Prof. Genda Chen Profile

Prof. Genda Chen

Professor at The Center for Intelligent Infrastructure

SPIE Involvement:

Conference Program Committee | Author

Publications (35)

Proceedings Article | 15 June 2023 Presentation

Recent development of Fe-C coated long-period fiber gratings, corrosion sensors

Ying Zhuo, Genda Chen

Proceedings Volume 12532, 1253202 (2023) https://doi.org/10.1117/12.2665270

KEYWORDS: Corrosion, Sensors, Fiber optics sensors, Fiber coatings, Metals, Calibration, Silver, Particles, Iron, Graphene

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Proceedings Article | 18 April 2023 Presentation

Heat treatment and polymer coating effect on Rayleigh scattering-based fiber optic temperature measurement (Conference Presentation)

Yanping Zhu, Genda Chen

Proceedings Volume 12486, 124860G (2023) https://doi.org/10.1117/12.2658620

KEYWORDS: Temperature metrology, Rayleigh scattering, Optical testing, Heat treatments, Coating, Fiber optics tests, Fiber optics, Polymers, Polymer optical fibers, Thermal effects

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Proceedings Article | 3 April 2018 Presentation

Strain measurement on the surface of diametrically loaded acrylic sphere with a distributed fiber optic sensor (Conference Presentation)

Matthew Klegseth, Yi Bao, Genda Chen

Proceedings Volume 10598, 105982B (2018) https://doi.org/10.1117/12.2296626

KEYWORDS: Fiber optics sensors, Optical spheres, Spherical lenses, Epoxies, Data modeling, Optical fiber cables, Structural health monitoring

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Proceedings Article | 11 May 2017 Presentation

Bridge cable fracture detection with acoustic emission test (Conference Presentation)

Hongya Qu, Tiantian Li, Genda Chen

Proceedings Volume 10169, 1016910 (2017) https://doi.org/10.1117/12.2258397

KEYWORDS: Acoustic emission, Interference (communication), Bridges, Feature extraction, Fourier transforms, Acoustics, Signal detection, Lithium, Nondestructive evaluation, Aerospace engineering

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SPIE Journal Paper | 20 October 2015

Strain distribution and crack detection in thin unbonded concrete pavement overlays with fully distributed fiber optic sensors

Yi Bao, Genda Chen

OE, Vol. 55, Issue 01, 011008, (October 2015) https://doi.org/10.1117/12.10.1117/1.OE.55.1.011008

KEYWORDS: Optical fibers, Sensors, Spatial resolution, Fiber optics sensors, Optical coatings, Single mode fibers, Scattering, Optical engineering, Fiber coatings, Temperature metrology

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Proceedings Article | 13 May 2015 Paper

Big data extraction with adaptive wavelet analysis (Presentation Video)

Hongya Qu, Genda Chen, Yiqing Ni

Proceedings Volume 9435, 94350V (2015) https://doi.org/10.1117/12.2083698

KEYWORDS: Wavelet transforms, Wavelets, Time-frequency analysis, Video, Data analysis, Fourier transforms, Bridges, Nondestructive evaluation, Feature extraction, Ground penetrating radar

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Proceedings Article | 13 May 2015 Paper

Strain distribution in thin concrete pavement panels under three-point loading to failure with pre-pulse-pump Brillouin optical time domain analysis (Presentation Video)

Yi Bao, John Cain, Yizheng Chen, Ying Huang, Genda Chen, Leonard Palek

Proceedings Volume 9437, 94370H (2015) https://doi.org/10.1117/12.2083697

KEYWORDS: Optical fibers, Sensors, Video, Failure analysis, Fiber optics sensors, Polymers, Single mode fibers, Sensor performance, Calibration, Adhesives

