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Bi-arc법을 이용한 평면 캠의 정밀 가공 기술에 관한 연구
신중호(J. H. Shin),권순만(S. M. Kwon),조인영(I. Y. Cho),김종찬(J. C. Kim),강한성(H. S. Kang) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
The disk cam mechanism can produce a positive motion with relatively few components. This paper introduce a shape design of cam using the relative velocity method and a precision machining technology for using Bi-arc method. The paper gives a machining information at each point using the Bi-arc method and the analysis method of the cutting error due to the moving path of the cutter, so that we can lead to the optimum design in a disk cam mechanism.
X선 조사에 의해 (Ba, Sr) FBr : Eu 형광 물질에 생성되는 결함 특성
신중기,이종용,배석환,김재홍,권준현,Shin, Jung-Ki,Lee, Chong-Yong,Bae, Seok-Hwan,Kim, Jae-Hong,Kwon, Jun-Hyun 한국재료학회 2008 한국재료학회지 Vol.18 No.8
The mechanical property of a phosphore layer was investigated by measuring the resolution (LP/mm) and by positron annihilation spectroscopy and SEM. Image plate samples containing the phosphore layer were irradiated by X-rays in a hospital numerous times over a course of several years. The LP/mm values of a (Ba,Sr)FBr : Eu image plate irradiated by X-rays varied between 2.2 and 2.0 over a period of four years. Coincidence Doppler Broadening (CDB) positron annihilation spectroscopy was used to analyze defect structures. The S parameters of the samples from hospital use varied from 0.6219 to 0.6232. There was a positive relationship between the time of exposure to the X-rays and the S parameters. Most of the defects were found to have been generated by X-rays.