• The KSFM Journal of Fluid Machinery
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• v.5 no.4 s.17
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• pp.61-66
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• 2002

• The KSFM Journal of Fluid Machinery
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• v.5 no.4 s.17
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• pp.103-110
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• 2002

• 유체기계공업학회:학술대회논문집
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• 2002.12a
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• pp.169-174
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• 2002

본 자료는 송풍기 공조분야 및 산업용 분야의 업계현황과 기술 동향을 분석하여 앞으로의 방향을 모색하는데 도움을 주고자 자료를 정리하였다.

• Journal of the KSME
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• v.46 no.5 s.306
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• pp.37-43
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• 2006

이 글에서는 차세대 성장동력 기술인 지능형 로봇 산업의 구체적인 현황, 그리고 이 분야의 지속적이고 체계적인 발전을 위해서 산업자원부에서 추진하고 있는 발전 계획과 비전에 대해서 소개한다.

• Journal of the KSME
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• v.46 no.5 s.306
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• pp.50-55
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• 2006

이 글에서는 세계적인 로봇공학의 발전 추세를 구체적으로 살펴보고 향후 지능로봇이 어떤 분야에서 어떤 역할을 하게 될지 예측해본다. 그리고 우리나라의 로봇기술 발전 방향을 짚어보고, 구체적인 연구 기술 개발분야를 살펴본다.

• Journal of the KSME
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• v.50 no.10
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• pp.33-36
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• 2010

2만 7,000개 자동차 부품소재의 품질 향상이 완성차 성능향상과 연동되듯 부품소재 기업의 경쟁력 향상은 한국 자동차산업의 경쟁력 향상으로 이어지며, 이러한 경쟁력 향상의 핵심동력은 상생협력이다.

• Journal of Drive and Control
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• v.12 no.4
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• pp.96-100
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• 2015

• Polymer(Korea)
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• v.26 no.1
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• pp.139-144
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• 2002

In this study, the PPS/ABS blend system was investigated in order to identify the relationship between the incorporation of compatabilizing moieties and the mechanical properties. ABS resin was chemically modified by the incorporation of maleic anhydride using reactive extrusion method to yield MABS resin, and PPS/MABS blend was prepared by a twin screw extruder. Single glass transition behavior was observed in the various compositions of PPS/MABS blend by dynamic mechanical analysis study. Upon the examination of the mechanical properties, the PPS/MABS blend exhibited an enhanced tensile, flexural and impact strength, which might be due to the better chemical compatibilization to result in the reduced interfacial tension between each components.

• Journal of ILASS-Korea
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• v.27 no.4
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• pp.195-202
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• 2022

Recently, the global automobile market is rapidly changing from internal combustion engine vehicles to eco-friendly vehicles including electric vehicles. Among eco-friendly vehicles, LPG vehicles are low in fine dust and are suggested as a realistic way to replace diesel vehicles. In addition, it is more economical than gasoline in its class, showing a cost-saving effect. In Korea, the business of converting gasoline into LPG is active. Research is being conducted to apply this to hybrid vehicles. In this study, the difference in energy consumption efficiency was analyzed when LPG fuel was applied by selecting a 2-liter GDI hybrid electric vehicle. The operation of the hybrid system according to various driving characteristics was confirmed by selecting the WLTC mode. As a result, it was confirmed that the BSFC was about 5% lower than that of gasoline fuel when using LPG fuel. This is due to the active operation of the motor while driving. Optimization is required as battery consumption increases from an energy perspective.

• Journal of Hydrogen and New Energy
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• v.33 no.6
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• pp.819-826
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• 2022

Fuel cell systems are being supplied to households and buildings to reduce greenhouse gases. The fuel cell systems have problems of high cost and slow startup due to fuel processors. Greenhouse gas reduction of the fuel cell systems is also limited by using natural gas. The problems can be solved by using a hydrogen generator consisting of a reformer and pressure swing adsorption (PSA). However, part load operation of the hydrogen generator is required depending on the hydrogen consumption. In this paper, PSA operation strategies are investigated for part load of the hydrogen generator. Adsorption and purge time were changed in the range of part load ratio between from 0.5 to 1.0. As adsorption time increased, hydrogen recovery increased from 29.09% to 48.34% at 0.5 of part load ratio. Hydrogen recovery and hydrogen purity were also improved by increasing adsorption and purge time. However, hydrogen recovery dramatically decreased to 35.01% at 0.5 of part load ratio.