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IEEE International Conference on Management of Innovation and Technology, ICMIT

作者： Seong-hoon Gwon Hyung-jin Lee Sung-hwan Song Kyung-jin Yu Soon-ki Hong Jin-bum Park Young-soo Kim Jae-moon Shin Department of Management of Technology Sungkyunkwan University Suwon South Korea Supercomputing Center Korea Institute of Science and Technology Daejeon South Korea R&D Policy Division Korea Institute of Oriental Medicine Daejeon South Korea Department of Systems Management Engineering Sungkyunkwan University Suwon South Korea

Securing supercomputing technology and resources are urgently needed for Korea to lead scientific researches and to enhance industrial competitiveness in the next decade. In this paper, supercomputing technologies and services were systematically classified to help KISTI formulate the supercomputing development strategies. These classification systems are also expected to contribute to identifying, selecting, and managing research projects for KISTI Supercomputing center.

关键词： research and development Technology management Supercomputers Technology planning research and development management resource management Engineering management Computer networks Management training Software systems

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An energy analysis for alternator regeneration system using VHdL-AMS multi domain simulation

An energy analysis for alternator regeneration system using ...

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International Conference on Electrical Machines and systems (ICEMS)

作者： Kimitoshi Tsuji Shinji Yamamoto Takashi Abe Tsuyoshi Higuchi Michito Enomoto Vehicle Control System Engineering Management Division Toyota Motor Corporation Aichi Japan Department of Electrical and Electronic Engineering Nagasaki University Nagasaki Japan R&D Department In Vehicle Systems R&D CENTER Automotive R&D Division YAZAKI Corporation Japan

recently, the use of multi domain simulation is becoming indispensable for discussing system performance of a vehicle. In this paper, the simulation technology applied to CO 2 reduction using regeneration for a conventional 12 V battery system vehicle is discussed. The energy analysis results for drive Shaft, Brake and Alternator regeneration shows the optimized Alternator performance for the fuel economy.

关键词： Alternators Analytical models vehicles Power system modeling research and development Batteries Shafts Fuel economy Kirchhoff's Law Power generation

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An estimation method of rotational direction and speed for free running AC machines without speed and voltage sensor

An estimation method of rotational direction and speed for f...

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International Conference on Electrical Machines and systems (ICEMS)

作者： Hideaki Iura Zhe Chen Kozo Ide Tsuyoshi Hanamoto Inverter Development Department Drive Division Yaskawa Electric Corporation Japan Corporate R&D Center Yaskawa Electric Corporation Japan Graduate school of Life Science & Systems Engineering Kyushu Institute of Technology Japan

This paper presents an estimation method of rotational direction and speed for free running AC machines driven by an inverter without speed and voltage sensor. The method has four estimation modes, and the method utilized only the measured phase current of machines. The amplitude of current during the estimation is suppressed to lower levels such as the exciting current, which is smaller than the rated value. Good performance of this method is confirmed by the experiment.

关键词： AC machines Voltage Inverters Phase estimation Sensor systems Life estimation Power supplies Permanent magnet machines Frequency estimation research and development

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Evaluation of Alpha-case in Titanium Castings

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Journal of Materials Science & Technology 2008年第1期24卷 70-74页

作者： Si-Young Sung Bong-Jae Choi Beom-Suck Han Han-dun Oh Young-Jig Kim Materials & Processing Engineering Center R&D Division Korea Automotive Technology InstituteChonanChungnamKorea Department of Advanced Materials Engineering Sungkyunkwan University SuwonKorea Department of Materials Science Hanseo University Seosan 352-820Korea

The alpha-case formation reactions between Ti and investment molds （Al-2O-3,ZrSiO-4,ZrO-2,CaO stabilized ZrO-2） were evaluated in a plasma arc melting *** of thermodynamic approaches,there were distinct alpha-case *** reaction products were characterized by electron probe micro-analysis and transmission electron ***α-case generation between Ti and Al-2O-3 mold was not able to be explained by the conventionalα-case formation mechanism,which is known to be formed by the interstitials,especially oxygen dissolved from mold ***,from our experimental results and thermodynamic calculations,it was confirmed that theα-case is formed not only by an interstitial element but also by substitutional metallic elements dissolved from mold *** newly establishedα-case formation mechanism will surely lead to a variety of significant applications of theα-case controlled Ti casting.

