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RISS 인기검색어
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- 저자 : 차종한(Jonghan Cha) (검색결과 2 건)
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신뢰성 물리학을 활용한 유도탄 중앙처리보드의 신뢰성 설계 사례 연구
차종한(Jonghan Cha),이연호(Younho Lee),고호진(Hojin Koh),윤연아(Yeonah Yoon),조시현(Sihyeon Jo),김건우(Geonwoo Kim) 한국신뢰성학회 2022 신뢰성응용연구 Vol.22 No.2
Purpose: Recently, the importance of reliability design has emerged in domestic R&D projects. The goal is to increase the reliability of missiles via reliability physics analysis based on the physics of reliability. Methods: Reliability prediction results are confirmed by applying reliability physics analysis to CPU-board with high failure rate. Design alternatives are derived by reviewing methods for identifying vulnerable areas and improving their reliability. Results: The CPU-board reliability result was set as a baseline and design changes were performed to improve the reliability in vulnerable areas to confirm the results. A design plan that can satisfy the reliability goal was derived and presented by combining various plans. Conclusion: It was confirmed that the reliability prediction result applying the design alternative satisfies the reliability goal. This methodology is expected to be applied from the beginning of the design to ensure the risk and reliability of various tests and thus increase the availability of weapon systems.
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무기체계 운영유지비 산출을 통한 RAM-C 성장관리 연구
김경록(Kyungrok Kim),이기원(Kiwon Lee),정준(Jun Jeong),차종한(Jonghan Cha) 한국신뢰성학회 2021 신뢰성응용연구 Vol.21 No.2
Purpose: This study aims to realize RAM-C growth management by calculating the operation and maintenance costs of a weapon system. Methods: Considering the operation and maintenance costs of a weapon system to be the future estimates for the cost incurred in the operation and maintenance phase, the most appropriate simulation technique is applied. A simulation is designed to analyze the logistics of the weapon system based on the operation and maintenance concepts, and the outputs include the number of hours of operation and maintenance, spare part consumption, and ETC. The operation and maintenance costs are calculated by incorporating them in the formula for each item of the cost structure according to the corresponding simulation results. RAM-C growth management is analyzed for each stage of the weapon system design to ensure the maximum reliability and minimum cost. Results: RAM-C growth management of a weapon system can be examined by calculating the operation and maintenance costs through a simulation technique and hybrid model calculation method based on normalization Conclusion: The proposed method can facilitate the examination of RAM-C growth management in terms of the total life cycle cost, in contrast to the existing RAM growth management technique that is centered on the life/performance of weapon systems.
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