• Title/Summary/Keyword: Integrated Logistics Support

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A Study on the Scheduling of Planned Maintenance for Multicomponent System with Hidden Failures : Focusing on Inspection Cost (다품목 시스템의 Hidden Failure를 고려한 계획정비 스케줄링에 관한 연구 : 검사비용을 중심으로)

  • Kim, Mansoo;Hyun, Do Kyung;Kim, Sung Hwan;Ji, Woong Ki;Kwon, Ki-Sang
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.10
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    • pp.149-158
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    • 2019
  • The scheduling of planned maintenance problem of a system consisting of a number of components was studied. The purpose of maintenance scheduling is to minimize the cost of maintaining long-term operations. On the system side, the cost of a system shutdown can be minimized by grouping and inspecting a number of components. In addition, proper inspection cycles can be selected for each component to identify the failure sufficiently early to minimize the cost of the failure. To reduce the complexity of the calculations, the 'base interval approach' used in previous studies was applied and, in addition, the inspection cost savings from simultaneous inspections of multiple components were considered. To compare the effectiveness of inspection cost savings, this paper presents the results of simulation analysis performed by referring to the cases in the existing studies.

Double-Loop Coil Design for Wireless Power Transfer to Embedded Sensors on Spindles

  • Chen, Suiyu;Yang, Yongmin;Luo, Yanting
    • Journal of Power Electronics
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    • v.19 no.2
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    • pp.602-611
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    • 2019
  • The major drawbacks of magnetic resonant coupled wireless power transfer (WPT) to the embedded sensors on spindles are transmission instability and low efficiency of the transmission. This paper proposes a novel double-loop coil design for wirelessly charging embedded sensors. Theoretical and finite-element analyses show that the proposed coil has good transmission performance. In addition, the power transmission capability of the double-loop coil can be improved by reducing the radius difference and width difference of the transmitter and receiver. It has been demonstrated by analysis and practical experiments that a magnetic resonant coupled WPT system using the double-loop coil can provide a stable and efficient power transmission to embedded sensors.

A Study on Development of Integrated Logistics Support with Virtual Reality (가상현실 기반의 종합군수지원 수행 방안 연구)

  • Heo, Gil-Hwan;Lee, Seung-Yong;Lee, Hak-Pyo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.12
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    • pp.90-98
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    • 2018
  • An efficient R&D Methodology with minimized development period and cost needs to be developed due to advanced performance requirements of weapon systems. This will require the performance of logistics support analysis and design verification in the development stages of weapon systems through VR technology. VR technology has been applied to the Integrated Logistics Support (ILS) process as a part of collaborative system. In this study, we propose a development and application plan of ILS based on VR technology during the total life cycle of weapon systems. Moreover Digital Maintenance System (DMS) is introduced as a VR tool with key functions. finally, applications and improvement topics of DMS are suggested for use in ILS development.

A Study on the Application of MOEs, MOPs, TPMs for the Integrated Logistics Support (종합군수지원에서의 MOEs, MOPs, TPMs 적용방안에 대한 연구)

  • Seo, Yang Woo;Oh, Young Il;Park, Eun Shim;Lim, Seong Jun;Lee, Seung Sang
    • Journal of the Korean Society of Systems Engineering
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    • v.15 no.2
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    • pp.47-56
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    • 2019
  • Although the weapon systems are becoming more diverse and complex, they are progressing in a short development period and a longer test and evaluation period. The more difficult the given environment is, the more efforts and performance of quantitative target values can be made by development agencies to carry out stable projects. However, these target values of the Integrated Logistics Support are not specified in the requirements and being set during the system development phase. In this paper, application of MOEs, MOPs and TPMs for ILS are presented and provided the basis for carrying out systematic Verification & Validation activities. As a result that MOEs of the ILS were chosen as Availability and MOPs as Mission Reliability, Logistics Reliability, Maintainability and Supportability and TPMs as MTBF, MTBCF, MTTR and so on. In particular, it is appropriate tailoring and apply the TPMs considering the cost, schedule, scope of work and characteristics of the project.

Improvement of Logistics Service in Electronic Commerce (전자상거래에서의 물류서비스 개선방안)

  • Lee, Seung-Hui
    • 한국디지털정책학회:학술대회논문집
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    • 2004.05a
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    • pp.525-544
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    • 2004
  • The Purpose of this study is to examine logistics characteristics related to electronic commerce and to suggest improvement of logistics Service in electronic commerce. This paper concerns the logistics functions which are essential for completing a commerce process even under the EC environment and provides ways to improve the logistics performance. Electronic commerce have introduced two scenes; dramatic change of the existing distribution surroundings and noticeable achievement of the economic advance and social efficiency. But, in the same scene, electronic commerce can be a threat to business condition, especially logistics management. It suggests that for activation of EC it is necessary to strengthen the strategic alliances, introduce GPS and use the third party logistics positively to prepare for the settlements of traffic problems, support the introduction of integrated logistics service and logistics information system.

