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자기장 병목현상 해소를 통한 전자 클러치의 성능향상에 관한 연구
김신호(S. H. Kim),정태휘(T. W. J),김기수(K. S. Kim),조중선(J. S. Joh) 한국정밀공학회 2005 한국정밀공학회 학술발표대회 논문집 Vol.2005 No.10월
This paper presents a method of improving performance of an electromagnetic clutch for the next generation tank gun. One of the most important things in the design of the clutch is to satisfy the requirement for the maximum torque even if the torque is varied. To achieve this requirement, it is needed to expand the operation range of the torque. Consequently, we have performed shape changes in order to cancel magnetic flux bottlenecks on the magnetic path. Simulation results from the finite element method show that the method proposed in this paper is proper for the clutch.
김신호(S-H Kim),정선환(S-H Cheong),최성대(S-D Choi),홍영배(Y-B Hong) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-
This study involves the development of a flow control system to be used to supply photo-resist in the semi-conductor manufacturing process, this system features the measurement of high viscosity and micro flow. Flowmeter which measures high viscosity together with micro flow had not been fully developed until now. Thus this paper aims to achieve this objective likewise, optimum condition in the present PR-process will also be determined.
홍영배(Y-B Hong),최성대(S-D Choi),정선환(S-H Cheong),김신호(S-H Kim) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-
Quartz glass are used in semiconductor industries as the reaction furnace, wafer carrier and accessaries. During the process the surface of quartz glass received compression by direct contact with other quartz glass and metal as the form of weight pressure and vacuum pressure with thermal and mechanical vibration caused by process. Even as the other ceramic materials quartz glass have high compressive strength but often there happened crack and breakage of quartz glass resulted in a great damage in the process. In this paper investigation will be carried out on fracture behavior of quartz glass under compression to give guideline to prevent unintended fracture of quartz glass.