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3차원 휴먼 시뮬레이션을 이용한 세일링 요트의 거주구역 설계 및 검증
민경철(Kyong-Cheol MIN) 한국수산해양교육학회 2017 水産海洋敎育硏究 Vol.29 No.5
In this study, three-dimensional human simulation has been performed to verify and design for the accommodation area of cruiser/racer sailing yacht. The leisure boat sells the finish product. Accordingly, the exterior and interior design are very important as the needs of various consumers could be satisfied. The beautiful exterior and the cabin space are the most effective method to raise the value of goods on the leisure boat. And the sailing yacht in the leisure boat must satisfy IMS regulation to join a sailing yacht race. In order to design the cabin space whether the accommodation is suitable in the IMS regulation sailing yacht, I used the digital human model in present paper. As a result, the cabin space which is designed satisfied the IMS regulation.
3차원 휴먼 시뮬레이션을 이용한 선박생산공정의 근골격계질환 감소방안 연구
민경철(KYONG-CHEOL MIN),김동준(DONG-JOON KIM) 한국해양공학회 2008 韓國海洋工學會誌 Vol.22 No.5
Musculoskeletal disorders(MSDs) are one of the major issues in shipbuilding industry. Main risk factors of MSDs include manual handling of heavy weight, awkward posture, repetitive tasks, prolonged static muscle contraction, and so on. In this study, Using the three-dimensional digital human modeling and simulation method we made up a worker and work posture on a virtual environment. To verify this simulation we compared both traditional ergonomic analysis on a real worker and digital program analysis on a digital human. And this paper shows that it is possible to reduce the rate of MSDs in the shipbuilding industry because it means we can change poor posture and surroundings into better ones.
Poly-DCPD 함유 에폭시수지의 제조 및 기계적 특성 연구
이종근(Jong-Gun LEE),민경철(Kyong-Cheol MIN),한승재(Seung-Jae HAN) 한국수산해양교육학회 2017 水産海洋敎育硏究 Vol.29 No.5
For the purpose of development of DCPD epoxy resin for small boats, the effect of additives on the impact strength, flexural strength and surface hardness of the poly-DCPD epoxy resin were systematically investigated. Curing agents, G-5022 and G-0930 were adapted and used separately and together. The effects of curing agents, their added amount, and synergic effect of curing agents were experimentally examined. The impact strength and flexural strength as the usage increases the curing agent was increased, but the theoretical amount of 1.6 times or more showed consistent results. and, curing agent G-0930 was impact strength, G-5022 was flexural strength showed of high value. The optimum conditions were curing agents mixture(G-0930:G-5022) in a weight ratio of 50:50, added amount of 1.6 times, curing temperature 50℃, which is a curing time of 24 hours. Impact strength, flexural strength and surface hardness was in this condition.
Tendon의 강성변화에 따른 TLP의 동적응답특성 연구
이승철(Seung-Chul LEE),민경철(Kyong-Cheol MIN),하영록(Young-Rok HA) 한국수산해양교육학회 2018 水産海洋敎育硏究 Vol.30 No.5
In recent years, the main area of oil and gas production in the ocean has been expanded to more than 500meter deep sea. Among the representative offshore structures that have excellent working performance even in the rough sea, there is the Tension Leg Platform. Because the Tension Leg Platform is required to perform work in extreme marine conditions, precise motion and structural analysis is required to ensure the stability and continuous operation of the structure. In this paper, we evaluate and compare responses of the motion and the tension of tendons for a Tension Leg Platform, according to the effect of stiffness change of mooring tendon. Under the numerical conditions of this work, the motion responses of heave and roll that cause relative displacement in the vertical direction were largely affected by the stiffness change of the tendon in all region of wave period. On the other hand tension responses were also affected getting towards the lower region of wave period. This numerical method will be a good scheme to determine the specifications of tendons in the initial design step of a Tension Leg Platform.
Poly-DCPD 함유 에폭시 수지의 내마모성 특성 연구
이종근(Jong-Gun LEE),한승재(Seung-Jae HAN),하영록(Young-Rok HA),민경철(Kyong-Cheol MIN),김인철(In-Chul KIM) 한국수산해양교육학회 2018 水産海洋敎育硏究 Vol.30 No.3
The properties of impact strength, flexural strength, surface hardness, and lubrication friction wear and non-lubrication wear were measured by using the poly dicyclopentadiene(Poly-DCPD) type epoxy resin, the inorganic filler-composite epoxy resin, and the polytetrafluoroethylene(PTFE). Impact strength, flexural strength and surface hardness of Poly-DCPD type epoxy resin were superior to those of PTFE when the hardeners of G-5022 and G-0930 were mixed at the weight ratio of 50:50 than when only one type of hardener is used. Poly-DCPD type epoxy resin composites showed the highest properties when using Cu₂O and CuO as inorganic additives, and the lowest properties in case of using CaO. In the amount of lubricating oil absorption, PTFE showed the highest amount of lubricating oil absorption with 0.006g than both the composits using Cu₂O and CuO as additives and the Poly-DCPD type epoxy resin using hardener(G-5022:G-0930=5:5). In the amount of lubrication friction wear, the wear amount of PTFE failed to form a lubricating film was increased by 0.008g compared to composite materials containing Cu₂O and CuO. In the non-lubricated friction test, composite materials using Cu₂O and CuO as additive showed the least amount of wear. In wear amount, the Poly-DCPD type epoxy resin showed similar to G-5022 and G-0930, and PTFE gradually increased after 1 km.
3D 휴먼 시뮬레이션을 통한 세일링 요트 윈치 배치 설계 연구
송연희(Yeun-Hee Song),김동준(Dong-Joon Kim),장성록(Seong Rok Chang),이유정(Yujeong Lee),민경철(Kyong-Cheol Min) 한국해양공학회 2017 韓國海洋工學會誌 Vol.31 No.6
Unlike other leisure boats, a sailing yacht is propelled by wind power using sails that are controlled by the crew. Therefore, the ergonomic design of the equipment that the crew has to operate for sailing might be very important. However, it is difficult to find design rules and regulations for the equipment arrangement of a sailing yacht based on ergonomics. In this study, the arrangement design for the height and side plate angle of a winch for a sailing yacht was examined from an ergonomic design point of view. In a simulation, a Korean male in his 20s was selected as a human model for a grinder. The physical load was analyzed when he was operating a winch using a 3D human simulation. The lower back load showed the highest value when using the grinder at 90° and 180°. Based on the results for the lower back load when using the grinder with various winch heights, it is suggested that the winch height from the cockpit floor to the top of the winch should be more than 40% of the height of the human operator. In addition, according to the results for the lower back load with various horizontal distances from the body, it is suggested that the side plate angle should be less than 16°.