By Topic

IEEE Transactions on Reliability

Issue 4 • Date Oct. 1989

Filter Results

Displaying Results 1 - 23 of 23
  • Comment on "An improved Abraham-method for generating disjoint sums

    Publication Year: 1989, Page(s):422 - 424
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    The authors' earlier algorithm (see ibid., vol.R-36, p.70-74, Apr. 1987) yields relatively short disjoint sum forms of the structure functions of coherent binary systems. In the present paper, it is shown that, in applying this algorithm, still shorter disjoint sum forms can be obtained by proper arrangement of the path sets. This is demonstrated by some examples.<> View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comments on "Queuing model of a bi-level Markov service-system and its solution using recursion

    Publication Year: 1989, Page(s):428 - 429
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (139 KB)

    The commenter claims that the efficient solution technique of M. Alam and V. Mani (see ibid., vol.37, p.427-433, Oct. 1988) is easier to derive and generalize in matrix notation. The authors demonstrated that this technique is a matrix analog of the solution technique for the M/M/1/N queue.<> View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Shrinkage estimation of threshold parameter of the exponential distribution [reliability theory]

    Publication Year: 1989, Page(s):449 - 453
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    The authors study the usual preliminary test estimator of the threshold parameter of the exponential distribution in censored samples. The optimal levels of significance and their corresponding critical values for the preliminary test are obtained. The optimal values of shrinkage coefficients for a preliminary test shrinkage estimator are also obtained on the basis of the minimax regret criterion View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fitting a multivariate failure time distribution

    Publication Year: 1989, Page(s):444 - 448
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    A class of continuous multivariate distributions is reviewed. It is derived in a survival/reliability context, where the dependence is modeled as random effects, viz, by an unobserved covariate common to the components in a system and assumed to follow a positive stable distribution. Accounting for censored data is straightforward. The class is well fitted to proportional hazard models, and distri... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Lifetime distribution of circular consecutive-k-out-of-n:F systems with exchangeable lifetimes

    Publication Year: 1989, Page(s):460 - 461
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (124 KB)

    A recursive algorithm for computing the lifetime distribution of a circular consecutive-k-out-of-n:F system with statistically exchangeable component lifetimes is presented. The result applies to a load-sharing model View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A practical end-of-life model for semiconductor devices

    Publication Year: 1989, Page(s):485 - 493
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    The authors derive a model of active semiconductor device aging to predict end of mission life device parameters by extrapolating from early environmental and electrical test measurements. Beginning from mass action kinetics first principles, the model develops an envelope average of physico-chemical damage reaction kinetics of limited source amounts of contaminating reactants. Corroborating exper... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Some tests for comparing reliability growth/deterioration rates of repairable systems

    Publication Year: 1989, Page(s):440 - 443
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    The author presents some optimal tests for comparing the reliability growth/deterioration rate of repairable systems. Failures are assumed to follow a nonhomogeneous Poisson process with log-linear intensity. A numerical example is included View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optimal relayed mobile communication systems

    Publication Year: 1989, Page(s):457 - 459
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    Recently, D.T. Chiang and R.F. Chiang (1986) considered a relayed mobile communication system with evenly spaced mobile relay stations (spacecraft) moving at the same speed from an origin towards a destination. Such a system can be considered as a consecutive-k-out-of-n line. They gave equations for computing the mean number of stations needed for a successful relay and studied t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A model for system reliability with common-cause failures

    Publication Year: 1989, Page(s):406 - 410
    Cited by:  Papers (33)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    A model for the analysis of systems subject to common-cause failures is proposed. The system consists of a finite number of components that are subject to: (1) statistically independent failures, and (2) external failure causes (they need not be mutually statistically independent) for groups of components. Applications to fault-tree analysis and network reliability problems are discussed View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Generalized reliability results for 1-out-of-n:G repairable systems

    Publication Year: 1989, Page(s):468 - 471
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    The author examines a class of 1-out-of-n:G systems consisting of n nominally identical units in parallel redundancy serviced by a single repair facility. Assuming constant failure rates and general repair distributions permits the problem of finding the Laplace transform of the time-to-system-failure distribution and the mean time-to-system-failure to be reduced to solving a clo... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Bayes approach to simultaneous evaluation of similar assemblies

    Publication Year: 1989, Page(s):483 - 484
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    Simultaneous qualification testing of similar electronic-assembly designs that have the same reliability objectives lends itself to a Bayes approach. The author presents a method for obtaining the number of units to be put on test (test units) and the number of survivors required for this problem. The Bayes approach can reduce the total number of test units. The similarity of any two assemblies ca... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new estimation approach based on periodic inspection