关键词： Titanium Casting Alpha-case Net-shape

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Evaluation the Properties of Titanium Matrix Composites by Melting route Synthesis

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Journal of Materials Science & Technology 2008年第1期24卷 105-109页

作者： Bong-Jae Choi Si-Young Sung Myoung-Gyun Kim Young-Jig Kim Department of Advanced Materials Engineering Sungkyunkwan University SuwonKorea Department of Advanced Materials Engineering Sungkyunkwan University SuwonKorea Materials & Processing Engineering CenterR&D DivisionKorea Automotive Technology InstituteChonanChungnamKorea Research Institute of Industrial Science and Technology Pohang Korea

The main purpose of this study is an in-situ synthesis of （TiB＋TiC） hybrid titanium matrix composites （TMCs） by vacuum induction melting method and to verify its mechanical *** melting route was adopted to synthesize the commercial pure titanium （cp Ti） and granular boron carbide （B-4C）.The reinforcements,the fraction of 10 ***,were formed by adding 1.88 wt pct B-4C to cp *** in-situ synthesis of TMCs,electron probe micro-analysis elemental mapping was carried out to confirm the distribution and shape of *** cone-on-disk type sliding wear test was also done for the identification of *** is concluded that （TiB＋TiC） hybrid TMCs can be in-situ synthesized and has better wear properties than H13.

关键词： Titanium matrix composites H13 In-situ Wear

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Casting and Modeling of Titanium Aluminides for automotive 11

Casting and Modeling of Titanium Aluminides for Automotive

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11th World Conference on Titanium, Ti-2007

作者： Sung, Si-Young Choi, Bong-Jae Kim, Young-Jig Department of Advanced Materials Engineering Sungkyunkwan University 300 Chun-chun dong Jangan-gu Gyeonggi-do Suwon440-746 Korea Republic of Materials and Processing Engineering Center R&D Division Korea Automotive Technology Institute 74 Youngjung-Ri Pungse-Myun Chungnam Chonan330-912 Korea Republic of

ISBN: (纸本)9784889034066

The aim of this study is to optimize the economic net-shape forming of TiAl alloys for the automotive parts. The fluidity of TiAl alloys is increased with mold preheating temperature since they have a peritectic reaction that appears in the form of envelopment, surrounding each particles of the primary constituent. The thermo-physical variables estimated by casting process were applied to the modeling of TiAl alloy automotive parts casting using the Magmasoft®. The results of the investment casting and modeling of TiAl alloys confirm that the casting route can be an effective approach for the economic net-shape forming of TiAl alloys. © Ti-2007 - Proceedings of the 11th World Conference on Titanium. All rights reserved.

关键词： Investment casting

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Alpha-Case Controlled Titanium Alloys Casting 11

Alpha-Case Controlled Titanium Alloys Casting

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11th World Conference on Titanium, Ti-2007

ISBN: (纸本)9784889034066

The alpha-case formation mechanism was elucidated for the economic titanium casting. The α-case formation reaction between Ti and Al2O3 mold was examined in a plasma arc melting furnace. The reaction products were characterized by electron probe micro-analyzer and transmission electron microscopy. The α-case generation between Ti and Al2O3 mold was not able to be explained by the conventional α-case formation mechanism, which is known to be formed by the interstitials, especially oxygen dissolved from mold materials. However, from our experimental results and thermodynamic calculations, it was confirmed that the α-case is formed not only by an interstitial element but also by substitutional metallic elements dissolved from mold materials. Our newly established α-case formation mechanism will surely lead to a variety of significant applications of the α-case free Ti casting. © Ti-2007 - Proceedings of the 11th World Conference on Titanium. All rights reserved.