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Thin concrete panels reinforced with alloy polymer macro-synthetic fibers have recently been introduced to rapidly and cost-effectively improve the driving condition of existing roadways by laying down a fabric sheet on the roadways, casting a thin layer of concrete, and then cutting the layer into panels. This study is aimed to understand the strain distribution and potential crack development of concrete panels under three-point loading. To this end, six full-size 6ft×6ft×3in concrete panels were tested to failure in the laboratory. They were instrumented with three types of single-mode optical fiber sensors whose performance and ability to measure the strain distribution and detect cracks were compared. Each optical fiber sensor was spliced and calibrated, and then attached to a fabric sheet using adhesive. A thin layer of mortar (0.25 ~ 0.5 in thick) was cast on the fabric sheet. The three types of distributed sensors were bare SM-28e+ fiber, SM-28e+ fiber with a tight buffer, and concrete crack cable, respectively. The concrete crack cable consisted of one SM-28e+ optical fiber with a tight buffer, one SM-28e+ optical fiber with a loose buffer for temperature compensation, and an outside protective tight sheath. Distributed strains were collected from the three optical fiber sensors with pre-pulse-pump Brillouin optical time domain analysis in room temperature. Among the three sensors, the bare fiber was observed to be most fragile during construction and operation, but most sensitive to strain change or micro-cracks. The concrete crack cable was most rugged, but not as sensitive to micro-cracks and robust in micro-crack measurement as the bare fiber. The ruggedness and sensitivity of the fiber with a tight buffer were in between the bare fiber and the concrete crack cable. The strain distribution resulted from the three optical sensors are in good agreement, and can be applied to successfully locate cracks in the concrete panels. It was observed that the three types of fibers were functional until the concrete panels have experienced inelastic deformation, making the distributed strain sensing technology promising for real applications in pavement engineering.

Proceedings Article | 8 March 2014 Paper

Real-time weigh-in-motion measurement using fiber Bragg grating sensors

Ying Huang, Leonard Palek, Robert Strommen, Ben Worel, Genda Chen

Proceedings Volume 9061, 906109 (2014) https://doi.org/10.1117/12.2044132

KEYWORDS: Sensors, Fiber Bragg gratings, Roads, Electromagnetic coupling, Fiber reinforced polymers, Environmental sensing, Glasses, Motion measurement, Neodymium, Electromagnetic interference

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Proceedings Article | 19 April 2013 Paper

Real time bridge scour monitoring with magneto-inductive field coupling

Andriy Radchenko, David Pommerenke, Genda Chen, Pratik Maheshwari, Satyajeet Shinde, Viswa Pilla, Yahong Zheng

Proceedings Volume 8692, 86922A (2013) https://doi.org/10.1117/12.2009002

KEYWORDS: Antennas, Bridges, Sensors, Calibration, Receivers, Electronics, Human-machine interfaces, Amplifiers, Active sensors, Magnetic sensors

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Proceedings Article | 3 April 2012 Paper

Experimental validation of finite element model analysis of a steel frame in simulated post-earthquake fire environments

Ying Huang, W. Bevans, Hai Xiao, Zhi Zhou, Genda Chen

Proceedings Volume 8345, 83450Q (2012) https://doi.org/10.1117/12.914538

KEYWORDS: Finite element methods, Earthquakes, Sensors, Temperature metrology, 3D modeling, Computer simulations, Fiber optics sensors, Analytical research, Actuators, Molybdenum

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Proceedings Article | 18 April 2011 Paper

A quasi-distributed optical fiber sensor network for large strain and high-temperature measurements of structures

Ying Huang, Genda Chen, Hai Xiao, Yinan Zhang, Zhi Zhou

Proceedings Volume 7983, 798317 (2011) https://doi.org/10.1117/12.879328

KEYWORDS: Sensors, Temperature metrology, Sensor networks, Fiber optics sensors, Optical networks, Multiplexing, Optical filters, Optical fibers, Buildings, Fiber Bragg gratings

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Proceedings Article | 14 April 2011 Paper

Steel reinforcement corrosion detection with coaxial cable sensors

Iana Muchaidze, David Pommerenke, Genda Chen

Proceedings Volume 7981, 79811L (2011) https://doi.org/10.1117/12.879770

KEYWORDS: Corrosion, Sensors, Copper, Inductance, Interfaces, Bridges, Environmental sensing, Coating, Reflection, Oxidation