    Publication Year: 1989, Page(s):436 - 439
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    The authors present a novel approach for estimating the failure-time distribution using count data, the number of failures per interval, from periodic inspection of a standby redundant system. The procedure is based on a result for stationary renewal processes that related the forward recurrence time to the interevent time distribution. The procedure performed well in a simulation study for five W... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Relayed communication via parallel redundancy

    Publication Year: 1989, Page(s):454 - 456
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    A communication is described where relay stations are moving in groups of k stations. If all k stations of a group fail, then all groups of k stations ahead of the failed k stations as well as the k failed stations are lost. The objective is to have one station reach the destination with all groups having at least one station in good condition. It is s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optimal replacement policies for k-out-of-n systems

    Publication Year: 1989, Page(s):462 - 467
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    The authors study a discrete-time, infinite-horizon, dynamic programming model for the replacement of components in a binary k -out-of-n:F system. The goal is to trade off the component replacement and system failure costs. Under the criterion of minimizing the long-run average cost per period, it is optimal to follow a critical component policy (CCP), viz., a policy specified by... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On/off cycling under multiple stresses

    Publication Year: 1989, Page(s):494 - 498
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The authors describe an experiment, a model, and an analytic method for on/off vs. continuous policy evaluation. The methodology was developed and verified through experimentation. An experimental life-test of small DC motors was designed and performed; it involved on/off cycling vs. continuous operation under multiple stresses. A stress-factor reliability model based on the two-parameter Weibull ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • MTBF of a complex binary coherent system

    Publication Year: 1989, Page(s):411 - 415
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    It is noted that there has yet been no detailed study of the relationships between the MTBF (mean time between failures) of a system and the sequences of component failures, except for the case of a series system where every component failure causes a system failure. The author defines MTBF anew and derives relationships between the properties of the MTBF of a binary coherent system and the proper... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multistate consecutively-connected systems

    Publication Year: 1989, Page(s):472 - 474
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    G. Shanthikumar (ibid., vol.R-36, p.546-550, Dec. 1987) has proposed a system called the consecutively connected system, which is a generalization of the consecutive-k-out-of-n:F system. He gave an O(n2) algorithm for computing the reliability of the consecutively connected system. In the present work, the authors further generalize it by assuming that the com... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Availability evaluation of flow networks with varying throughput-demand and deferred repair

    Publication Year: 1989, Page(s):499 - 505
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    The author presents some simple formulas for availability of flow networks with several levels of performance and variable throughput demands. The system comprises highly available independent components. Two main types of component failure are considered: (1) those where the corresponding repair can be deferred to a more convenient time, and (2) all other failures. This more convenient time is se... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Recursive solution technique in a multi-server bi-level queueing system with server breakdowns

    Publication Year: 1989, Page(s):416 - 421
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    The authors present a multiserver, first-come first-served queuing system that alternates between two modes of system operation. In one mode, all s servers are available, and in the other mode, only s-1 servers are available for serving the customers. This is due to breakdown of one of the servers. The random variables representing the system with s servers and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effects of redundancy management on reliability modeling

    Publication Year: 1989, Page(s):475 - 482
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    Two methods are investigated for incorporating the effects of fault detection and isolation (FDI) decision errors and redundancy management (RM) policy into reliability models for a simple single-component-dual-redundant system. These two methods are combinatorial analysis and Markov chain modeling. Reliability analysts have traditionally chosen the classical combinatorial approach. However, the a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Treatment of catastrophic events in availability assessment

    Publication Year: 1989, Page(s):506 - 507
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB)

    The authors discuss how catastrophic events, viz. rare failure events that violently affect the system, should be treated when assessing availability. In a general statistical framework, the problem treated is related to that of using the mean of a random variable to predict the actual value of the random variable. The discussion is based on experience gained from several availability studies of o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Bounds on the reliability of binary coherent systems

    Publication Year: 1989, Page(s):425 - 427
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    The structure function of a binary coherent system is approximated by using only a few of its minimal path sets and minimal cut sets. These two incomplete structure functions are represented as disjoint sums. The average of each is a lower and upper bound, respectively, for the system reliability. The usefulness of these bounds is demonstrated on example networks View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An algorithmic approach to increased reliability through standby redundancy

    Publication Year: 1989, Page(s):430 - 435
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    The authors address the issue of optimal redundancy allocation, viz, improving the reliability of a system by adding cold-standby spares, through an algorithmic approach that uses the unique characteristics of an assumed underlying failure distribution. Although the approach applies to systems with mixed parallel and series configurations, the discussion is limited to a series system of components... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

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
W. Eric Wong
University of Texas at Dallas
Advanced Res Ctr for Software Testing and Quality Assurance

ewong@utdallas.edu