The desire to maintain thermal loads acting on re-entry vehicles within acceptable limits drives numerous activities pertaining to research and development of thermal-protection materials. Metallic thermal-protection materials with low mass densities and life-cycle costs as well as greater strength to withstand thermal loads have been widely employed...
Taekyung Lee(School of Mechanical Engineering, Pusan National University, Korea) Multi-pass caliber-rolled Mg alloys possess a unique basal texture with split basal poles that are in contrast to alloys subjected to other plastic deformation processes. The intrinsic nature of texture development allows anisotropic material properties, which are...
Abstract Multi-functional materials that can convert one form of energy to another have drawn immense attention owing to their outstanding conversion efficiency and compatibility with CMOS semiconductor devices. Specifically, piezoelectric materials, which can be patterned in nano-thin-film or nano-particle forms, are suited for sensors, and actuators...
This lecture introduces vehicle chassis control and integrated chassis control. First, we will briefly introduce the mechanisms of ABS(Anti-lock Braking System), TCS (Traction Control System), ESC (Electronic Stability Control), Active Front Steering (AFS), RWS (Rear Wheel Steering), ECS (Electronic Controlled Suspension), and ARS (Active Roll)...
A journey to understand thermo-hydrodynamic coupling in cooling technology for high-heat-flux device Prof. Aejung Yoon ABSTRACT Thermal management of high-heat-flux electronic devices has recently become one of the most challenging problems in the latest industry. A pulsating heat pipe (PHP), has received attention in recent decades as a...
Multiscale Fatigue Life Prediction Models for Composite Materials Gun Jin Yun(gunjin.yun@snu.ac.kr) Department of Aerospace Engineering, Seoul National University Abstract Fiber-reinforced polymer matrix composite (FRPMC) materials have experienced fast growth in the aerospace industries over the past several decades, reaching out to applications to primary structural members. Due to nano...
Title: Unmanned Vehicle Advanced Research Center Human Machine Interface(HMI) Research Status Considering the level of autonomy of unmanned vehicles and human limitations of the operator, Human Machine Interface(HMI) technology that enables the operator to perform efficient and safe missions is being developed. The HMI project of...
Title: Agent-based Modeling and Simulation in the Generation of Digital Twins for Smart Manufacturing Abstract Over the years, the use of modeling and simulation (M&S) has been boosted for Digital Twinning of production systems. To keep pace with the technological changes, this talk covers three topics: i) M&S in...
Title: Applied Laser Processing for Semiconductor Fabrication Presenter: Prof. Joonghan Shin (Division of Mechanical Engineering and Automotive Engineering, Kongju National University) Abstract: Over the last ten years, laser processing has played a key role in the fabrication of semiconductor devices. Compared to the conventional heating process using a furnace or a lamp, laser processing has the following unique advantages: (a) local heating is possible with a small beam sot size; (b) raising the temperature of the material beyond its melting point is easily attainable due to high-intensity lasers; and (c) heating of shallow layer of the material just below the surface under the low thermal budget is possible by using an optimal wavelength and an annealing time in the range of milliseconds to nanoseconds. Due to the abovementioned characteristics, laser processing has been widely used in various applications for semiconductor manufacturing. This seminar aims to introduce the major applications (dopant activation, silicidation, void removal, and re-crystallization) of laser processing and the characteristics of laser equipment used for semiconductor manufacturing. ...
Introduction to Korea Space Launch Vehicle-II (Nuri) Korea Space Launch Vehicle-II (KSLV-II) has been developed to launch 1.5 ton mass to Sun Synchronized Orbit. KSLV-II is a three-stage rocket. The first stage is propelled by four 75 ton class liquid rocket engine of which propellants are liquid oxygen...