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Corrosion processes in the steel reinforced structures can result in structural deficiency and with time create a threat to human lives. Millions of dollars are lost each year because of corrosion. According to the U. S. Federal Highway Administration (FHWA) the average annual cost of corrosion in the infrastructure sector by the end of 2002 was estimated to be $22.6 billion. Timely remediation/retrofit and effective maintenance can extend the structure's live span for much less expense. Thus the considerable effort should be done to deploy corrosion monitoring techniques to have realistic information on the location and the severity of damage. Nowadays commercially available techniques for corrosion monitoring require costly equipment and certain interpretational skills. In addition, none of them is designed for the real time quality assessment. In this study the crack sensor developed at Missouri University of Science and Technology is proposed as a distributed sensor for real time corrosion monitoring. Implementation of this technology may ease the pressure on the bridge owners restrained with the federal budget by allowing the timely remediation with the minimal financial and labor expenses. The sensor is instrumented in such a way that the location of any discontinuity developed along its length can be easily detected. When the sensor is placed in immediate vicinity to the steel reinforcement it is subjected to the same chemical process as the steel reinforcement. And corrosion pitting is expected to develop on the sensor exactly at the same location as in the rebar. Thus it is expected to be an effective tool for active corrosion zones detection within reinforced concrete (RC) members. A series of laboratory tests were conducted to validate the effectiveness of the proposed methodology. Nine sensors were manufactured and placed in the artificially created corrosive environment and observed over the time. To induce accelerated corrosion 3% and 5% NaCL solutions were used. Based on the test results, the proposed/corrosion distributed sensor is capable of delivering fairly accurate information on the location of a discontinuity along the sensor caused by corrosion pitting. Forensic study was also conducted to validate the concept. In order to test the sensors in real live condition, 27 sensors were prepared to be placed into RC beams. The beams will be subjected to corrosive environment. After that the sensors will be monitored over the time for signs of corrosion.

Proceedings Article | 9 April 2010 Paper

A pragmatic and innovative approach for civil infrastructure management: structural behavior monitoring

Genda Chen

Proceedings Volume 7649, 76491I (2010) https://doi.org/10.1117/12.848714

KEYWORDS: Sensors, Corrosion, Bridges, Structural health monitoring, Coating, Reliability, Calibration, Aerospace engineering, Surgery, Fiber optics sensors

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Proceedings Article | 9 April 2010 Paper

Simultaneous strain and temperature measurement using long-period fiber grating sensors

Genda Chen, Hai Xiao, Ying Huang, Yinan Zhang, Zhi Zhou

Proceedings Volume 7649, 764902 (2010) https://doi.org/10.1117/12.848718

KEYWORDS: Sensors, Temperature metrology, Cladding, Carbon dioxide lasers, Fiber optics sensors, Fiber Bragg gratings, Optical fibers, Refractive index, Environmental sensing, Calibration

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Proceedings Article | 9 April 2010 Paper

Smart fiber-reinforced polymer anchorage system with optical fiber Bragg grating sensors

Minghua Huang, Zhi Zhou, Jianping He, Genda Chen, Jinping Ou

Proceedings Volume 7648, 76480Q (2010) https://doi.org/10.1117/12.847961

KEYWORDS: Fiber reinforced polymers, Fiber Bragg gratings, Sensors, Optical fibers, Civil engineering, Corrosion, Failure analysis, Epoxies, Adhesives, Bismuth

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Proceedings Article | 9 April 2010 Paper

Casing pipe damage detection with optical fiber sensors: a case study in oil well constructions

Zhi Zhou, Jianping He, Minghua Huang, Jun He, Jinping Ou, Genda Chen

Proceedings Volume 7649, 764908 (2010) https://doi.org/10.1117/12.848727

KEYWORDS: Sensors, Fiber Bragg gratings, Optical fibers, Fiber optics sensors, Fiber reinforced polymers, Epoxies, Sensing systems, Cements, Damage detection, Glasses

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Proceedings Article | 8 April 2009 Paper

Measurement accuracy improvement of Brillouin signal using wavelet denoising method

Jianping He, Zhi Zhou, Genda Chen, Jinping Ou

Proceedings Volume 7293, 72930B (2009) https://doi.org/10.1117/12.816688

KEYWORDS: Wavelets, Denoising, Interference (communication), Optical fibers, Signal processing, Signal to noise ratio, Sensing systems, Optical sensing, Acoustics, Control systems

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Proceedings Article | 7 April 2009 Paper

Smart FBG-based steel tie rod with self-monitoring functionality

Jianping He, Zhi Zhou, Genda Chen, Jinping Ou

Proceedings Volume 7293, 729308 (2009) https://doi.org/10.1117/12.816687

KEYWORDS: Fiber Bragg gratings, Sensors, Resistance, Fiber optics sensors, Glasses, Fiber reinforced polymers, Civil engineering, Corrosion, Safety, Environmental sensing

