• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2001.05a
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• pp.11-14
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• 2001

We give pressure stimulation into organic thin films and then manufacture a device under the accumulation condition that the state surface pressure is 30[mN/m]. LB layers of Arac. acid deposited by LB method were deposited onto slide glass as Y-type film. The physicochemical properties of the LB films were examined by UV absorption spectrum, SEM and AFM. The structure of manufactured device is Au/arachidic acid/Al. the number of accumulated layers are 3~9. Also. we then examined of the MIM device by means of I-V. The I-V characteristic of the device is measured from -3 to +3[V]. The insulation property of a thin film is better as the distance between electrodes is larger.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.20 no.9
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• pp.761-765
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• 2007

NASICON sensors compare properties with manufacture method in order to improve $CO_2$ sensitivity and stability the sensing behaviors. Oxidation mixing method and Sol-gel method were compare analyze to characteristic in which each other sintered to $900^{\circ}C\;to\;1100^{\circ}C$ and NASICON $CO_2$ gas sensors were fabricate. Oxidation mixing method showed better sensing properties at sintered $1100^{\circ}C$ result to NASICON electrolyte analyze with manufacture methods.

• Journal of Ocean Engineering and Technology
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• v.13 no.4 s.35
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• pp.98-104
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• 1999

The crank shafts need anti-corrosion materials. So STS 304 is the essential material to manufacture this shaft. However, it costs more to manufacture the shafts by using only STS 304 than welding of STS 304 to other carbon steels. And it has been difficult to weld this sort of dissimilar materials. They could be unstable in the quality by the conventional arc welding. And also they have a lot of technical problems in manufacturing. But by the friction welding technique, it will be able to be made without such problems. Then, this study aimed not only to develop the optimization of dissimilar friction welding of crank shafts steels of STS 304, SM35C, but also to develop the application technique of the acoustic emission to accomplish in-process real-time quality(such as tensile) evaluation during friction welding of the shafts by the AE technique.

• 유체기계공업학회:학술대회논문집
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• 2002.12a
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• pp.307-313
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• 2002

In the paper, the prototype development of a 75kW class microturbine for the distributed generation market is partly presented which has continued with the government funding. In the introduction, an overview of the development of microturbines in the world is presented. A series of development procedures are shown with design, manufacture and self-sustaining tests. During the first year, aerodynamic and structural design/analysis, mechanical design are performed for the compressor, the turbine and the combustor. A premixed lean burn combustor technology is used fur the low emission requirements. Foil air bearings and high-speed motors are employed for higher reliability. The self-sustaining conditions have been successfully achieved with the prototype manufactured engine as a preceding operation.

• Proceedings of the KSME Conference
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• 2001.06c
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• pp.189-196
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• 2001

Machine tools of high-speed and high-precision are required for various fields of industry such as semiconductor, automobile, mold fabrication and so on. Light-weight machine tool structure is essential for reduction of production time through rapid transportation. Also, high damping capacity of the structure is required to obtain precise products without vibration during manufacturing. Composite materials have high potential for machine tool structures due to its high specific stiffness and good damping characteristics. In this study, the design and the manufacture of a hybrid machine tool structure using composite materials was attempted and the damping capacity was investigated experimentally.

• Proceedings of the KSME Conference
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• 2001.06c
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• pp.275-280
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• 2001

Seismic isolator system is one of the most widely used base isolation system in order to control the vibration of structure against earthquake excitation. The evaluation of vulcanization time in molding the rubber bearing is very important for both proper ability of isolator and efficiency of manufacture. This paper deals with experimental measurement of temperature of isolator with senor inside in it, and compared with the result of FEA in order to evaluate the vulcanization time. Properties of rubber bearing which is used in the FEA are obtained by controlling the specific heat of rubber. With the obtained properties of rubber, the isolator is analysed by FEA. As a result, an appropriate analytical vulcanization time is obtained. This time is regarded as an appropriate temperature, which is used to effective manufacture.

• Journal of the Korea Furniture Society
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• v.16 no.1
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• pp.9-16
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• 2005

This study was carried out to displace traditional virgin wood fiber by exploded MDF-waste fiber for the manufacture of medium density fiberboard. MDF waste was exploded in condition of $215^{\circ}C,20$ minutes. The higher the mixing ratio of exploded MDF-waste fiber, the lower the MOR and IB of MDF. There was no difference of formaldehyde emission by desiccator method between virgin wood fiber and exploded MDF-waste fiber. Adding $25^{\circ}C$ of exploded MDF-waste fiber met the KS of MDF 15 type.

• Journal of Korea Society of Digital Industry and Information Management
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• v.5 no.3
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• pp.147-154
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• 2009

There are not much digital contents researches that do to culture relics basically. Digital contents research is studied by various method such as Cyber Gallery, 3-D Graphics, Hologram from Scanning that is the simplest form. This research wishes to do with internal culture relics as the central figure that it is that 'Sosu Seowon'. Korean culture contents cyber gallery construction can see as childhood yet. Present result that investigator develops research and as presentation about research process and contents result, wish to argue about problem. Digital contents escapes in existent physical time factor and development to new culture code is possible. Go and come often carrying out and search of fast data or experience of cultural inheritance is available. Through research, wished to present possible metheod actually in digital contents manufacture of internal cultural inheritance. Through this, expect role that offer base in contents manufacture skill.

• Journal of Korea Society of Industrial Information Systems
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• v.7 no.5
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• pp.159-166
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• 2002

Today print media survives in tough struggle for existence and is deep to development of new technology as well as edit style and manufacture environment improvement that utilize actively a computer to establish new phase, and Desk Top Publishing or information industry department and link development are required. Propose analysis and solution way that this paper is examining concept of electronic publishing and manufacture progress, and analyze reciprocity degree of electronic publishing process through active and cluster analysis, and electronic publishing knows.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.05a
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• pp.15-19
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• 2002

With the rapid development of industrial technologies, the demand for high precision products has been increasing drastically. For this reason, the need for developing of high performance machine tool, which can ensure high precision, is desired in the industrial fields. Technologies on the spindle system manufacture, guideway manufacture, error compensation, design of bed structure, protection against vibrations, and system integration are core technology for developing of high precision machine tools. Especially, among these, design of spindle system, which is leading precision and manufacturing technique. is one of the most important technologies. A high speed and high precision spindle system, which will be used for final machining of ferrule, is designed considering the effect caused by thermal, cutting torque, cutting farce, and work-piece materials. The detail process of analysis is presented.