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유비쿼터스 기술을 이용한 프레스 금형의 트라이아웃 관리시스템
최상수(SangSu Choi),양태호(TaeHo Yang),노상도(Sang Do Noh),진희주(HeeJu Jin),이용한(Yong-Han Lee),이인석(Inseok Lee),권성오(Sungoh Kwon) (사)한국CDE학회 2009 한국CDE학회 논문집 Vol.14 No.5
In these days, automotive companies are trying to develop new manufacturing technologies and paradigms for rapid product development and production. The press die development process account for 40% of entire vehicle development process, and tryout process usually takes 3 to 4 months, and it is the biggest time portion out of dies manufacturing. Therefore, the effective tryout management system is essential to reduce time and cost of automotive press die production. This paper suggests improved process and practical application of tryout management using ubiquitous technology, and shows the results such as shorten time, improved quality and supporting of lifecycle engineering of press die.
최상범(S. B. Choi),조대환(D.H. Cho),봉태근(T.G. Bong) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
A flow field around submerged vertical plate is investigated experimentally. Vortices are generated at the tip of each side of the plate. The largest vortices at each side of the plate eventually grow to the size of the water depth. The vortex shedding process can be divided into three phases: the formation of a separated shear layer, the generation and shedding of vortices, the formation of a vortex, and the impingement onto the upper flow.