• Title/Summary/Keyword: 수명주기 비용

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A Study on Cost Avoidance and Total Life Cycle Cost to Analysis of Effectiveness of the Management of DMSMS (부품단종관리 효용성 분석을 위한 회피비용 및 총수명주기비용에 대한 연구)

  • Kim, Si-Ok;Paik, Won-Chul;Kim, Dong-Gil;Kim, Heung-Geun
    • The Journal of the Korea institute of electronic communication sciences
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    • v.15 no.5
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    • pp.791-798
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    • 2020
  • The share of advanced technology in modern weapon systems are gradually increasing, and life cycle of components are shortened due to the rapid speed of technological development. On the other hand, the weapon systems have a characteristic that takes a long time in the requirement stage of weapon to the operation and maintenance stage. Due to inevitably, obsolescence of the main components for parts occurs in the acquisition phase. The obsolescence parts could cause delays in mass production schedules, and further adversely affects operational availability due to poor supply of repair parts during in the maintenance phase. However, business managers are obliged to maximize the performance while minimizing the cost of the total life cycle of the design, production, and operation stages. It is necessary to establish and implement an appropriate components and parts of life cycle management plan. In this research, we analyzed the effectiveness of parts obsolescence management through cost avoidance and total life cycle cost that can be reduced through proper parts obsolescence management.

A study on the accelerated life test for exhaust pipe-welds (배기 파이프 용접부 가속수명시험에 관한 연구)

  • Han, In-Su;Kim, Jong-Il;Kim, Hee-Jin;Hong, Young-Jun
    • Proceedings of the KAIS Fall Conference
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    • 2011.12b
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    • pp.492-495
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    • 2011
  • 본 연구는 가속수명시험을 통해 배기파이프 용접부의 수명평가에 관해 다루고 있다. 배기파이프 용접부는 실차 상태에서 열과 진동이 많이 가는 부분으로 내구에 많이 취약하다. 배기 파이프에 주기적인 하중을 가하여 가속시험하여, 배기파이프 용접부에 대한 신뢰성관련 수명특성을 빠른시간 내에 산출하기 위한 것이다. 적절한 수명분포 및 고장데이터를 수집분석하고 시험방법 과 시험결과를 활용하여 신뢰성 보증 시험시간을 단축하고 제품의 개발단계 및 일정 축소와 시험비용 감소 및 제품의 보증수명증대에 기여할 것이다.

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Apache NiFi-based ETL Process for Building Data Lakes (데이터 레이크 구축을 위한 Apache NiFi기반 ETL 프로세스)

  • Lee, Kyoung Min;Lee, Kyung-Hee;Cho, Wan-Sup
    • The Journal of Bigdata
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    • v.6 no.1
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    • pp.145-151
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    • 2021
  • In recent years, digital data has been generated in all areas of human activity, and there are many attempts to safely store and process the data to develop useful services. A data lake refers to a data repository that is independent of the source of the data and the analytical framework that leverages the data. In this paper, we designed a tool to safely store various big data generated by smart cities in a data lake and ETL it so that it can be used in services, and a web-based tool necessary to use it effectively. Implement. A series of processes (ETLs) that quality-check and refine source data, store it safely in a data lake, and manage it according to data life cycle policies are often significant for costly infrastructure and development and maintenance. It is a labor-intensive technology. The mounting technology makes it possible to set and execute ETL work monitoring and data life cycle management visually and efficiently without specialized knowledge in the IT field. Separately, a data quality checklist guide is needed to store and use reliable data in the data lake. In addition, it is necessary to set and reserve data migration and deletion cycles using the data life cycle management tool to reduce data management costs.

