A5100678623- Structural Load-Bearing Analysis
- Heat Transfer and Boiling Studies
- Structural Analysis and Optimization
- Adsorption and Cooling Systems
- Metallurgy and Material Science
- Heat Transfer and Optimization
- Structural Engineering and Vibration Analysis
- Welding Techniques and Residual Stresses
- Engineering Applied Research
- Structural Analysis of Composite Materials
- Carbon Dioxide Capture Technologies
- Laser Material Processing Techniques
- Seismic Performance and Analysis
- Additive Manufacturing and 3D Printing Technologies
- Spacecraft and Cryogenic Technologies
- Hearing Loss and Rehabilitation
- Structural Health Monitoring Techniques
- Fluid Dynamics and Heat Transfer
- Composite Structure Analysis and Optimization
- Industrial Gas Emission Control
- Mechanical stress and fatigue analysis
- Vibration and Dynamic Analysis
- Structural Behavior of Reinforced Concrete
- Railway Engineering and Dynamics
- Advanced Sensor and Energy Harvesting Materials
Chung-Ang University
2024
Ulsan National Institute of Science and Technology
2023
Pohang Iron and Steel (South Korea)
2021
Korea Institute of Industrial Technology
2019-2020
Portland State University
2019
University of California, Irvine
2015
Powder bed fusion with a laser beam (PBF-LB) is widely used metal additive manufacturing method for fabricating complex three-dimensional components variety of metallic powders. However, parts fabricated by PBF-LB often present surface quality problems because the layer-wise building process and occurrence partially unmelted powder particles. To reduce roughness, post-processing required, which incurs additional time cost. In particular, downskin generally has worst roughness among...
Welding power source and welding robot are the most important components of automation systems. In this paper, we summarized sales market revenues using analysis reports from 2007 to 2017. The was conducted for arc resistance welding, respectively. 2017 returned that 2007, approximately doubled 2007. These trends found be closely related major application industries such as heavy industry automotive industry. Key words: Market analysis, source, robot, Arc Resistance spot
In this paper, the sales and import/export status of Korean welding industry was investigated using statistical data. Since process is a partial entire manufacturing process, amount calculated by final application industries, ratio welding- related expenditure in each industry. The 2017 amounted to about $6 billion, down level 10 years ago, total export decreased $500 million compared with 2011. Key words: Welding industry, Sales, Export, Import, materials equipment,
본 연구의 목적은 에너지 흡수형 강재 댐퍼를 이용하여 손상순서를 제어함으로써 주구조체를 재사용 할 수 있는 철골조시스템을 개발하고, 지진응답특성을 파악하는 것이다. 이를 위하여 댐퍼의 형상을 제안하고, 제안된 변형 형상과 응력 분포를 알아보기 범용 유한요소해석 프로그램인 ANSYS(ver.10.0)을 이용한 비선형 유한요소해석을 수행하였다. 또한 파악하기 실대형 사이즈 <TEX>$54m{\times}2.4m$</TEX>의 1층 철골조 실험체 4개를 설계 및 제작하여 유사동적 지진응답실험을 연구에서 제안하는 제진요소로 사용하는 경우, 주구조체에 비하여 높은 강성을 갖는 댐퍼가 소폭의 변위에 먼저 소성화함으로써 이력에 의한 지진에너지를 흡수할 있으며, 지진응답에서 유리한 것이 판명되었다. The purpose of this study is to propose damper system which easy design, can ensure against risks, and...
In this paper, global and regional market trends for welding consumables were summarized using analysis reports from 2005 to 2017. the analysis, classified as rods, solid wire, flux cored submerged arc others. The material is on an increasing trend, markets of other countries are growing faster than those five conventional major (China, EU, USA, Japan Korea). Due automation processes, wire core electrodes stagnating or declining. Sales in each country types consumable influenced by...
Sternocleidomastoid (SCM) is a paired muscle that stretches along both sides of the neck area. It acts as an accessory inhalation. Abnormal SCM contraction during asthma usually sign further respiratory impairment. Thus, monitoring muscles has great significance in assessment and control. In this work, we develop wearable system based on optical sensor consists LED photo detector (PD). A voltage comparator enables microcontroller unit (MCU) to remain sleep mode until waken upon detecting...
Corrugated steel plate is a that processed to be corrugated in trapezoidal, sinusoidal or circular shapes, and has high flexibility the direction shear stiffness orthogonal from corrugation. Compared girder, this economically effective regard it can decrease self-weight when used web of girder. However, buckling pattern plates their resistance ability are different according corrugation shapes parameter. Therefore, study conducts liner analysis trapezoidal analyzes mode stress order compare...
히트 파이프 열교환기(HPHX)는 일반적인 열교환기와는 달리 파이프를 사용하기 때문에 열을 효과적으로 전달할 수 있다. 하지만 열교환 효율을 높이기 위해 외부에 얇은 핀(fin)을 추가하면, 이를 해석하기 많은 격자가 필요하게 되고 높은 해석 비용으로 인해 정확도가 저하되게 된다. 본 연구에서는 full scale 전산 해석을 파이프의 외부 핀 영역을 porous media model 방식을 적용하였다. 통해 HPHX에서 model의 종류에 따른 열교환기에서의 열성능 및 효율변화를 분석하였으며 기반으로 작동 환경의 변화에 성능 변화를 확인하였다. 연구의 결과는 HPHX 열교환기에 대해 model을 활용한 해석의 방법을 제공함으로써 열 유동 성능의 예측 정확도 향상에 기여할 있을 것으로 기대된다.