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정나현(Na-Hyeon Jung),김지영(Ji-Young Kim),박지희(Ji-Hee Park),양일영(Il-Young, Yang) 한국신뢰성학회 2020 한국신뢰성학회 학술대회논문집 Vol.2020 No.7
Purpose : In a general case, the life test could designed based on the failure mode and mechanism of components and materials or field failure cases. However, it is difficult to predict which components or parts could cause failure of an assembly in case of a new developed product or assembly that combined many different components and materials. Therefore, in this paper we studied the life test for the new developed assembly A that combined many electronic components. Methods : It is important for the life test design to choose an effective stress of the assembly A. The effective stress factor selecting is most important especially when we could not know the failure mode and mechanism. In this paper, the effects of every possible stresses were analysed using QFD(Quality Function Deployment) method. Temperature difference between ground and high altitude was found as the effective stress of the assembly A. To accelerate temperature difference we designed the life test that accelerated the life cycle. Result : The life test was designed for the new developed assembly A and the failure were found in every samples at the similar test step. Samples were three. The fault was not occurred the specific component but the connect part that connect between two circuit cards. We predicted the MCBF(Mean Cycle Between Failure) of the assembly A using every samples’ failure cycles based on a statistical analysis. Conclusion : In this paper the life test design was analysed and done for the assembly A which combined many electronic components. It is difficult to generalized the life test method for new developed assemblies. Therefore, from the beginning of various life test analyses are necessary to distinguish factors that affect the lifetime.
박영근,주현준,김천영,정나현,이준규,이인원,Park, Young-Keun,Ju, Hyun-Jun,Kim, Cheon-Young,Jung, Na-Hyeon,Lee, Jun-Kyu,Lee, In-Won 한국시뮬레이션학회 2012 한국시뮬레이션학회 논문지 Vol.21 No.4
본 논문에서는 가상현실 기술을 기반으로 정비성 모의 시스템에 대한 개발 기술 및 적용 사례에 대해 기술하였다. 정비성 모의를 위해 가상현실 장비를 기반으로 한 몰입형 시뮬레이터가 개발되었으며, 상용 소프트웨어인 DELMIA를 활용한 조립 시뮬레이션이 공대지 유도무기를 대상으로 수행되었다. 개발된 시스템은 설계 단계에서 군수지원 요소 개발에 다양하게 활용이 가능하였으며 효용성을 확인할 수 있었다. This paper describes the development and applications of maintainability simulation system based on virtual reality technology. The immersive type maintainability simulator using virtual reality is developed and assembly simulation using DELMIA software is conducted for an air-to-ground munition as an example. The simulation processes and result validate the feasibility and effectiveness of maintainability simulation system for logistic element development.
이대열,이인원,조재호,김용빈,주현준,정나현,박준성,Lee, Dae-Yeol,Lee, In-Won,Joe, Jae-Ho,Kim, Yong-Bin,Ju, Hyun-Jun,Jung, Na-Hyeon,Park, Jun-Sung 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.6
A guidance kit transforming a general purpose bomb into an air-to-surface gliding bomb was developed. This guidance kit consists of a flight kit and a tail kit. Flight kit contains deployable wing, GPS/INS integrated navigation system, guidance and control system. Also this guidance kit was designed to use neither electrical nor mechanical interface with aircraft, and to increase dramatically the survivabilities of pilot and aircraft with the high accuracy and the mid-range non-powered gliding capability.