A Study on the Dependability Management Systems (DMS 구축 방향(IEC 60300중심으로))

  • 김종걸;김진국
    • Proceedings of the Korean Reliability Society Conference
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    • 2002.06a
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    • pp.309-319
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    • 2002
  • IEC60300의 국제 규격은 시간종속성 경영 시스템의 규격으로써 제 1부는 시간종속성 경영 프로그램, 제 2부는 시간종속성 프로그램 구성요소와 업무, 제 3부는 응용지침 표준의 13개의 규격으로 구성되어 있다. 이 규격은 제품의 초기 단계서부터 폐기단계까지 수명주기 전 단계에 걸쳐 운영의 효율성, 시간, 비용의 제약 하에 위험을 최소화하고 안전성을 최적화하기 위한 지침을 제공한다. 본 연구에서는 현재 기업들이 기본적으로 적용하고 있는 경영모델인 ISO 9000시스템과 안전 설계를 위한 신뢰성 분야의 IEC 60300시스템의 통합모형을 모색하고자 한다.

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A Study on the Correlation between Optimal Safety of Structures and Minimization of Life Cycle Cost(LCC) (구조물의 최적안전지수와 생애주기비용의 상관관계에 관한 연구)

  • Bang, Myung-Seok
    • Journal of the Korean Society of Safety
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    • v.29 no.6
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    • pp.94-98
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    • 2014
  • This study was intend to develop the optimal design method of suspension bridge by the reliability analysis based on minimization of life cycle cost(LCC). The reliability analysis was performed considering aleatory uncertainties included in the result of numerical analysis. The optimal design was estimated based on life-cycle cost analysis depending on the result of reliability analysis. As the effect of epistemic uncertainty, the safety index (beta), failure probability (pf) and minimum life cycle cost were random variables. The high-level distributions were generated, from which the critical percentile values were obtained for a conservative bridge design through sensitivity assessment.

A Study on the Life Cycle Cost Calculation of the Railroad Vehicle Based on the Maintenance Information (철도차량 유지보수정보를 이용한 수명주기비용 계산 연구)

  • Kim, Jae-Hoon;Jun, Hyun-Kyu;Park, Jun-Seo;Jeong, Hyun-Yong
    • Journal of the Korean Society for Railway
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    • v.12 no.1
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    • pp.88-94
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    • 2009
  • Life cycle costing is one of the most effective approaches for the cost analysis of long-life products such as the railroad vehicle. Life cycle costing includes the cost of concept design, development, manufacture, operation, maintenance and disposal. Especially, life cycle costing in the railroad industry has been focused on the maintenance cost. In this paper, the standard, guide and maintenance information of railroad vehicle were investigated, and the unique corrective and preventive maintenance templates of railroad vehicle were proposed. Maintenance cost of an auxiliary power supply system of EMU was predicted by using the proposed templates. The results show that the preventive maintenance, PM, cost is much higher compare to corrective maintenance, CM, cost because of daily and monthly maintenance tasks which require lots of labor work. It is expected that these templates can help railroad operators make maintenance strategies with consideration of the cost parameter.

The study on the prediction of the remaining life at the fillet welded joint by using eletric potential method (전위차법에 의한 필렛용접부의 잔여수명 예측에 관한 연구)