关键词： Titanium castings

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Abstracts for the 6th Congress of Asian Sleep research Society

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Sleep and Biological rhythms 2009年第4期7卷 A1-A49页

作者： Seog Ju Kim In Kyoon Lyoo Yu-Jin Lee do-Un Jeong Hirohiko Kanai Masanori Ookubo Atsushi Yoshimura Masako Okawa Noto Yamada Takeshi Munezawa Yoshitaka Kaneita Yoneatsu Osaki Hideyuki Kanda Tadahiro Ohtsu Masumi Minowa Kenji Suzuki Susumu Hijuchi Hiroyuki Suzuki Takashi Ohida Takashi Abe Yoko Komada Shoichi Asaoka Yuichi Inoue Jin-Seong Lee Sang-Yong Cho deependra Kumar Hruda N. Mallick Velayudhan M. Kumar Mahesh K. Kaushik Akihiro Karashima Noiihiro Katayama Mitsuyuki Nakao ravindra P. Nagendra Sathiamma Sulekha Sathyaprabha T. Narasappa Pradhan Nityanadan Bindu M. Kutty M. Nirmala P. N. ravindra Basavaraj ramappa Tubaki T. N. Sathyaprabha d. Sudhakar G. S. Lavekar C. r. Chandrashekar Kazuyoshi Kitaoka Mika Shimizu Sachiko Chikahisa Kazuo Yoshizaki Hiroyoshi Sei Jong-Won Kim Misa Takegami Shin Yamazaki Yasuaki Hayashino rei Ono Koji Otani Miho Sekiguchi Shinichi Konno Shunichi Fukuhara Antonia J. Jakobson Paul Fitzgerald russell Conduit Xin Shirley Li Siu Ping Joyce Lam Wai Man Mandy Yu Yun Kwok Wing Kazue Okamoto-Mizuno Koh Mizuno Mituaki Yamamoto Shuichiro Shirakawa Hirokazu doi Mikako Kato Kazuyuki Shinohara Masako Tamaki Shiori Matsuda Katsuo Yamazaki Tadao Hori Keiko Ogawa Kazumi Takahashi Kunio Kitahama Katuo Yamazaki Yoshimasa Koyama Kohei Shioda Yugo Ueda Yukiko Nakamura Clara Inoue Kazushige Goto Sunao Uchida Yuko Morita Yoshiko Honda Tohru Kodama Mari Hagihara Toru Nakajima Masato Saito Yoshihiko Koga Shinichiro Tanaka Hiroshi Yamadera Madoka Takahara Sachiko Suwa Minoru Onozuka Sadao Sato Fumiharu Togo Taiki Komatsu Takeshi Mitani Jongbae Choi Bin Zhang Taeko Sasai Hiromi Mitsubayashi Mitsuhiro Ohtsu Isao Hasegawa Tatsuya Ishii Akira Komori Asami Suzuki Yue Nakahara Mitsuyasu Hiroki Mariko Nakauma Nobuo Someya Tomomasa Ochiai Shouhei Komori rayleigh Ping-Ying Chiang Zai-Ting Yeh Seong T. Kim Seung H. Yoon Jeong S. Kwon Jong H. Choi Hyung J. Ahn Youngsoo Kim Bolortuya Yunren Lichao Chen radhika Basheer robert W. Mccarley robert E. Strecker Makoto Honda Tetsuaki Arai Miyuki Fukazawa Yutaka Honda Kuniaki T Department of Psychiatry Gachon University of Medicine and Science Incheon Republic of Korea Department of Psychiatry Seoul National University Seoul Republic of Korea Department of Neuropsychiatry and Center for Sleep and Chronobiology Seoul National University Hospital Seoul Republic of Korea Department of Neuropsychiatry Seoul National University Hospital Seoul Republic of Korea Seoul National University Hospital Seoul Republic of Korea Department of Psychiatry Shiga University of Medical Science Otsu Japan Division of Public Health Department of Social Medicine Nihon University School of Medicine Tokyo Japan Department of Public Health Nihon University School of Medicine Tokyo Japan Division of Environmental and Preventive Medicine Department of Social Medicine Faculty of Medicine Tottori University Yonago Japan Department of Hygiene and Preventive Medicine Fukushima Medical University Fukushima Japan Department of Public Health Showa University School of Medicine Tokyo Japan Faculty of Humanities Seitoku University Matsudo Japan Section on Behavioral Science Division of Clinical Research National Hospital Organization Kurihama Alcoholism Center Yokosuka Japan Department of Otolaryngology Second Hospital Fujita Health University Nagoya Japan National Hospital Organization Kurihama Alcoholism Center Kanagawa Japan Metropolitan Police Department Criminal Investigation Laboratory Tokyo Japan Japan Somnology Center Neuropsychiatrie Research Institute Tokyo Japan Department of Somnology Tokyo Medical University Tokyo Japan Japan Somnology Center Neuropsychiatric Research Institute Tokyo Japan Department of Somnology Tokyo Medical and Dental University Tokyo Japan Center for Sleep and Chronobiology Department of Psychiatry and Behavioral Science Seoul National University College of Medicine Seoul Republic of Korea Department of Psychiatry and Behavioral Science Center for Sleep and Chronobiology Seoul Republic of Korea Department of Physiology Al