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Proceedings Article | 7 April 2009 Paper

A new kind of smart cable with functionality of full scale monitoring using BOTDR technique

Zhi Zhou, Jianping He, Genda Chen, Jinping Ou

Proceedings Volume 7293, 72930L (2009) https://doi.org/10.1117/12.816640

KEYWORDS: Sensors, Bridges, Fiber Bragg gratings, Optical fibers, Polymer optical fibers, Polymers, Resistance, Magnetic sensors, Temperature metrology, Fiber reinforced polymers

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Proceedings Article | 7 April 2009 Paper

Research and development of plastic optical fiber based smart transparent concrete

Zhi Zhou, Ge Ou, Ying Hang, Genda Chen, Jinping Ou

Proceedings Volume 7293, 72930F (2009) https://doi.org/10.1117/12.816638

KEYWORDS: Phase only filters, Fiber Bragg gratings, Epoxies, Polymer optical fibers, Structural health monitoring, Visible radiation, Optical fibers, Sensors, Cements, Resistance

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Proceedings Article | 30 March 2009 Paper

A novel long-period fiber grating sensor for large strain measurement

Genda Chen, Hai Xiao, Ying Huang, Zhi Zhou, Yinan Zhang

Proceedings Volume 7292, 729212 (2009) https://doi.org/10.1117/12.817715

KEYWORDS: Sensors, Cladding, Adhesives, Optical fibers, Glasses, Carbon dioxide lasers, Calibration, Earthquakes, Refractive index, Buildings

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Proceedings Article | 26 April 2007 Paper

Chaos theory analysis of a cable-stayed bridge: Part II. Analysis of monitoring data for base-line conditions

Richard Livingston, Shuang Jin, Genda Chen

Proceedings Volume 6529, 65293T (2007) https://doi.org/10.1117/12.715730

KEYWORDS: Bridges, Sensors, Analytical research, Data modeling, Chaos theory, Structural health monitoring, Complex systems, Nonlinear dynamics, Molybdenum, Computer simulations

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Proceedings Article | 10 April 2007 Paper

Mass-variable TLD systems and their seismic performance

Yuxiang Xin, Genda Chen

Proceedings Volume 6529, 65292I (2007) https://doi.org/10.1117/12.715158

KEYWORDS: Earthquakes, Particles, Liquids, Neodymium, Control systems, Near field, Electroluminescence, Foam, Analytical research, Molybdenum

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Proceedings Article | 10 April 2007 Paper

Real-time condition assessment of the Bill Emerson cable-stayed bridge using artificial neural networks

Wenjian Wang, Genda Chen, Bryan Hartnagel

Proceedings Volume 6529, 65291P (2007) https://doi.org/10.1117/12.715244

KEYWORDS: Bridges, Neural networks, Earthquakes, Finite element methods, Chlorine, Data modeling, Artificial neural networks, Damage detection, Aluminum, Bismuth

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Proceedings Article | 19 May 2005 Paper

Distributed cable sensors with memory feature for post-disaster damage assessment

Genda Chen, Ryan McDaniel, David Pommerenke, Shishuang Sun

Proceedings Volume 5767, (2005) https://doi.org/10.1117/12.600994

KEYWORDS: Sensors, Signal detection, Fiber reinforced polymers, Dielectrics, Data acquisition, Earthquakes, Reflection, Sensor performance, Visualization, Reflectometry

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Proceedings Article | 17 May 2005 Paper

Distributed coaxial cable crack sensors for crack mapping in RC

Gary Greene, Abdeldjelil Belarbi, Genda Chen, Ryan McDaniel

Proceedings Volume 5765, (2005) https://doi.org/10.1117/12.600143

KEYWORDS: Sensors, Signal attenuation, Reflection, Actuators, Dielectrics, Sensor performance, Chromium, Electromagnetic radiation, Signal detection, Molybdenum

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Proceedings Article | 17 May 2005 Paper

Distributed strain measurement of a large-scale reinforced concrete beam-column assembly under cyclic loading

