Journal of Korean Society for Quality Management (품질경영학회지)

Korean Society for Quality Management (한국품질경영학회)
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Reliability Prediction Based Reliability Growth Management : Case Study of Surveillance System

신뢰도 예측 기반 신뢰도 성장 관리 : 감시체계 사례

  • Kim, SB (School of Industrial Systems and Naval Architecture Engineering, Changwon National University) ;
  • Park, WJ (Department of Industrial and Systems Engineering, Changwon National University) ;
  • You, JW (The 6th R&D Institute Sonar Systems PMO, Agency for Defense Development) ;
  • Lee, JK (The 6th R&D Institute Sonar Systems PMO, Agency for Defense Development) ;
  • Yong, HY (ILS R&D Center, LIG NEX1)
  • 김상부 (창원대학교 산업시스템 및 조선해양 융합공학부) ;
  • 박우재 (창원대학교 산업시스템공학과) ;
  • 유재우 (국방과학연구소 제6기술연구본부 소나체계개발단) ;
  • 이자경 (국방과학연구소 제6기술연구본부 소나체계개발단) ;
  • 용화영 (LIG넥스원 ILS 연구소)
  • Received : 2018.12.18
  • Accepted : 2019.02.27
  • Published : 2019.03.31
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Abstract

Purpose: In this study, a reliability prediction based reliability growth management is suggested especially for the early development phase of a system and the case study of surveillance system is given. Methods: The proposed reliability prediction based reliability growth management procedures consists of 7 Steps. In Step 1, the stages for reliability growth management are classified according to the major design changes. From Step 2 to Step 5, system reliability is predicted based on reliability structures and the predicted reliabilities of subsystems (Level 2) and modules (Level 3). At each stage, by comparing the predicted system reliability with that of the previous stage, the reliability growth of the system is checked in Step 6. In Step 7, when the predicted value of sustem reliability does not satisfy the reliability goal, some design alternatives are considered and suggested to improve the system reliability. Results: The proposed reliability prediction based reliability growth management can be an efficient alternative for managing reliability growth of a system in its early development phase. The case study shows that it is applicable to weapon system such as a surveillance system. Conclusion: In this study, the procedures for a reliability prediction based reliability growth management are proposed to satisfy the reliability goal of the system efficiently. And it is expected that the use of the proposed procedures would reduce, in the test and evaluation phase, the number of corrective actions and its cost as well.

Keywords

PJGOB9_2019_v47n1_187_f0001.png 이미지

Figure 1. Reliability Growth Management Process of MIL-HDBK-189C (Assessment Approach)

PJGOB9_2019_v47n1_187_f0002.png 이미지

Figure 2. Reliability Growth Analysis of Surveillance System

Table 1. Stage Classification according to Major Design Changes

PJGOB9_2019_v47n1_187_t0001.png 이미지

Table 2. Feasibility Indices of Subsystems

PJGOB9_2019_v47n1_187_t0002.png 이미지

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