  • Um, Tae-Hwan;Chang, Kyong-Ho;Lee, Jae-Sun;Lee, Jin-Hee;Kim, You-Chul
    • Proceedings of the KWS Conference
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    • 2010.05a
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    • pp.56-56
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    • 2010
  • 최근 강구조물의 건설이 지속적으로 증가되어 왔다. 또한 강구조물의 유지관리 및 안전성에 대한 관심이 급증하고 있다. 시설물의 안전성 확보는 대형사고의 사전 예방, 공용 중 갑작스런 가동 중지에 의하여 발생되는 비용증가를 사전에 차단 할 수 있다는 점에서 그 중요성은 매우 크다고 할 수 있다. 또한 각종 구조물은 열악한 사용조건, 고온, 고압, 고속, 대형화됨에 따라 일단 사고가 발생 했을 경우 대형사고의 위험이 예상되므로, 제작시 검사의 강화뿐만이 아니라 공용 중 구조물의 안전성을 진단 할 수 있는 모니터링 체계의 확립이 필요한 시점이다. 현재 국내에서 강구조물들의 균열 모니터링 시스템에 관한 연구는 매우 미흡한 실정이며, 현재 사용되고 있는 비파괴검사 방법은 UT와 RT등이다. 이러한 방법들은 많은 시간과 경비가 소요되며 또한 거대구조물 혹은 사람의 접근이 어려운 곳에는 적용하기가 힘들다. 또한 주기적인 검사 작업으로 인한 막대한 시간과 비용의 손실이 발생되고 있으며 초기 결함을 조기에 인지하지 못함으로써 적절한 보수 보강 대책이 이루어지지 않아 보수 보강 비용의 증대를 초래한다. 더욱이, 결함이 진전된 이후에도 이것을 인지하지 못하여 적절한 대응을 하지 않는다면 대형사고로 이어질 수도 있다. 따라서 강구조물에 대한 효율적인 유지관리가 가능하고, 초기결함으로부터 균열이 진전하여 붕괴되는 사고를 미연에 방지하며 초기에 보수보강 작업을 수행함으로써 보수보강 비용도 절감 할 수 있는 모니터링 시스템의 개발이 요구되고 있다. 이러한 모니터링 시스템의 개발은 기술적 측면에서 강구조물의 효율적인 유지 관리 노하우를 얻을 수 있으며 경제 산업적 측면에서는 보수 보강 비용 및 불필요한 주기적 점검 비용을 절감 할 수 있다. 이 연구에서는 전위차법을 이용하여 강구조물의 필렛 용접부에서의 균열진전양상을 파악하고 정량화를 통해 필렛용접부의 잔여수명을 예측하였다.

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A Study on Life Cycle Cost According to Bridge Condition (교량 상태에 따른 생애주기비용 영향 분석)

  • Park, Jun-Yong;Lee, Keesei
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.22 no.2
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    • pp.802-809
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    • 2021
  • To cope with the increasing maintenance costs due to aging, the maintenance cost was evaluated from the perspective of asset management. The maintenance cost can be predicted based on the condition of the bridge, and the life cycle cost is used as an index. In general, the condition of a bridge has a wide distribution characteristic depending on the deterioration, load, and material characteristics. In this paper, to evaluate the effect of the bridge conditions on the life cycle cost, condition prediction models were constructed considering the service life, deterioration rate, and inspection error, which are the main variables of the bridge condition and life cycle cost calculation. In addition, condition prediction models were constructed based on the distribution of the health index to estimate the upper and lower bounds of the life cycle costs that can occur in individual bridges. Life cycle cost analysis showed that the life cycle cost differed significantly according to the condition of the bridge. Accordingly, research will be needed to increase the reliability of predicting the life cycle cost of individual bridges.

A Study on the Development plan of Configuration Control for Military Product (군수품 형상통제업무 발전방안에 관한 연구)

  • Jung, Hyun-Woo;Shim, Bo-Hyun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.6
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    • pp.70-77
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    • 2020
  • Configuration management is an important project management method. Configuration management is increasing daily and improving defense power as a management tool for technical data of power support systems. Configuration management work must be carried out properly from the beginning of development to acquire an excellent weapon system. In procurement, configuration management is a vital factor that can determine the cost of maintaining operations during the transfer of military supplies and carry out systematic management among operational support. Countries are making changes to policies and systems to manage R&D, standards, and patents in conjunction with each other from the beginning of research and execution, and it is important to establish the concept of managing and controlling the configuration as an efficient means of managing military resources. To identify the activity details during the entire life cycle from the beginning of acquisition to the end of disposal by linking munitions configuration control with the total life cycle, and redefine the appropriate work system, this study investigated and analyzed the U.S. configuration control procedures to identify the activity details and present areas to develop.