• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 춘계학술대회 논문집
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• pp.782-785
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• 2002

The goal of this research is to deduce the robust design of mold oscillator of the continuous casting machine. In the case of the system operated in the high temperature condition, the structural problems caused by the heat are dominant. Therefore, the thermal stress is considered with the connection of the thermal and structural analyses. The cooling ability of the water jacket was estimated and the robustness of mold oscillator was judged with the displacement and stress distributions obtained by the finite element method. The analytic results were compared with the real values of the iron mill.

• 한국콘텐츠학회논문지
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• 제13권3호
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• pp.43-53
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• 2013

본 논문은 스톱모션 애니메이션 제작에 실제로 사용 가능한 수준의 완성도 높은 퍼핏을 제작하기 위한 공정을 연구 주제로 하며 특히 그 핵심 과정이라 할 수 있는 몰드 제작과 캐스팅 과정을 자세히 다루고 있다. 단순 복제를 목적으로 하는 일반 몰드와 달리 내부에 아마추어를 정확히 고정시킬 수 있고 캐스팅 재료를 안정적으로 주입하거나, 고열의 오븐에 굽는 과정 등이 수차례 반복되는 캐스팅 작업을 견뎌낼 수 있도록 내열성과 내구성을 보강한 고강도 플라스터 몰드와 이중 구조의 재킷 몰드, 폼 라텍스를 재료로 한 캐스팅 과정을 소개한다. 실제 작업 과정에서 예상되는 문제점이나 전문 제작자들의 노하우, 재료 구매처 등을 포함한 작품 제작에 직접적인 도움이 되는 정보를 제공한다.

• Design & Manufacturing
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• 제10권2호
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• pp.18-23
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• 2016

Injection molded thermoplastic parts may need to be coated to facilitate paint adhesion, or to satisfy other surface property requirements, such as appearance, durability, and weather resistance. In this paper, a two-component polyurethane metering system was developed for the simultaneous injection and surface coating of a plastic substrate. The system was composed of storage tanks, feed pumps, axial piston pumps, mixing head. The tank was designed to be double-jacket structured and fabricated for polyol and isocyanate, respectively. A temperature chamber was used to maintain the material temperature to be $80^{\circ}C$ during flowing from storage tank to mixing head. Inside the chamber, feed pump, low pressure filter, high pressure pump, high pressure filter, pressure sensor, flow meter were installed. A mixing head of L-type was used for homogeneous mixing of polyol and isocyanate. Inside the mixing head, a cartridge heater and a temperature sensor were installed to control the temperature of the materials. The flow rate of axial-piston pump was controlled by using closed-loop feedback control algorithm. The input flow-rates were compared with the measured values. The output error was 6.7% for open-loop control, whereas the error was below 2.2% for closed-loop control. In addition, the pressure generated through mixing-head nozzle increased with increasing flow rate. It was found that the pressure drop between metering pump and mixing-head nozzle was almost 10 bar.

• 패션비즈니스
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• 제7권2호
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• pp.55-68
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• 2003

The purpose of this research is to expand the realm of a button for a decorative purpose through embossing the effect and gravity of a button in fashion by designing the new ceramic buttons which are mainly used for decorative function in costume. In order to acquire a motif for the design, I analyzed several works of Gustav Klimt. As the result, those feature can be classified into the use of decorative lines, mosaic forms, and harmony of golden yellow and black, and it can be applied to buttons and clothes design. The sort of clay used in manufacturing the ceramic buttons was white clay to have high density and to diffuse light well, and press shaping techniques using plaster mold were employed. The baking was performed in an electronic kiln at $800^{\circ}C$ for the first time and at $1250^{\circ}C$ for the second time. Based on wearable designs in 2002/2003 F/W Trend of Interfashion Planning, I made three pieces of dress which could express the button's capability of decoration with effect. This is expressing a simplified form which shows up in details of and yellow and red pink were used to harmonize with golden yellow clothes. As an application of shapes of foliage in I transformed its size and form to be consistent with a jacket and a tube top. To accord with golden beige costume, I made a curve, showing up in Klimt's paintings, with golden color on a circle shape which was also a main motif in his paintings.