A5101886658- Geotechnical Engineering and Underground Structures
- Additive Manufacturing and 3D Printing Technologies
- Geotechnical Engineering and Soil Stabilization
- Geotechnical Engineering and Soil Mechanics
- Innovations in Concrete and Construction Materials
- Manufacturing Process and Optimization
- Mechanical Behavior of Composites
- Geotechnical Engineering and Analysis
- High-Velocity Impact and Material Behavior
- Material Properties and Applications
- Structural Load-Bearing Analysis
- Injection Molding Process and Properties
- Fiber-reinforced polymer composites
- Recycling and Waste Management Techniques
- Semiconductor Quantum Structures and Devices
- Textile materials and evaluations
- Mechanical Failure Analysis and Simulation
- GaN-based semiconductor devices and materials
- Advanced Sensor and Energy Harvesting Materials
- Cellular and Composite Structures
- Photopolymerization techniques and applications
- Structural Response to Dynamic Loads
- Epoxy Resin Curing Processes
- Hydraulic Fracturing and Reservoir Analysis
- Additive Manufacturing Materials and Processes
Purdue University West Lafayette
2018-2025
Kyung Hee University
2024
Korea Electric Power Corporation (South Korea)
2022-2023
Korea Institute of Ocean Science and Technology
2022
Yonsei University
2014-2021
Manufacturing Institute
2020-2021
Seoul National University
2012-2019
Inha University
2019
Seoul National University Bundang Hospital
2019
The mechanical recycling process of fiber-reinforced composite parts involves shredding long continuous fibers into shorter discontinuous fibers. Since the performance shredded short is not as high that original fibers, application recycled composites limited. objective this study to enhance structural by integrating a set fiber precuts during molding process. 2-dimentional were positioned in structurally critical regions part, and remaining area was then filled with material. An aircraft...
Abstract To enhance the structural characteristics of recycled composites, this paper demonstrates a process that incorporates additively manufactured continuous fiber preforms in geometry is compression molded with recyclates. The preform designed to serve as primary reinforcement whereas material serves secondary composite part. Continuous were 60% by volume carbon fiber‐reinforced Poly Ether Ketone (PEKK) using Additive Fusion Technology (AFT) account for reshaping during molding and...
Abstract As the popularity of immersive and interactive technology continues to grow, there is demand for wearable or conformable tactile strain sensors human–computer-interaction. A major challenge in current durability, tremendously limiting their applications market. This study utilizes long carbon-fiber networks silicone elastomer matrix as electrodes sensing, which consequently strengthens sensors. Row column pattern was used create projected capacitive touch at every intersection...
In the present study, vertical load-carrying behavior of micropile foundations with various configuration conditions was investigated based on results from model load tests. Considered included inclination angle, spacing micropiles, and types foundations. The ultimate capacity micropiles varied installation showing an initial increase peak followed by a gradual decrease further in angle. micropiled rafts affected both angle spacing. mechanism for inclined condition proposed decomposed axial...
Abstract Recent advancements in 3D printing technology have expanded its application to manufacturing pressure sensors. By harnessing the cost‐effectiveness, streamlined processes, and design flexibility of printing, sensor fabrication can be customized meet specific performance needs. Thus far, development has been primarily limited creating molds for transferring patterns onto flexible substrates, restricting both material selection performance. To fully unlock potential advanced...
In this study, the effect of pile surface roughness on lateral load–carrying behavior piles embedded in sand was investigated. Centrifuge tests were conducted various model with different degrees roughness. The effects roughness, given by normalized Rn, lateral-load capacity and displacement analyzed. From centrifuge tests, it observed that lateral-loading markedly increased most significant within low up to Rn 0.024. Surface parameters for p-y method proposed as a function which could...
Many aerospace and automotive parts are made from advanced composite materials for increased performance weight savings. Composite tooling is used to manufacture when they manufactured by the original equipment manufacturer, but this typically not available in an aircraft repair station or shop. The authors have developed a method using laser-scanning technology design that could be replacement damage structure. scanning system portable scan components while on vehicle removed. laser scanner...
An improved rate equation model for GaN-based LEDs considering the effective volume of active region is proposed. Through numerical simulations, it confirmed that IQE, especially efficiency droop related with small volume. Also, we controlled by polarization charge, barriers between quantum wells, and current density. We also developed a fast reliable method extracting recombination coefficients IQE measuring transient characteristics
Composite honeycomb sandwich structure is widely used for aircraft structures such as control surfaces, radomes, engine cowls, and interior because of its lightweight high strength characteristics. One the disadvantages that they are prone to fluid intrusion. The purpose this study determine if structural properties core affected by contact with a fluid. test specimens were manufactured fiberglass prepreg facesheets Nomex® material in accordance ASTM C-365/365M. Test soaked several different...
The wavy-patterned carbon fiber reinforced elastomer composites that offered both the elongation characteristic of and stiffness reinforcement before reached its at failure was introduced in this study. goal study to develop demonstrate manufacturing process fiber-reinforced investigate behaviors under tensile loading conditions. A tow impregnated with a silicone placed test specimen mold specific pattern using placing jig. then poured into cast specimens. Various composites, each different...