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Reliability, IEEE Transactions on

Issue 3 • Date Aug 1988

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Displaying Results 1 - 15 of 15
  • k-out-of-m system availability with minimum-cost allocation spares

    Publication Year: 1988 , Page(s): 287 - 292
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (448 KB)  

    An optimization method for determining the number of spare units that should be allocated to a k-out-of-m system to minimize the system-spares cost yet attain the specified system availability is presented. The objective function for optimization is a nonlinear integer type. The optimization method is a variation of the simplex search technique used for continuous functions. The ... View full abstract»

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  • Assessing throughput and reliability in communication and computer networks

    Publication Year: 1988 , Page(s): 208 - 211
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (268 KB)  

    System performance and reliability are jointly assessed for highly reliable communication/computer networks. The model assumes that at most a small number of components can be down at a time and that the average repair/replacement time of a failed component is small when compared with the average failure times of network components. The system performance is measured in terms of network throughput... View full abstract»

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  • Sequential imperfect preventive maintenance policies

    Publication Year: 1988 , Page(s): 295 - 298
    Cited by:  Papers (35)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (260 KB)  

    Improvement factors in hazard rate and age for a sequential preventative maintenance (PM) policy are introduced. Two imperfect PM models are analyzed: (1) PM reduces the hazard rate while it increases with the number of PMs, and (2) PM reduces the age. The PM is done at intervals xk (k=1,2, . . . , N) and is imperfect. The optimal policies to minimize the mean... View full abstract»

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  • Reliability analysis using Weibull lifetime data and expert opinion

    Publication Year: 1988 , Page(s): 340 - 347
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (488 KB)  

    An approach to the analysis of failure data from a Weibull distribution is presented. The approach features incorporation of expert opinion and of the author's opinion on the expertise of the experts in the analysis. The use of Laplace approximation results in formulas which are easy to compute View full abstract»

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  • Network reliability with arc failures and repairs

    Publication Year: 1988 , Page(s): 268 - 273
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (364 KB)  

    Arc repair probabilities are incorporated into network calculations for directed networks with independent arc failures. A discrete-time Markov chain with one absorbing state is constructed for the problem. The transition probability matrix is used to determine the probability of source-to-sink conductivity in a given time interval, the mean time to source-to-sink connectivity, the fraction of tim... View full abstract»

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  • Failure rate of a cold- or hot-spared component with a lognormal lifetime

    Publication Year: 1988 , Page(s): 299 - 307
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (652 KB)  

    Graphical and asymptotic representations are derived for the failure rates of cold-spared and hot-spared assemblies consisting of a pair of statistically independent components with identical, lognormally distributed lifetimes. Application to a laser regenerator in an undersea optical-communication cable is discussed. For the lognormal-lifetime distribution, which applies to many solid-state compo... View full abstract»

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  • Reliability evaluation in power-system transmission planning: practical considerations

    Publication Year: 1988 , Page(s): 274 - 279
    Cited by:  Papers (5)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (432 KB)  

    In the reliability algorithm based on the maximum-flow minimum-cut technique together with the decomposition principle, the generation of the state space for purposes of classification requires a large amount of memory. A state-space truncation algorithm which reduces the number of states while maintaining accuracy within specific limits is presented. The reliability algorithm is developed further... View full abstract»

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  • A simple model for fatigue life

    Publication Year: 1988 , Page(s): 314 - 322
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (592 KB)  

    A simple model to handle fatigue-life length problems is discussed. The characteristic property of the model is that it combines the Palmgren-Miner rule with time invariance. The model is applied to situations with both random strength and random load. The randomness in the life is generated by the random strength and not by the random load. The only property of the random load that affects the li... View full abstract»

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  • On computing MTBF for a k-out-of-n:G repairable system

    Publication Year: 1988 , Page(s): 312 - 313
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (128 KB)  

    It is often necessary to calculate the MTBF (mean time between failures) quickly in order to make timely design decisions. An important system for which such calculations must be made is a k-out-of- n:G parallel system with unlimited repair and exponential interfailure and repair times at the unit level. Although a general formula is known, it is not easily remembered or derived.... View full abstract»

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  • Transient-fault analysis for retry techniques

    Publication Year: 1988 , Page(s): 323 - 330
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (600 KB)  

    The problem of system recovery from transient faults is addressed using retry techniques. A probabilistic model for the activity of faulty periods, and a fault analysis to derive the optimum retry period are presented. Distribution functions are derived to represent the case of false alarm, where a transient fault is flagged as permanent, and the case of a miss because too many faults coexist, ove... View full abstract»

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  • Optimal wear-limit replacement with wear-dependent failures

    Publication Year: 1988 , Page(s): 293 - 294
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (148 KB)  

    The optimal wear-limit for preventive replacement for an item with wear-dependent failure rate is derived by minimizing the long-run total mean cost rate. The generic term wear connotes any type of degradation that accumulates through use and is observed continuously in time. The optimal strategy has the same form as the age replacement policy View full abstract»

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  • Schemes of dynamic redundancy for fault tolerance in random access memories

    Publication Year: 1988 , Page(s): 331 - 339
    Cited by:  Papers (1)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (844 KB)  

    For large memory capacities, stand-by systems usually need a considerable amount of redundant hardware, not only because of the spare components, but for storing fault conditions and for carrying out the necessary reconfiguration. As alternatives, two methods of implementing fault tolerance by means of dynamic redundancy in random-access memories are proposed which allow the treatment of memory-ch... View full abstract»

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  • A practical implementation of the factoring theorem for network reliability

    Publication Year: 1988 , Page(s): 259 - 267
    Cited by:  Papers (23)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (804 KB)  

    The factoring theorem is a simple tool for determining the K -terminal reliability of a network, i.e. the probability that a given set K of terminals in the network are connected to each other by a path of working edges. An implementation of an algorithm which uses the factoring theorem, in conjunction with degree-1 and degree-2 vertex reductions, to determine the reliability of ... View full abstract»

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  • A note on convergence problems in numerical techniques for accelerated life-testing analysis

    Publication Year: 1988 , Page(s): 348 - 349
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (148 KB)  

    Numerical solutions to determine maximum-likelihood estimators of parameters use a variety of techniques such as Newton-Raphson, Hook-Jeeves, and steepest ascent. All of these methods are subject to convergence difficulties that frequently occur in simulation studies. A tested and tried transformation for a variety of likelihood functions, and for the above mentioned numerical techniques, is intro... View full abstract»

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  • Replacement vs. repair of failed components for a system with a random lifetime

    Publication Year: 1988 , Page(s): 280 - 286
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (448 KB)  

    The computation of a variety of reliability measures for a system that is observed over a random time horizon is examined. This time interval, which can correspond to the system mission, the system lifetime, etc., is assumed to be distributed as a random variable of phase type. Models are developed that aid a decision-maker to choose among the actions of replace, repair, or do nothing, whenever a ... View full abstract»

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Aims & Scope

IEEE Transactions on Reliability is concerned with the problems involved in attaining reliability, maintaining it through the life of the system or device, and measuring it.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Way Kuo
City University of Hong Kong