System Balance for Extended Logistic Systems
Article Abstract:
An extended logistic system is a well defined configuration of complex equipment, supporting inventory levels of components and modules, supporting maintenance facilities and supporting transportation systems. Examples are aircraft programs, radar systems, or networks of communication satellites. Methods are developed for measuring system persistence times of extended logistic systems. An optimization model for examining systems design and trade off decisions is proposed. The model maximizes system availability subject to a budget constraint on system cost and a time constraint on system failure time. The use of the optimization model for system design and trade-off decisions is illustrated by two examples using representative data from an Air Force program.
Publication Name: Operations Research
Subject: Petroleum, energy and mining industries
ISSN: 0030-364X
Year: 1983
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Series Systems and Reliability Demonstration Tests
Article Abstract:
The exposure distribution of successive failures of large complex systems is common. The reason is that such systems can often be represented as a collection of several systems in series such that any subsystem failure causes a system failure. The practice of using a homogeneous Poisson process approximation is well accepted. The approximation is often called the central limit theorem of reliability. A problem is that though the number of system components may be large, the number of subsystems may be small. Corrections are available but seldom used. Also, the renewal of a subsystem typically does not replace the entire subsystem. Failures may not be independent. System age is often ignored when reliability tests are designed.
Publication Name: Operations Research
Subject: Petroleum, energy and mining industries
ISSN: 0030-364X
Year: 1984
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On the Reliability of Repairable Systems
Article Abstract:
Fault tree analysis is a valuable tool in identifying system failure. Quantitative analysis of reliability for systems with repairable components is addressed. The most important system characteristic to be calculated is the time to first failure. Approximations with error bounds for the distribution of the time to first failure are desired. A numerical example is included.
Publication Name: Operations Research
Subject: Petroleum, energy and mining industries
ISSN: 0030-364X
Year: 1984
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