Dr. Changgil Lee Profile

Dr. Changgil Lee

at Sungkyunkwan Univ

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Author

Publications (11)

Proceedings Article | 12 April 2017 Paper

Estimation of the strength development of ultra high performance concrete using a single embedded sensor

Changgil Lee, Sukhoon Pyo, John Bolander, Seunghee Park

Proceedings Volume 10168, 101682Q (2017) https://doi.org/10.1117/12.2260056

KEYWORDS: Resistance, Sensors, Signal attenuation, Wave propagation, Ferroelectric materials, Waveguides, Ultrasonics, Embedded systems, Materials processing, Polarization

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Proceedings Article | 19 April 2013 Paper

Visualization technique for fatigue cracks at steel structures integrating a scanning laser source with piezoelectric sensors

Changgil Lee, Ju-Won Kim, Hyun Uk Kim, Seunghee Park

Proceedings Volume 8692, 86922D (2013) https://doi.org/10.1117/12.2009968

KEYWORDS: Wave propagation, Ultrasonics, Sensors, Visualization, Laser systems engineering, Pulsed laser operation, Nondestructive evaluation, Imaging systems, Optical filters, Laser sources

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Proceedings Article | 5 April 2012 Paper

Nonlinear self-sensing impedance-based fatigue crack detection under a low-frequency vibration

Changgil Lee, Seunghee Park

Proceedings Volume 8347, 83471I (2012) https://doi.org/10.1117/12.915483

KEYWORDS: Modulation, Ferroelectric materials, Acoustics, Spectroscopy, Feature extraction, Capacitors, Data acquisition, Nondestructive evaluation, Damage detection, Phase shift keying

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Proceedings Article | 3 April 2012 Paper

Magnetic flux leakage-based steel cable NDE and damage visualization on a cable climbing robot

Ju-Won Kim, Changgil Lee, Seunghee Park, Jong Jae Lee

Proceedings Volume 8345, 83451W (2012) https://doi.org/10.1117/12.915579

KEYWORDS: Magnetism, Sensors, Visualization, Nondestructive evaluation, Head, Bridges, Magnetic sensors, Inspection, Electroluminescence, Damage detection

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Proceedings Article | 30 March 2012 Paper

Development of a guided wave-based concrete strength estimation system using an integrated smart sensor

Ju-Won Kim, Seok Inn Hong, Changgil Lee, Seunghee Park

Proceedings Volume 8346, 83461N (2012) https://doi.org/10.1117/12.915480

KEYWORDS: Smart sensors, Sensors, Wave propagation, Waveguides, System integration, Ferroelectric materials, Embedded systems, Environmental sensing, Ceramics, Statistical analysis

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Proceedings Article | 30 March 2012 Paper

Nd:YAG Pulsed Laser based flaw imaging techniques for noncontact NDE of an aluminum plate

Woong-Ki Park, Changgil Lee, Seunghee Park

Proceedings Volume 8346, 83461H (2012) https://doi.org/10.1117/12.915477

KEYWORDS: Ultrasonics, Nondestructive evaluation, Wave propagation, Pulsed laser operation, Sensors, Aluminum, Ultrasonography, Nd:YAG lasers, Inspection, Imaging systems

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Proceedings Article | 14 April 2011 Paper

Embedded piezoelectric sensor-based real-time strength monitoring during curing process of concrete

Dong-Jin Kim, Changgil Lee, Hajoo Chang, Seunghee Park

Proceedings Volume 7981, 79812S (2011) https://doi.org/10.1117/12.880031

KEYWORDS: Sensors, Feature extraction, Waveguides, Ferroelectric materials, Data acquisition, Environmental sensing, Neodymium, Embedded systems, Lead, Analytical research

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Proceedings Article | 1 April 2011 Paper

Damage classification of pipelines under a water flow operation using a multi-scale actuated sensing technology

Chang-Gil Lee, Seunhee Park

Proceedings Volume 7984, 79840H (2011) https://doi.org/10.1117/12.880028

KEYWORDS: Waveguides, Structural health monitoring, Ferroelectric materials, Wavelets, Pattern recognition, Sensing systems, Sensors, Feature extraction, Image classification, Temperature metrology

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Proceedings Article | 8 April 2009 Paper

Frequency domain reference-free crack detection using transfer impedances in plate structures

Seunghee Park, Changgil Lee, Hoon Sohn

Proceedings Volume 7295, 72951B (2009) https://doi.org/10.1117/12.815432

KEYWORDS: Ferroelectric materials, Detection theory, Damage detection, Data conversion, Aluminum, Signal detection, Wave propagation, Structural health monitoring, Time metrology, Environmental sensing

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Proceedings Article | 30 March 2009 Paper

Application of a baseline-free damage detection technique to complex structures

Changgil Lee, Seungbum Kim, Hoon Sohn

Proceedings Volume 7292, 729221 (2009) https://doi.org/10.1117/12.815703

KEYWORDS: Ferroelectric materials, Convolution, Wave plates, Nondestructive evaluation, Damage detection, Wave propagation, Data conversion, Waveguides, Numerical simulations, Environmental sensing

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Proceedings Article | 8 April 2008 Paper

The effect of through-the-thickness holes on a reference-free damage diagnosis technique

Changgil Lee, Seungbum Kim, Hoon Sohn

Proceedings Volume 6932, 69321U (2008) https://doi.org/10.1117/12.776600

KEYWORDS: Ferroelectric materials, Wave propagation, Wave plates, Damage detection, Time metrology, Polarization, Refraction, Nondestructive evaluation, Signal detection, Transducers

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Showing 5 of 11 publications

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