A5101670666- Concrete and Cement Materials Research
- Microstructure and mechanical properties
- Innovative concrete reinforcement materials
- Aluminum Alloys Composites Properties
- Metallurgy and Material Forming
- Concrete Corrosion and Durability
- Microstructure and Mechanical Properties of Steels
- Aluminum Alloy Microstructure Properties
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Concrete Properties and Behavior
- Additive Manufacturing Materials and Processes
- Metal and Thin Film Mechanics
- Organic Light-Emitting Diodes Research
- Graphite, nuclear technology, radiation studies
- Recycled Aggregate Concrete Performance
- Fatigue and fracture mechanics
- High Temperature Alloys and Creep
- Metal Forming Simulation Techniques
- Metal Alloys Wear and Properties
- Radiation Shielding Materials Analysis
- Intermetallics and Advanced Alloy Properties
- Geotechnical Engineering and Soil Stabilization
- Welding Techniques and Residual Stresses
- Additive Manufacturing and 3D Printing Technologies
Pusan National University
2014-2024
Korea Institute of Materials Science
2024
Samsung (South Korea)
2002-2021
Korea Testing Laboratory
2016-2021
California State University, Fullerton
2018-2019
Seoul National University
1997-2016
Gangneung–Wonju National University
2013-2014
UES (United States)
2004-2012
University of Nevada, Las Vegas
2012
Catholic University of Korea
2009-2011
This paper describes the manufacturing method and properties of a superalloy as gas turbine blade material thermal barrier coating to protect it. The development process characteristics each casting were introduced. In particular, single crystal superalloys analyzed for creep tensile with temperature according chemical composition. addition, theories life prediction models summarized comparative analysis was performed. Finally, processes coatings introduced, effects mechanical, thermal,...
The viscoplastic deformation of polycrystals under uniaxial loading is investigated to determine the relationship between hot spots in stress and their location relation microstructure. A 3D full-field formulation based on fast Fourier transforms for prediction poly-crystals used with rate-sensitive crystal plasticity. Two measured polycrystalline structures are instantiate simulations, as well a fully periodic synthetic polycrystal adapted from simulation grain growth. Application...
Numerous studies on machine learning-based creep life prediction using the data collected from various existing experimental have been reported. Since of is heavily influenced by quality and integrity data, preprocessing required to eliminate physically inconsistent datapoints, known as outliers. In present study, a screening methodology was developed detect outliers survey in literature. The consisted selecting appropriate learning models for through an assessment their validity physics,...
Heat treatment is widely used to improve the properties of Al–Si–Mg alloys and its outcomes are influenced by parameters applied during treatment. This study describes effect solution artificial aging treatments on microstructure mechanical die-cast alloys. The as-cast alloy was mainly composed α-Al, complex needle-type eutectic Si particles, Mg2Si, α-AlFeMn. particles disintegrated into spheroidal morphologies, while Mg2Si dissolved due solid maximum yield strength (YS) ultimate tensile...
Microstructural change of the additive manufactured (AMed) SUS 316 L part via surface machining and its effects on mechanical properties are analyzed. The laminated layer is formed with higher hardness strength comparing to inside due distortion grains through repeated melting rapid solidification. Through microstructure analysis inverse pole figure grain boundary information maps before after machining, we found out how affects material behavior. machined simple-stepped-model (SSM) specimen...
Ternary blends composed of two donor absorbers with complementary absorptions provide an opportunity to enhance the short-circuit current and thus power conversion efficiency (PCE) organic solar cells. In addition absorption donors, ternary may exhibit favorable morphology for high-performance cells when one chooses properly pair. For this purpose, we develop a blend donors (diketopyrrolopyrrole-based polymer (PTDPP2T) small molecule ((TDPP)2Ph)) acceptor (PC71BM). The cell made 10 wt %...
In this study, the effect of internal pores formed by a superabsorbent polymer (SAP) was analyzed evaluating compressive strength, chloride penetration depth, drying shrinkage, and pore size distribution SAP-containing concrete, while securing workability using water-reducing agent (WRA). The experimental results showed that amount WRA necessary increased as SAP added increased, strength highest when content 1.5% concrete mix. Drying shrinkage tended to decrease it decreased approximately...