Genda Chen, Bin Xu, Ryan McDaniel, Xiaofei Ying, David Pommerenke, Zhishen Wu

Proceedings Volume 5765, (2005) https://doi.org/10.1117/12.597466

KEYWORDS: Sensors, Fiber optics sensors, Dielectrics, Spatial resolution, Sensing systems, Distance measurement, Reflection, Reflectometry, Light scattering, Signal attenuation

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Proceedings Article | 29 July 2004 Paper

Signal loss, spatial resolution, and sensitivity of long coaxial crack sensors

Shishuang Sun, David Pommerenke, James Drewniak, Genda Chen

Proceedings Volume 5391, (2004) https://doi.org/10.1117/12.540033

KEYWORDS: Sensors, Signal attenuation, Dielectrics, Spatial resolution, Skin, Gold, Inductance, Physics, Numerical simulations, Device simulation

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Proceedings Article | 29 July 2004 Paper

Comparative study on semi-active control algorithms for piezoelectric friction dampers

Chaoqiang Chen, Genda Chen

Proceedings Volume 5391, (2004) https://doi.org/10.1117/12.539559

KEYWORDS: Earthquakes, Modulation, Control systems, Algorithm development, Numerical simulations, Near field, Electroluminescence, Mathematical modeling, Actuators, Logic

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Proceedings Article | 18 August 2003 Paper

Semiactive control of a steel frame with piezoelectric friction dampers

Genda Chen, Chaoqiang Chen

Proceedings Volume 5057, (2003) https://doi.org/10.1117/12.482688

KEYWORDS: Earthquakes, Actuators, Neodymium, Numerical simulations, Prototyping, Buildings, Data acquisition, Control systems, Civil engineering, Data modeling

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Proceedings Article | 18 August 2003 Paper

Continuous coaxial cable sensors for monitoring of RC structures with electrical time domain reflectometry principle

Genda Chen, Huimin Mu, James Drewniak, David Pommerenke

Proceedings Volume 5057, (2003) https://doi.org/10.1117/12.482687

KEYWORDS: Sensors, Copper, Calibration, Prototyping, Inductance, Reflection, Numerical simulations, Reflectometry, Silicon, Adhesives

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Proceedings Article | 30 July 2001 Paper

Seismic performance of multiple tuned mass dampers in suppressing multimode responses of building structures

Genda Chen, Jingning Wu

Proceedings Volume 4330, (2001) https://doi.org/10.1117/12.434146

KEYWORDS: Earthquakes, Electroluminescence, Control systems, Numerical simulations, Oscillators, Systems modeling, Motion measurement, Computer simulations, Molybdenum, System identification

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Proceedings Article | 30 July 2001 Paper

Experimental characterization of piezoelectric friction dampers

Gabriel Garrett, Genda Chen, Franklin Cheng, Wayne Huebner

Proceedings Volume 4330, (2001) https://doi.org/10.1117/12.434142

KEYWORDS: Actuators, Earthquakes, Control systems, Manufacturing, Ceramics, Molybdenum, Wind energy, Power supplies, Amplifiers, Civil engineering

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Proceedings Article | 20 April 2000 Paper

Behavior of piezoelectric friction dampers under dynamic loading

Genda Chen, Chaoqiang Chen

Proceedings Volume 3988, (2000) https://doi.org/10.1117/12.383170

KEYWORDS: Actuators, Logic, Control systems, Civil engineering, Wind energy, Earthquakes, Motion controllers, Electromechanical design, Bridges, Aerospace engineering

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Proceedings Article | 20 April 2000 Paper

Recent development in structural control including soil-structure interaction effect

Genda Chen, Jingning Wu, Chaoqiang Chen, Menglin Lou

Proceedings Volume 3988, (2000) https://doi.org/10.1117/12.383144

KEYWORDS: Control systems, Buildings, Earthquakes, Soil science, Algorithm development, Motion models, Control systems design, Systems modeling, Matrices, Smart materials

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Showing 5 of 35 publications

Conference Committee Involvement (38)

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIX

17 March 2025 | Vancouver, Canada

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2025

17 March 2025 | Vancouver, Canada

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2024

25 March 2024 | Long Beach, California, United States

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVIII

25 March 2024 | Long Beach, California, United States

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2023

13 March 2023 | Long Beach, California, United States

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII

13 March 2023 | Long Beach, California, United States

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI

7 March 2022 | Long Beach, California, United States