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최진형(J.H. Choi),이재민(J.M. Lee),도덕희(D.H. Doh),조효제(H.J. Jo),Kiyomi Suzuki,Shinji Kato 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
Characteristics between the loads and the three-dimensional flow behaviors of a fish-shape power generating system have been investigated. The constructed system have been tested under the current speed 1.5knot. The flow features of three fish models (horse mackerel, mackerel, perch) has been tested. The width of the blade installed around the body is 50㎜. The flows around the models have been investigated by using 3D-PTV. Further, the load test has been carried out at the same flow conditions. Among the models it has been verified that the S65 is most appropriate for power generations.
박철우,이종항,최진형,유성만 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-
This paper describes the design and manufacturing of a focused-ion-beam machining system which can make small features of nano size. We use a SIMION simulator in order to obtain the design data of an ion column. The simulation result shows that the focal length of ion beam decreases as the applied voltage of object lens increases. Finally, we obtained the good images of a mesh of 50 micrometers by using the adjustment of applied voltage, acceleration power, and dimension of each elements.