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The dynamic Control of Hybrid Energy Storage Sysem for Mild HEV

The Dynamic Control of Hybrid Energy Storage Sysem for Mild ...

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IEEE Conference on vehicle Power and Propulsion (VPPC)

作者： Baek-Haeng Lee dong-Hyun Shin Hyun-Sik Song Jin-Beom Jeong Hee-Jun Kim Byeong-Woo Kim Department of Electronic Electrical Hanyang University South Korea KOREA Electronics System R&D Center Korea Automotive Technology Institute (KATECH) Division of Electrical Engineering and Computer Science Hanyang University School of Electrical Engineering Ulsan University

To improve the cycle life and efficiency of an energy storage system for HEV, a dynamic control system consisted of a switch between battery and ultracapacitor module and a controller is proposed, which is appropriate for mild hybrid vehicle with 42 V power net. The switch can be controlled based on the status of the battery and the ultracapacitor module, and a control algorithm that could largely decrease the number of high charging current peak is also implemented. Therefore the cycle life of the battery can be improved such that it is suitable for a mild hybrid vehicle with frequent engine start-stop and regenerative-braking. Also, by maximizing the use of the ultracapacitor, the system efficiency during high current charging and discharging operation is improved. Finally, this system has the effects that improves the efficiency of energy storage system and reduces the fuel consumption of a vehicle. To verify the validity of the proposed system, this paper presented cycles test results of different energy storage systems: a simple VrLA battery, hybrid energy pack (HEP, a VrLA battery in parallel with Ultracapacitor) and a HEP with a switch that controlled by energy management system (EMS). From the experimental result, it was proved the effectiveness of the algorithm.

关键词： Energy storage Hybrid electric vehicles Switches Supercapacitors Control systems vehicle dynamics Battery powered vehicles Engines Fuels System testing

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Crash Performance Evaluation of Hydro‐formed dP‐steel Tubes Considering Welding Heat Effects, Formability and Spring‐back

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AIP Conference Proceedings 2007年第1期907卷 424-429页

作者： Kyung‐Hwan Chung Junehyung Kim Wonoh Lee Ji‐Ho Lim Chongmin Kim Michael. L. Wenner Kwansoo Chung *Department of Material Science and Engineering Intelligent Textile System Research Center Seoul National University 56‐1 Shinlim‐dong Kwanak‐ku Seoul 151‐742 Korea ¶Automotive Steel Applications Research Group Technical Research Labs. POSCO 699 Gumho‐dong Gwangyang‐si Jeonnam 545‐090 Korea †Materials & Processes Lab. GM R&D and Planning General Motors Corporation Warren MI 48090‐9055 §Manufacturing Systems Research Lab. GM R&D and Planning General Motors Corporation Warren MI 48090‐9055

In order to numerically evaluate hydro‐formed dP‐steel tubes on crash performance considering welding heat effects, finite element simulations of crash behavior were performed for hydro‐formed tubes with and without heat treatment effects. Also, finite element simulations were performed for the sequential procedures of bending and hydro‐forming of tubes in order to design process parameters, particularly for the boost condition and axial feeding, considering formability and spring‐back. Effects of the material property including strain‐rate sensitivity on formability as well as spring‐back were also considered. The mechanical properties of the metal active gas (MAG) weld zone and the heat affected zone (HAZ) were obtained utilizing the continuous indentation method in this work.

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