• Title, Summary, Keyword: State of Manufacture

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Structural Characteristics of Fatty Acid Thin films (지방산계 박막의 구조 특성)

  • Jung, You-Ra;Choi, Yong-Sung;Hwang, Yong-Sun;Lee, Kyung-Sup
    • Proceedings of the KIEE Conference
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    • pp.33-36
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    • 2009
  • In this paper, evaluation of physical properties was made for dielectric relaxation phenomena by the detection of the surface pressures and displacements current on the monolayer films of fatty acid monomolecular Arachidic Acid, Stearic Acid using compressing velocity. LB(Langmuir-Blodgett) thin films were manufacture by detecting deposition for the accumulation and the current was measured after the electric bias was applied across the manufactured MIM device. The physicochemical properties of the fatty acid monomolecular Arachidic Acid, Stearic Acid films surface structure has been studied by AFM. We give pressure stimulation into organic thin films and then manufacture a device under the accumulation condition that the state surface pressure is gas state, liquid state, solid state. Formation that prevent when gas phase state and liquid phase state measure but could know organic matter that molecules form equal and stable film when molecules were not distributed evenly, and accumulated in solid state only.

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Study on the implementation of malfunction, defect and failure reporting system to the korean indigenous aircraft (국내 개발 항공기에 대한 항공안전 고장보고 제도운용에 대한 고찰)

  • Park, Guen-Young;Yoo, Seung Woo
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.24 no.1
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    • pp.33-40
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    • 2016
  • ROK issued its first type certificate to the KC-100 airplane, Part 23 normal category, and become the State of Design (SoD) in 2013. Before this, ROK aviation regulations were focused on the operation and continued airworthiness of aircraft registered and operated in ROK that were designed and manufactured in another contracting state. Therefore the implementation of reporting system were restricted to gather the failure and service difficulty reports from the owners or operators and transmit the information to the State of Design and/or the manufacture relating to the type certificated aircraft. However, ROK, to fulfill the accountability of the State of Design, has to ensure there is a system to address the information received from the State of Registry on failure, malfunctions, defects and other occurrences that might cause adverse effects on the continuing airworthiness of the korean type certificated aircraft. This paper presents an overview of ICAO requirements for the State of Design, and current implementation of reporting system of USA and Japan and discusses the current status and further considerations on the rule-making for the malfunction, defect and failure reporting system applicable to the korean indigenous aircraft.

A Study on Optimal Design of Polymer Extruder Dies by CFD (CFD를 이용한 고분자 압출기 Dies 최적설계에 관한 연구)

  • Kim, Jea-Yoel;Choi, Jin-Ho
    • Journal of The Korean Society of Manufacturing Technology Engineers
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    • v.18 no.6
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    • pp.585-589
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    • 2009
  • Extruder is divided to greatly three part at extrusion process. First, by hopper(Hopper) second, barrel(Barrel) with Screw that is point of extruder and third that is raw material supply wealth extrusion into dies(DIES) Part that decide shape of do product greatly divide. Hopper is role that distribute in raw material supply wealth (Feeding zone) of Screw preserving raw material in state of high quality how at extrusion process, and make distributed raw material as Screw in barrel rotates and 3 stage and inflicting heat and pressure raw material melting(Melting) state. And raw material of melting state Screw's measuring stoker(Metering zone) whereabouts anaphora do and product is completed through pipe channel of dies. Dies that is the most important as Screw in extrusion is part that is last part of melting state process of raw material and causes huge effect in quality of product. If more than design of dies happens, manufacture itself of dies is hard, but there are a lot of amount of losses accordingly. In this research, make pipe channel that raw material of melting state flows in dies can present dies basic design method through flow analysis of ideal pipe channel using CFdesign.

