A5101460989- Ultrasonics and Acoustic Wave Propagation
- Non-Destructive Testing Techniques
- Thermography and Photoacoustic Techniques
- Geophysical Methods and Applications
- Structural Health Monitoring Techniques
- Consumer Perception and Purchasing Behavior
- Geophysics and Gravity Measurements
- Customer Service Quality and Loyalty
- Engineering Applied Research
- Diverse Topics in Contemporary Research
- Teleoperation and Haptic Systems
- Flow Measurement and Analysis
- Human-Automation Interaction and Safety
- Aerospace and Aviation Technology
- Inertial Sensor and Navigation
- Electrochemical sensors and biosensors
- Historical Geography and Cartography
- Technology Adoption and User Behaviour
- Technology and Data Analysis
- Spectroscopy Techniques in Biomedical and Chemical Research
- Underwater Acoustics Research
- Welding Techniques and Residual Stresses
- Photoreceptor and optogenetics research
Korea Advanced Institute of Science and Technology
2009-2021
Jeonbuk National University
2014
In this paper, we propose a J-groove dissimilar weld crack visualization system based on ultrasonic propagation imaging (UPI) technology. A full-scale control rod drive mechanism (CRDM) assembly specimen was fabricated to verify the proposed system. An sensor contacted at one point of inner surface reactor vessel head part CRDM assembly. Q-switched laser beams were scanned generate waves around bead. The localization and sizing possible by wave imaging. Furthermore, spectral unveiled...
Barely visible impact damage from low-velocity impacts have been studied as critical design factors of composite structures. In this article, a dual-energy wave subtraction algorithm using an ultrasonic propagation imaging system is proposed to evaluate barely strategy fast in situ nondestructive evaluation or structural health monitoring (SHM). The type SHM and based on scanning laser-induced guided ultrasound fixed sensors. amplitude signals generated by the increases with increasing...
In various research fields, barely visible impact damages (BVID) caused by low velocity impacts have been studied as critical design factors of composite sandwich structures. Thus, dual-energy wave subtraction (DWS) algorithm using ultrasonic propagation imaging (UPI) system is proposed to evaluate BVID on panel. The UPI system, one the laser techniques that generates ultrasound structures with several tens kilohertz scan speed and visualizes propagation. Amplitude signals generated...
In this paper, an impact monitoring system using fiber Bragg grating (FBG) sensors and vibro-haptic actuators has been introduced. The is suggested for structural health (SHM) unmanned aerial vehicles (UAVs), by making a decision with human-robot interaction. composed two major subsystems; on-board equipped on UAV arm-wearable interface ground pilot. acquires impact-induced wavelength changes performs localization process, which was developed based arrival time calculation. helps pilots to...
In this paper, a novel distance-based slicing (DBS) algorithm is proposed for the visualization of inclusion defects within thick solid structure. The based on propagation distance traveled by ultrasonic wave signals and was integrated with generation laser scanning imaging (UPI) system in which fixed sensor positioned to detect induced through-the-thickness signals. advantages provided UPI allow an in-situ non-destructive evaluation real world applications. An investigation isotropic...
The purpose of this study is to verify the structural relationship among self-congruity, functional congruity, customer value and revisit intention for 283 customers using five-star four-star deluxe hotels. This online survey was conducted from April 23rd May 3rd, 2021 who have used hotels in past year by marketing research firm.<BR> Based on hypothesis presented study, results analysis are as follows. First, self-congruity congruity significant impact value. Second, no intention. Third, has...