http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김홍태(H. T. Kim),최혁진(H. J. Choi),이승현(S. H. Lee),박진형(J. H. Park) 한국해양환경·에너지학회 2004 한국해양환경공학회 학술대회논문집 Vol.2004 No.-
Marine risk assessment considers events such as collision/grounding, sinking/capsize, fire/explosion and flooding, developing relationships between their causes and effects. In addition, risk assessment of previously sunken ships are also necessary since they continuously have possibility for further oil spill or can cause other marine accidents. The objective of this paper is to develop the risk assessment systems for sunken ships to prevent oil spill and further marine causalities in order to preserve safe and clean oceans around Korea peninsula. The risk assessment systems for sunken ships comprise of database management sub-system for sunken ships, qualitative risk assessment sub-system, quantitative risk assessment sub-system, and cost-benefit analysis subsystem.
권용철(Y. C. Kwon),김상열(S. H. Kim),김홍태(H. T. Kim),문호근(H. K. Moon),이세희(S. H. Lee),정상인(S. I. Jeong),양재규(K. G. Yang),김상식(S. S. Kim) 한국소성가공학회 2013 한국소성가공학회 학술대회 논문집 Vol.2013 No.5
Main Shaft is one of the key components to connect between Rotor hub and Gear box in wind turbine. The mechanical components for wind turbine is most being manufactured with hot open die forging. The purpose of this study is to develop the manufacture process of Hollow Main Shaft by open die forging. In case of the open die forging for large forged part, pass schedule of manufacture process is most important because it can affect final dimensions of product. In this paper, hot compression tests were carried out to obtain the flow stress of cast microstructure at different temperature and strain rates. The measured flow stress dates were used to simulate the upsetting, piercing, pipe forging and final flange upsetting process of cast ingot using the practical material properties. Also the mechanical properties after forging of Hollow Main Shaft were investigated from the experiment. From the results, the prototypes of Hollow Main Shaft were manufactured based on analyzed results, productivity was stable, mechanical properties was increased and product dimension was optimized with suggested process. With FE-Analysis and prototype, the advantages of new method (hollow type) such as material utilization, mechanical properties and production cost were verified.
최혁진(H.J. Choi),김홍태(H.T. KIM),남택근(T.K. NAM),전상엽(S.Y. Jun),유정석(J.S. Yu) 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5
최근 우리나라 연안에서 발생한 허베이스프리트호 유류 유출사고와 천안함 침몰사고는 해양사고에 대한 체계적인 대응과 기술개발이 얼마나 중요한가를 일깨워 준 계기가 되었다해양사고 피해를 최소화하기 위해서는 평상시에 과학적이고 체계적인 신속 대응체계 구축과 초기 대응기술, 사고선박의 구난기술을 확보하파 구난 전문인력을 양성하는 것이 매우 중요하다 본 논문에서는 국내 민간 구난업체 실태 및 구난 기술동향 조사결과를 바탕으로 우리나라의 해양사고 대응능력과 사고선박의 구난기술 향상을 위한 방안을 제시하였다.