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New Techniques for Fabrication of Flexible Plastic LCD's

  • West, John.L.;Novotny, Grea R.;Fisch, Michael R.;Heinman, David
    • Journal of Information Display
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    • v.2 no.4
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    • pp.15-18
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    • 2001
  • We report simple techniques to manufacture low-powered, high-resolution, reflective cholesteric displays using flexible plastic substrates. We use wax transfer printing to replace photo-lithography and incorporate polymer walls to increase the mechanical strength and lifetime of the displays. These printing methods can easily be adapted to roll-to-roll production.

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Industrial Structure and Development of Welfare State : Using Fuzzy-set Analysis (산업구조와 복지국가 발달 관계에 관한 연구 : Fuzzy-set 질적 비교분석을 활용하여)

  • Jung, Yuiryong
    • The Journal of the Convergence on Culture Technology
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    • v.5 no.1
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    • pp.27-36
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    • 2019
  • The industrialization theory that industry and economic development of country has an important influence on the development of the welfare state had become a major theory explaining the development of the welfare state. However, the theory of industrialization faced criticism that the size of public welfare was relatively weak even in advanced industrial countries where industrialization developed. To complement and explain these limitations, The theory of democracy that the welfare state could be expanded as a strategy for election competition, and the theory of power-resources theory that welfare states could develop when the power of unions and left parties demanding welfare states were strengthened. This study uses Fuzzy-set analysis for the data of OECD countries adding industrial structure variables to existing theory of the development of welfare state. The result suggests that the proportion of manufacture such as industry structure of country is important for the development of welfare state.

Electrical Properties by Organic Thin Films According to Manufacture Condition (제작조건에 따른 유기박막의 전기특성)

  • Song, Jin-Won;Lee, Kyung-Sup
    • Proceedings of the KIEE Conference
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    • pp.467-469
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    • 2000
  • We give pressure stimulation into organic thin films and then manufacture a device under the accumulation condition that the state surface pressure is 20[mN/m]. LB layers of Arac. acid deposited by LB method were deposited onto Y-type silicon wafer as x, y, z-type film. In processing of a device manufacture, we can see the process is good from the change of a surface pressure for organic thin films and transfer ratio of area per molecule. The structure of manufactured device is Au/arachidic acid/Al, the number of accumulated layers Also, we then examined of the MIM device by means of I-V. The I-V characteristic of the device is measured from 0 to +2[V].

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A Design and Manufacture of the Composite Blade for the Hingeless Rotor System of Unmanned Helicopter (무인헬기용 힌지없는 로터시스템의 복합재료 블레이드 설계 및 제작)

  • Sim, Joung-Wook;Kee, Young-Jung;Kim, Deog-Kwan;Kim, Seung-Bum;Byun, Seong-Woo
    • Proceedings of the Korean Society For Composite Materials Conference
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    • pp.213-216
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    • 2005
  • This paper describes the design, analysis and manufacture procedure of the composite blade for hingeless rotor system of unmanned helicopters. Helicopter rotor system is the key structural unit that produces thrust and control forces for intended flight conditions. In this work, a hingeless rotor system is adopted, and base on the design requirements for rotor system, composite blade section design and calculation of material properties were performed. In order to avoid the unstable state such as resonance, vibration characteristics of rotor system were analyzed. Finally, this paper describes simply the forming and manufacture of composite blade.

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Structural Characteristics of Fatty Acid Thin films (유기절연박막의 알킬체인 길이에 따른 전기적 특성)

  • Jung, Jong-Chul;Choi, Yong-Sung;Hwang, Jong-Sun;Lee, Kyung-Sup
    • Proceedings of the KIEE Conference
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    • pp.37-39
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    • 2009
  • The physicochemical properties of the fatty acid monomolecular Arachidic Acid, Stearic Acid films surface structure has been studied by AFM. We give pressure stimulation into organic thin films and then manufacture a device under the accumulation condition that the state surface pressure is gas state, liquid state, solid state. Formation that prevent when gas phase state and liquid phase state measure but could know organic matter that molecules form equal and stable film when molecules were not distributed evenly, and accumulated in solid state only.

  • PDF