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신규 지상무기체계 RAM 목표값 설정 방법론에 관한 연구
안남수(Namsu Ahn),조성식(Seongsik Jo) 육군사관학교 화랑대연구소 2021 한국군사학논집 Vol.77 No.2
The reliability, availability, and maintenance of RAM are measures that are continuously managed from the raising the requirements of the weapon system to disposal. Also, setting the appropriate target RAM value is important because it affects performance, development cost, and development period. Currently, ROK military uses OMS (Operation Mode Summary) to set the target RAM value, and this study aims to point out the limitations of such research methodology and suggest an alternative. First, we proposed to investigate the training time of several units, including units known to have the highest possible training intensity, as the mission and training conditions for each unit are different. After then, we tried to propose a more reliable value through estimation of the confidence interval. Finally, the results of applying this methodology to a new ground weapon system that is actually being developed are presented together.
조재천(Jaecheon Jo),문남수(Namsu Mun),이기주(Kiju Lee),한인수(Insu Han),김종일(Jongil Kim),김희진(Heejin Kim) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Failure of the exhaust pipe can cause air pollution by reducing ability of exhaust gas purification and can cause noise pollution and ride degradation by reducing ability of noise isolation. Therefore, it should ensure high reliability of the product to meet the growing environmental regulations and the needs of consumers. However, under actual conditions of use, it spends a lot of time and cost in order to develop products of high reliability. Therefore, accelerated life test to estimate the relationship between stress and life is performed to predict the actual life from the observed data through tests of the product by promoting the failure of products in severe conditions than real use conditions. The purpose of this study is estimating lifetime of exhaust pipes through accelerated life test and to evaluate average life, failure rate and etc. in short term.