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AMESim을 이용한 유압 실린더의 쿠션 특성에 관한 연구
최종섭(J. S. Choi),김정훈(J. H. Kim),주봉환(B. H. Joo) 한국트라이볼로지학회 2010 한국트라이볼로지학회 학술대회 Vol.2010 No.11
Hydraulic cylinder gets a big shock by acceleration when the piston comes at end position. In order to absorb this shock, we are looking for in Cushion Mechanism. Also, the cushion of cylinder has a great effect on the operator's comfortable. In this study, we have done a comparative analysis result through AMESim and experimental result that occurs on a cylinder moving excavator.
진공증착법으로 제조된 Al-Cr 박막의 내식성에 관한 연구
권식철,주봉환,이규환,백운승,임수근 대한금속재료학회(대한금속학회) 1994 대한금속·재료학회지 Vol.32 No.4
The corrosion and the microstructural properties of evaporated Al-Cr films on the steel strip by two-source evaporator have been investigated. The corrosion resistance of Al-Cr coated steel was evaluated by the salt spray test as well as the anodic polarization test in 0.1N NaCl. Porosity of coated Layer was also compared with the corrosion resistance property. Corrosion resistance was improved with increasing the Cr content in Al-Cr films, and it was the maximum in the Cr content of 10 to 15wt%. However, corrosion resistance was decreased over 15wt% of Cr content films, it was thought to be due to porous microstrucute resulting from the formation of intermetallic compound phases.