Suyun Ham
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View article: Advanced Signal Analysis Model for Internal Defect Mapping in Bridge Decks Using Impact-Echo Field Testing
Advanced Signal Analysis Model for Internal Defect Mapping in Bridge Decks Using Impact-Echo Field Testing Open
This study presents an advanced signal analysis model for internal defect identification in bridge decks using impact echo field testing data designed to mitigate signal noise and the variability encountered during real-world inspections. …
View article: Design optimization of energy efficient self-heating systems using CNT-and CF-embedded sectional heating cement composites
Design optimization of energy efficient self-heating systems using CNT-and CF-embedded sectional heating cement composites Open
View article: Stuck bridges, buckling roads − extreme heat is wreaking havoc on America’s aging infrastructure
Stuck bridges, buckling roads − extreme heat is wreaking havoc on America’s aging infrastructure Open
View article: Wave Dispersion Behavior in Quasi-Solid State Concrete Hydration
Wave Dispersion Behavior in Quasi-Solid State Concrete Hydration Open
This paper aims to investigate wave dispersion behavior in the quasi-solid state of concrete to better understand microstructure hydration interactions. The quasi-solid state refers to the consistency of the mixture between the initial liq…
View article: An Analytical Antenna Modeling of Electromagnetic Wave Propagation in Inhomogeneous Media Using FDTD: A Comprehensive Study
An Analytical Antenna Modeling of Electromagnetic Wave Propagation in Inhomogeneous Media Using FDTD: A Comprehensive Study Open
This paper discusses the challenges in characterizing electromagnetic (EM) waves propagating through inhomogeneous media, such as reinforced cement concrete and hot mix asphalt. Understanding the EM properties of materials, including their…
View article: Performance monitoring leveraging advanced AI technique with CNN
Performance monitoring leveraging advanced AI technique with CNN Open
The main goal of this project is to study and develop a reliable nondestructive testing (NDT)-based structural performance prediction model framework leveraging the advanced machine learning convolutional neural network (CNN) technique and…
View article: Performance monitoring leveraging advanced AI technique with CNN
Performance monitoring leveraging advanced AI technique with CNN Open
The main goal of this project is to study and develop a reliable nondestructive testing (NDT)-based structural performance prediction model framework leveraging the advanced machine learning convolutional neural network (CNN) technique and…
View article: Performance monitoring leveraging advanced AI technique with CNN
Performance monitoring leveraging advanced AI technique with CNN Open
The main goal of this project is to study and develop a reliable nondestructive testing (NDT)-based structural performance prediction model framework leveraging the advanced machine learning convolutional neural network (CNN) technique and…
View article: Study On Hybrid Model Combining Super Learner And Physics-based Models For SHM In Bridges Using Low-cost BWIM
Study On Hybrid Model Combining Super Learner And Physics-based Models For SHM In Bridges Using Low-cost BWIM Open
The main objective of this project is to study and develop hybrid models of BWIM physics-based models incorporates with SHM inspection used by artificial intelligence (AI) techniques to predict structural damage. This study presents a comp…
View article: Study On Hybrid Model Combining Super Learner And Physics-based Models For SHM In Bridges Using Low-cost BWIM
Study On Hybrid Model Combining Super Learner And Physics-based Models For SHM In Bridges Using Low-cost BWIM Open
The main objective of this project is to study and develop hybrid models of BWIM physics-based models incorporates with SHM inspection used by artificial intelligence (AI) techniques to predict structural damage. This study presents a comp…
View article: Study On Hybrid Model Combining Super Learner And Physics-based Models For SHM In Bridges Using Low-cost BWIM
Study On Hybrid Model Combining Super Learner And Physics-based Models For SHM In Bridges Using Low-cost BWIM Open
The main objective of this project is to study and develop hybrid models of BWIM physics-based models incorporates with SHM inspection used by artificial intelligence (AI) techniques to predict structural damage. This study presents a comp…
View article: Energy-Efficient Ultrasonic Water Level Detection System with Dual-Target Monitoring
Energy-Efficient Ultrasonic Water Level Detection System with Dual-Target Monitoring Open
This study presents a developed ultrasonic water level detection (UWLD) system with an energy-efficient design and dual-target monitoring. The water level monitoring system with a non-contact sensor is one of the suitable methods since it …
View article: Image Analysis and Functional Data Clustering for Random Shape Aggregate Models
Image Analysis and Functional Data Clustering for Random Shape Aggregate Models Open
This study presents a random shape aggregate model by establishing a functional mixture model for images of aggregate shapes. The mesoscale simulation to consider heterogeneous properties concrete is the highly cost- and time-effective met…
View article: Detection and Estimation of Inundation and Associated Risks Using Traffic and Monitoring Cameras and Image Processing Under Extreme Flooding Conditions
