• 지질공학
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• 제10권2호
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• pp.113-133
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• 2000

토목 구조물의 합리적인 설계를 위한 지반조사의 역할은 대상 구조물의 최적 위치를 설정하는 일에서부터 시공 방법의 선정이나 안정성을 확보하는 일에 이르기까지 필요한 각종 정보를 제공하는 것이다. 인간 생활 환경의 확대에 따라 불리한 지반 조건에 공사를 수행하여야 하는 경우가 점차 많아지고, 이에 따라 발생하는 문제에 있어서는 다양하고 복잡하여 이를 해결할 수 있기 위해서는 토목 시공뿐만 아니라 지반 자체에 대한 폭넓은 이해가 필요하게 되었다. 이에 본 고에서는 여러 가지 지질 구조 중 토목 구조물의 안정성에 가장 크게 영향을 미치는 단층과 관련된 여러 가지 사례를 소개하였으며 각 사례에 있어서 단층에 대한 대책을 분석, 요약하였다.

• 복식
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• 제66권8호
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• pp.123-137
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• 2016

Sa-ryae-pyeonram [四禮便覽], which was published in the late Joseon Dynasty, was representative reinterpretation book of Ga-ryae [家禮] and it was a widely used and cited in the late Joseon Dynasty. This book contains Confucian values about the ritual of Confucian scholars of Joseon Dynasty. This study is a description of historical investigation and production of men's mourning dress based on Sa-ryae-pyeonram [四禮便覽] the result, of the study shows empirical attitude of Confucian scholasr in the late Joseon Dynasty. Through industrialization, traditional culture has been able to survive through preservation. Wearing the traditional mourning dress is not the only way to embody the traditional values in the modern society. It is will be necessary to study contemporary mourning dress as a reflection of traditional value.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 1999년도 추계학술대회논문집
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• pp.45-48
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• 1999

The optimal blank design method by sensitivity analysis has been applied to the formings of oil-pan, tailored blank and front panel have been chosen as the examples. Die shape is prepared by a commercial CAD system. Excellent results has been obtained between the numerical results and the target contour shapes. Through the investigation, the proposed systematic method of optimal blank design is found to be effective in the practical forming processes.

• 소성∙가공
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• 제9권3호
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• pp.226-232
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• 2000

The optimal blank design method by sensitivity analysis has been applied to the formings of oil-pan, tailored blank and front panel as the examples. Die geometry is prepared by a commercial CAD system. Excellent results has been obtained between the numerical results and the target contour shapes. Through the investigation, the proposed systematic method of optimal blank design is found to be effective in the practical forming processes.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 추계학술대회 논문집(II)
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• pp.123-128
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• 2003

The first design elements of horizontal alignment are very important things for improvement or movement in Railway. When the design elements are lost or damaged, it is necessary to recalculation. In this paper, an investigation is made on the method of representation of horizontal alignment as a result of design element using GPS method. The results show that northing calculated about $2\~10$ meters and easting calculated about $0\~7$ meters between calculated and design data in center points.

• International Journal of Automotive Technology
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• 제8권3호
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• pp.275-281
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• 2007

GTL (Gas To Liquid) has the potential to be used in diesel engines as a clean alternative fuel due to advantages in emission reduction, particularly soot reduction. Since the physical properties of GTL fuel differ from those of diesel fuel to some extent, studying how this difference in characteristics of GTL and diesel fuels affects spray and combustion in diesel engines is important. In this study, visual investigation of sprays and flames from GTL and diesel fuels in a vessel simulating diesel combustion was implemented. The effects of various parameters and conditions, such as injection pressure, chamber temperature and pilot injection on liquid-phase fuel length and auto-ignition delay were investigated. It was determined that GTL has a somewhat shorter liquid-phase fuel length, which explains why there is less contact between the fuel liquid-phase and flame for GTL fuel compared to diesel fuel.

• 전기학회논문지
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• 제57권4호
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• pp.603-609
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• 2008

Slotless linear brushless DC motor are widely used in precision machine applications because of their advantages such as low of detent force, negligible iron loss. But they have a disadvantage such as low thrust density, thrust ripple, and excessive use of permanent magnet materials. These lead to undesirable performance and high production cost. In this paper, we deal with the design and characteristics investigation of a air-core tubular linear brushless DC(TLBLDC) motor with air-core stator and permanent magnet mover. And to investigate the static and dynamic characteristics of air-core TLBLDC motor, the prototype machine is manufactured and analyzed by F.E.M. and Matlab simulink simulations. Especially, dynamic characteristics of air-core TLBLDC motor driven with 6 step inverter are simulated by F.E.M.coupling with external circuit and Matlab simulink program, and measured for the prototype motor. The simulation results are compared to the experimental results such as current waves, thrust and speed curve.

• 화약ㆍ발파
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• 제12권1호
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• pp.32-38
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• 1994

This study Is to summarize the contents for the investigation and design of the construction for oil storage. Since underground caverns are large scale, in their construction one should consider the mechanical stability of cave·rns and the economic view of construction. On the basis of them, cavern's section and layout were determined and water curtains were designed to maintain hydraulic equilibrium so that gases were sealed tightly. Also the supporting criteria for rock bolt and stotcrete were determined by means of the classification of rock masses and the results of finite element method. The criteria of grouting reinforcement were presented according to the results of injection test in the pilot holes of working face.

• 터널과지하공간
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• 제2권2호
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• pp.190-198
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• 1992

This study is to summarize the contents for the investigation and design of the construction for oil storage. Since underground caverns are large scale, in their construction one should consider the mechanical stability of caverns and the economic view of construction. On the basis of them, cavern's section and layout were determined and water curtains were designed to maintain hydraulic equilibrium so that gases were sealed tightly. Also the supporting criterial for rock bolt and stotcrete were determined by means of the classification of rock masses and the results of finite element method. The criteria of grouting reinforcement were presented according to the results of injection test in the pilot holes of working face.

• Structural Engineering and Mechanics
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• 제7권5호
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• pp.433-445
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• 1999

Sandwich panels comprising steel facings and a polystyrene foam core are increasingly used as roof and wall claddings in buildings in Australia. When they are subjected to loads causing bending and/or axial compression, the steel plate elements of their profiled facing are susceptible to local buckling. However, when compared to panels with no foam core, they demonstrate significantly improved local buckling behaviour because they are supported by foam. In order to quantify such improvements and to validate the use of available design buckling stress formulae, an investigation using finite element analyses and laboratory experiments was carried out on steel plates that are commonly used in Australia of varying yield stress and thickness supported by a polystyrene foam core. This paper presents the details of this investigation, the buckling results and their comparison with available design buckling formulae.