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복합시스템을 위한 시스템엔지니어링 적용방안에 대한 연구
김종열,함범식,조태형,이범석,Kim, Jong Yoel,Ham, Bum Sik,Cho, Tae Hyoung,Lee, Bum Sug 한국시스템엔지니어링학회 2010 시스템엔지니어링학술지 Vol.6 No.1
This paper describes the application method of systems engineering for systems of systems and addressed the evolution in approach as organizations have evolved from standalone platform providers to architect of SoS. There is an increasing need to perform Systems of Systems Engineering(SoSE) in a global environment This has stimulated the development of new, innovative SoSE approaches that surpass current military and industry state-of-the-art systems engineering processes. The simple scaling of the former process was ineffective in dealing with global distributed large-scale integration efforts of network-centric systems of systems. A new SoSE process has been developed which is a significant breakthrough in the development of large complex systems and net-centric systems of systems. The SoSE process provides a complete, detailed and systematic development approach for military and civil SoS. In this point of view, this paper analyzes functionally the architecture framework, process and integrated verification & validation of SoSE. From results of this analysis, perspectives on the application of SoSE suitable for Korea aquisition environment are presented.
Structural design of transom pod for outboard motor in polyethylene boat
오정석,조석수,함범식 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.12
In a polyethylene boat, a transom pod is subjected to repeated thrust forces generated by an outboard motor. The structural design of the transom pod for the outboard motor must be considered because it is subjected to cyclic bending moments causing thrust forces of the outboard motor. We designed a transom pod reinforced with aluminum alloy plate inside the transom pod in a polyethylene boat and obtained an optimal thickness of the Al alloy plate to ensure the transom pod durability. We then performed a structural analysis for the transom pod reinforced with Al alloy plate and estimated the fatigue life using modified Goodman diagram. The optimal thickness of Al alloy plate was 7 mm.
조석수(Seok Swoo Cho),함범식(Bum Sik Ham),조영철(Young Chul Cho),곽원민(Won Min Kwak) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.5-3
Boat or yacht hull has been built mainly by FRP composite materials. FRP boat hull manufacturing begins to be restricted after 2000 under international regulation on ocean environment safety. Therefore, alternatives of FRP has been proposed by many boat builders and high strength aluminium is consdiered as its standard material. But, high strength aluminium is very expensive as boat hull material. In this study, Boat hull was built by high density polyethylene and its structural strength was estimated by longitudinal strength test method in small craft. Tensile strength of polyethylene boat hull material is less than tensile strength of FRP boat hull material. But Safety factor of polyethylene boat hull is more than safety factor of FRP boat hull. This results indicate structural integrity and quality control of polyethylene boat is better than FRP boat.
조석수(Cho, Seok-Swoo),곽원민(Kwak, Won-Min),함범식(Ham, Bum-Sik),조영철(Jo, Young-Chul) 한국산학기술학회 2013 한국산학기술학회논문지 Vol.14 No.3
플레저 보트나 요트는 FRP나 알루미늄으로 제작되고 있으나 FRP는 해양환경오염으로, 알루미늄은 낮은 가 격 경쟁력으로 인하여 해당 제품의 시장 지배력이 약화되고 있다. 따라서 본 연구에서는 선체를 폴리에틸렌으로 제작 하여 일본소형선박검사사무규정세칙에서 제안하고 있는 소형선체에 대한 구조 안전성 평가 방법을 통하여 폴리에틸 렌 선체의 구조 안전성을 확인한 결과, 폴리에틸렌 보트가 FRP 보트보다 매우 높은 구조 안전성을 보였다. Boat or yacht hull has been built mainly by FRP composite materials. FRP boat hull manufacturing begins to be restricted after the year 2000 under international regulation on ocean environment safety. The alternative of FRP has been proposed by many boat builders and high strength aluminium is considered as its standard material. But high strength aluminium is very expensive as boat hull material. In this study, boat hull is considered to be built by high density polyethylene and its structural strength is estimated by longitudinal strength test method on small craft. Tensile strength of polyethylene boat hull material is higher than that of FRP boat hull material. But safety factor of polyethylene boat hull is more than that of FRP boat hull. These study results indicate structural integrity and quality control of polyethylene boat is better than those of FRP boat.
조석수(Cho, Seok-Swoo),박찬균(Park, Chan-Kyun),백석흠(Beak, Seok-Heum),민경오(Min, Kyeong-Oh),함범식(Ham, Bum-Sik) 한국산학기술학회 2010 한국산학기술학회 학술대회 Vol.- No.-
선진국의 경우 무동력 수상 레저(Water leisure)분야에서는 카약(Kayak), 카누(Canoe)를 포함한 노 보트 종류가 가장 대중적인 상품으로 인식되고 있다. 특히, 국내의 경우 국민소득증가와 함께 보는 관광에서 체험관광으로 변화됨에 따라 수상레저상품에 대한 관심이 증가되고 있다. 또한, 한국은 2009년 말 해양레저활동이 가능한 마리나 사업을 발표함에 따라 수상레저참여인구의 폭발적 증가를 유도하고 있다. 한편, 국내 수상레저기구제작업체는 FRP 재료를 기반으로 하는 대량 생산 방법을 채택하고 있어 환경과 운영 및 관리에 어려움이 있어 새로운 재료를 이용한 제품에 대한 요구가 증가하고 있다. 본 연구에서는 수상레저기구중 가장 초보적인 제품인 카누를 친환경 소재를 이용하여 제작하고자 한다.