Detection and Estimation of Inundation and Associated Risks Using Traffic and Monitoring Cameras and Image Processing Under Extreme Flooding Conditions Open
The main objective of this project is to develop an inundation detection and evaluation framework using images from traffic monitoring cameras and reliable flood monitoring under extreme precipitation conditions. This study presents a comp…
View article: Real-Time Early Detection and Monitoring of Flooding Using Low-Cost Highly Sensitive Ultrasound Sensing of Water Level
Real-Time Early Detection and Monitoring of Flooding Using Low-Cost Highly Sensitive Ultrasound Sensing of Water Level Open
Flooding poses safety hazards to motorists, emergency and maintenance crews and may cause costly damage to transportation infrastructure and its operation. Flash flooding, in particular, causes the most flood-related deaths According to NO…
View article: Detection and Estimation of Inundation and Associated Risks Using Traffic and Monitoring Cameras and Image Processing Under Extreme Flooding Conditions
Detection and Estimation of Inundation and Associated Risks Using Traffic and Monitoring Cameras and Image Processing Under Extreme Flooding Conditions Open
The main objective of this project is to develop an inundation detection and evaluation framework using images from traffic monitoring cameras and reliable flood monitoring under extreme precipitation conditions. This study presents a comp…
View article: Real-Time Early Detection and Monitoring of Flooding Using Low-Cost Highly Sensitive Ultrasound Sensing of Water Level
Real-Time Early Detection and Monitoring of Flooding Using Low-Cost Highly Sensitive Ultrasound Sensing of Water Level Open
Flooding poses safety hazards to motorists, emergency and maintenance crews and may cause costly damage to transportation infrastructure and its operation. Flash flooding, in particular, causes the most flood-related deaths According to NO…
View article: Identification of Inundation Using Low-Resolution Images from Traffic-Monitoring Cameras: Bayes Shrink and Bayesian Segmentation
Identification of Inundation Using Low-Resolution Images from Traffic-Monitoring Cameras: Bayes Shrink and Bayesian Segmentation Open
This study presents a comparative assessment of image enhancement and segmentation techniques to automatically identify the flash flooding from the low-resolution images taken by traffic-monitoring cameras. Due to inaccurate equipment in s…
View article: A Numerical Study for Performance Prediction of a Metal Hydride Thermal Energy Conversion System Elaborating the Superadiabatic Condition
A Numerical Study for Performance Prediction of a Metal Hydride Thermal Energy Conversion System Elaborating the Superadiabatic Condition Open
In this study, we investigate a numerical-modeling method uniquely performing analyses of 50 different metal hydrides to find the optimized thermal effect. This paper presents a metal-hydride thermal energy conversion method, which offers …
View article: Singular Integral Solutions of Analytical Surface Wave Model with Internal Crack
Singular Integral Solutions of Analytical Surface Wave Model with Internal Crack Open
In this study, singular integral solutions were studied to investigate scattering of Rayleigh waves by subsurface cracks. Defining a wave scattering model by objects, such as cracks, still can be quite a challenge. The model’s analytical s…
View article: 2D Random Shape of Aggregate Model Using Image Processing and Convex Combination Theory
2D Random Shape of Aggregate Model Using Image Processing and Convex Combination Theory Open
Ultrasonic non-destructive testing (UNDT) is used for detecting and locating damage in concrete structures such as bridge decks and pavement. There are even advanced UNDT methods such as the incoherent back-scattering approach that is one …
View article: Acoustic evaluation of concrete delaminations using ball-chain impact excitation
Acoustic evaluation of concrete delaminations using ball-chain impact excitation Open
This letter presents an automated acoustic sensing device for rapid detection of delamination in concrete. The device consists of ball-chains for continual impact excitation and multi-channel microphones for acoustic sensing. A ball-chain …
View article: Damage assessment in reinforced concrete using contactless ultrasound
Damage assessment in reinforced concrete using contactless ultrasound Open
The poor state of the deteriorating national infrastructure makes essential the need for implementation of non-destructive evaluation (NDE) and structural health monitoring (SHM) for existing concrete structures. Conventional contact-type …
View article: The Effective Control of Hot Weather Concreting by Optimum Mineral and Chemical Admixtures
The Effective Control of Hot Weather Concreting by Optimum Mineral and Chemical Admixtures Open
본 연구는 슬럼프 감소, 연행 공기 부족, 건조수축 균열, 강도감소 등 굳지 않은 콘크리트와 굳은 콘크리트의 성질에 대한 타설시 고온의 악영향에 대한 원인분석을 실시하고 이를 경감시키기 위한 감수제, 공기연행제, 지연제 등의 화학적 혼화제와 플라이 애쉬, 고로 슬래그 등의 무기질 혼화재의 다양한 적용이 검토되었다. 즉, 서중 콘크리트의 품질향상을 위한 다양한 콘크리트 배합이 설계되고 각 배합에서의 굳지 않은 콘크리트 및 굳은…
View article: Application of Micro-Electro-Mechanical Sensors Contactless NDT of Concrete Structures
Application of Micro-Electro-Mechanical Sensors Contactless NDT of Concrete Structures Open
The utility of micro-electro-mechanical sensors (MEMS) for application in air-coupled (contactless or noncontact) sensing to concrete nondestructive testing (NDT) is studied in this paper. The fundamental operation and characteristics of M…