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The Effects of Logistics Competence in Korea Overseas Shipping Industry (국제해상운송업의 물류경쟁력 영향요인)

  • 박영근;공덕암
    • Journal of Korea Port Economic Association
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    • v.21 no.1
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    • pp.45-58
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    • 2005
  • The purpose of this study is to consider the problem on pursuit of logistics strategy by our international shipping company in international shipping business under the said circumstance due to the open international shipping market and to suggest the logistics strategy for the consideration of the logistics competition under new international shipping circumstances. The results of empirical analysis are mentioned as follows; First, it shall be considered to maintain the size of company bigger than a certain capability so that it may obtain the superior competition of logistics. Second, as there are the plus correlations between the competition of logistics and the logistic support, it is necessary to pursuit the upgrade service with using EDI system and making up the complex shipping and integrated logistics system in general. Third, with the rationalization of finance policy and the profitable management of shipping company the ratio of net worth can be raised and it can be achieved to make the sound financial structure as reducing the excessive debt ratio. Fourth, it can be effort continuously to perform the investment for the infrastructure of logistics support & the institutional supplement so that it may achieve to increase the efficiency of logistic support at pier and to reduce the cost of logistic support.

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A Study of Domestic Application of U.S. LPD(Logistics Product Data) (미국 군수체계데이터(LPD) 국내 적용방안 연구)

  • Kim, Geun Yeong;Kim, Nam Su;Cho, Ki Hyung;Lee, Hyuk;Park, Jae Hyun
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.50 no.9
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    • pp.663-668
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    • 2022
  • Since the early 2000s, the United States has applied TLCSM to reduce life cycle costs while maintaining the weapons system's combat readiness. With the application of TLCSM, the ILS concept centered on the acquisition stage shifted to IPS, a concept that manages life cycle costs throughout the entire life cycle. In addition, LSAR for developing ILS has switched to LPD for developing IPS. In this study, LSAR in Korea and LPD in the United States were compared and analyzed, and policies necessary for the introduction of LPD in Korea were proposed.

A Building Scheme on LAMIS for ROK Army (한국군 종합군수지원 관리정보체계 (LAMIS) 구축방안)

  • Hong Jang-Ui;Yun Hyeon-Cheol;Byeon Jae-Jeong
    • Journal of the military operations research society of Korea
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    • v.18 no.2
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    • pp.1-22
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    • 1992
  • Computer-aided logistics support system is recognized an essential system to reduce supply and maintenance cost, and to improve readiness of weapon system or operationable composite machines. According to these trends, this paper focuses on the design scheme and the computerization strategy of information management system for Integrated Logistics Support (ILS) work. Suggested system. LAMIS(Logistics support Analysis Management Information System) is a total system that composed of Logistics Support Analysis Management information system (LSAM), Configuration Management Information System (CMIS), Maintenance Management Information System (MMIS), Project Management System (PMS) and Information Retrival System(IRS) etc. Also, LAMIS is a computerized tool that improves current supply and maintenance support program, that attempts to reliable requirment analysis of logistics support elements, and that supports to use the existing technical specification of similar one when weapon system acquisition project is started newly. When LAMIS implication is completed, it can be applied to logistics support of defense or commercial site. Straightway, LAMIS will be enhanced with computer - aided design system, engineering drawing system, interactive electronic technical manual system, electronic data interchange system, and three dimensional simulation system to weapon system configuration. When that is done, LAMIS is CALS system.

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A Study on the Examination of Reliability Prediction Process and the Application of PLS data in Weapon System (무기체계 신뢰도 예측 프로세스 현황과 후속군수지원 데이터 적용 방안)

  • Kim, Geun-Hyung;Lee, Kang-Taek;Yoon, Jeong-Ah;Seo, Yang-Woo;Park, Seung Hwan
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.1
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    • pp.566-576
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    • 2018
  • As the weapon systems of the Korean Army possess massive firepower and multiple functions, the improvement of their quality through reliability prediction is becoming increasingly important. Currently, the reliability prediction of the weapon systems of the Korean Army is a difficult process, because it is conducted by naively calculating the reliability of their constituent parts. Recently, as various studies using accumulated data are undertaken across various industries, the defense industry is also attempting to analyze the Dark Data which have been accumulated but not yet used. Therefore, it is necessary to apply Post-Logistics Support (PLS) data in order to improve the reliability of the weapon systems and, for this purpose, the Korean Army needs to conduct diverse studies. Especially, the PLS data in the defense industry is very useful for reliability prediction, because the data on the defects reported after the development of the weapon systems are accumulated in this phase. This study examines the existing reliability prediction method conducted using the component parts and proposes a new reliability prediction method using PLS data. This framework can ultimately contribute to improve the prediction accuracy and quality of the weapon systems.

A Study on Government Support for Logistics Security (물류보안 인증을 위한 정부지원 방안 연구)

  • Lee, DonHee
    • Journal of Korea Society of Industrial Information Systems
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    • v.21 no.6
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    • pp.109-123
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    • 2016
  • This study investigates the importance of government's support for logistics security assurance through certification programs. First, the study analyzed priorities among the requirements of logistics firms through Analytic Hierarchy Process(AHP) and Quality Function Deployment(QFD) approaches. For this process we invited 21 logistics experts to assess the relationships between logistic firms' requirements and government policies regarding logistics security using the house of quality, a set of matrices of QFD. The results of this phase of the study revealed the priorities of logistics firms' goals regarding the diffusion of the government security certification program as follows: integrated logistics security systems(40.3%), strengthening government support systems(32.4%), and operational effectiveness of logistics security certification(27.2%). Second, a relative weights applied QFD method based on AHP was applied to determined the expected outcome of the logistics security certification program. The results indicated as follows: productivity improvement(28.4%), improved level of service(26.7%), logistics cost reduction(21.6%), advanced information systems(19.7%), and improved environmental protection(3.6%). The results of this study provide new insights concerning logistics firms' requirements for supply chain security and the importance of government's support policies through logistics security certification programs.