids on large-scale structures is not feasible using wired monitoring systems because of the rapidly increasing installation labor and costs required. Moreover, the enormous size of raw sensor data, if not translated into meaningful forms of information, can paralyze the bridge manager's decision making. This paper reports the development of a large-scale wireless structural monitoring system for long-span bridges; the system is entirely wireless which renders it low-cost and easy to install. Unlike central tethered data acquisition systems where data processing occurs in the central server, the distributed network of wireless sensors supports data processing. In-network data processing reduces raw data streams into actionable information of immediate value to the bridge manager. The proposed wireless monitoring system has been deployed on the New Carquinez Suspension Bridge in California. Current efforts on the bridge site include: 1) long-term assessment of a dense wireless sensor network; 2) implementation of a sustainable power management solution using solar power; 3) performance evaluation of an internet-enabled cyber-environment; 4) system identification of the bridge; and 5) the development of data mining tools. A hierarchical cyber-environment supports peer-to-peer communication between wireless sensors deployed on the bridge and allows for the connection between sensors and remote database systems via the internet. At the remote server, model calibration and damage detection analyses that employ a reduced-order finite element bridge model are implemented.

Proceedings Article | 14 April 2011 Paper

Monitoring of vehicle-bridge interaction using mobile and static wireless sensor networks

Junhee Kim, Jerome Lynch, Jong-Jae Lee, Chang-Geun Lee

Proceedings Volume 7981, 79811J (2011) https://doi.org/10.1117/12.880150

KEYWORDS: Bridges, Sensors, Ferroelectric polymers, Filtering (signal processing), Sensor networks, Roads, Electronic filtering, Structural health monitoring, Wireless communications, Data communications

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Proceedings Article | 9 April 2010 Paper

Behavior of full-scale concrete segmented pipelines under permanent ground displacements

Junhee Kim, Sean O'Connor, Srinivasa Nadukuru, Jerome Lynch, Radoslaw Michalowski, Russell Green, Mohammed Pour-Ghaz, W. Jason Weiss, Aaron Bradshaw

Proceedings Volume 7650, 76500U (2010) https://doi.org/10.1117/12.847735

KEYWORDS: Sensors, Earthquakes, Actuators, Epoxies, Data acquisition, Landslide (networking), Optical inspection, Soil science, Civil engineering, Inspection

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Proceedings Article | 8 April 2009 Paper

Experimental study on the behavior of segmented buried concrete pipelines subject to ground movements

Junhee Kim, Jerome Lynch, Radoslaw Michalowski, Russell Green, Mohammed Pour-Ghaz, W. Jason Weiss, Aaron Bradshaw

Proceedings Volume 7294, 729419 (2009) https://doi.org/10.1117/12.816001

KEYWORDS: Sensors, Actuators, Optical inspection, Fourier transforms, Soil science, Data acquisition, Civil engineering, Transducers, Earthquakes, Epoxies

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Proceedings Article | 30 March 2009 Paper

Reconfigurable wireless monitoring systems for bridges: validation on the Yeondae Bridge

Junhee Kim, Jerome Lynch, Daniele Zonta, Jong-Jae Lee, Chung-Bang Yun

Proceedings Volume 7292, 72920T (2009) https://doi.org/10.1117/12.816007

KEYWORDS: Bridges, Sensors, Data communications, Modal analysis, Structural monitoring, Roads, Data acquisition, Wireless communications, Inspection, Telecommunications

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Proceedings Article | 8 April 2008 Paper

Piezoelectric polymeric thin films tuned by carbon nanotube fillers

Junhee Kim, Kenneth Loh, Jerome Lynch

Proceedings Volume 6932, 693232 (2008) https://doi.org/10.1117/12.774256

KEYWORDS: Composites, Ferroelectric polymers, Dielectric polarization, Dielectrics, Crystals, Polymers, Thin films, Polymer thin films, Scanning electron microscopy, Single walled carbon nanotubes

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Showing 5 of 7 publications

Conference Committee Involvement (3)

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

26 March 2017 | Portland, Oregon, United States

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

21 March 2016 | Las Vegas, Nevada, United States

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

9 March 2015 | San Diego, California, United States

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