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Reliability and Maintainability Symposium, 2009. RAMS 2009. Annual

Date 26-29 Jan. 2009

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Displaying Results 1 - 25 of 114
  • [Front cover]

    Publication Year: 2009, Page(s): c1
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  • [Front inside cover]

    Publication Year: 2009, Page(s): c2
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  • Annual reliability and maintainability symposium

    Publication Year: 2009, Page(s): i
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  • [Copyright notice - reprint permission]

    Publication Year: 2009, Page(s): ii
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  • Symposium management committee

    Publication Year: 2009, Page(s): iii
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  • Past symposia & general chairs

    Publication Year: 2009, Page(s): iv
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  • The R. A. Evans - P. K. McElroy Award for the 2008 Best Paper

    Publication Year: 2009, Page(s):v - vi
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  • Previous recipients [The R. A. Evans ?? P. K. McElroy Award]

    Publication Year: 2009
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  • The R.A. Evans - P.K. McElroy Award for 2008 Best Paper [biography of Ralph A. Evans]

    Publication Year: 2009
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  • R. A. Evans - P. K. McElroy Award 2007 Best Paper

    Publication Year: 2009
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  • Tutorial sessions

    Publication Year: 2009, Page(s): x
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (118 KB)

    Provides an abstract for each of the tutorial presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings. View full abstract»

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  • Technical program sessions and moderators

    Publication Year: 2009, Page(s):xi - xii
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  • Technical papers

    Publication Year: 2009, Page(s):xiii - xix
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  • Author index

    Publication Year: 2009, Page(s):xx - xxii
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  • Reliability analysis of dynamic fiber bundle models

    Publication Year: 2009, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (283 KB) | HTML iconHTML

    Fiber bundle models are useful tools for explaining dynamic failure behavior in heterogeneous materials. Such models shed light on diverse phenomena such as fatigue in structural materials and earthquakes in geophysical settings. Building good theoretical models has proven straightforward, but analyzing them has required delving into statistical details of the interaction of various flaw features ... View full abstract»

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  • PMF series for availability and reliability probabilistic assessments

    Publication Year: 2009, Page(s):7 - 12
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1768 KB) | HTML iconHTML

    PMF series (a contiguous family of probability mass functions) is a new method for probabilistic assessment of availability and reliability of both repairable and non- repairable systems. The same general methodology is applied to both availability and reliability. This allows availability assessment of complex systems with both repairable and non- repairable subsystems. Binominal and Weibull can ... View full abstract»

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  • System of systems reliability for multi-state systems

    Publication Year: 2009, Page(s):13 - 18
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB) | HTML iconHTML

    The proliferation of networking technologies in commercial, consumer, and industrial applications has been mirrored in the defense industry. The US Department of Defense, along with comparable organizations abroad, have adopted a network centric paradigm for emerging and future systems. This migration to an information based approach is akin to the move to just-in-time manufacturing. That is, both... View full abstract»

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  • Reliability and quality of service in weighted probabilistic networks using Algebraic Decision Diagrams

    Publication Year: 2009, Page(s):19 - 24
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (483 KB) | HTML iconHTML

    In network reliability studies, nodes and links are usually represented as binary entities (either up or down). In many cases the analysis of the performance of the system requires a richer representation by associating to each arc a weight representing a specific attribute of the arc (e.g. capacity, resistance, cost, length). For example, the amount of traffic characterizing the connections in co... View full abstract»

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  • Improving the 1-parameter Weibull: A Bayesian approach

    Publication Year: 2009, Page(s):25 - 30
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB) | HTML iconHTML

    Using maximum likelihood estimation (MLE) to estimate the parameters in a Weibull distribution will lead to a biased estimation of the shape parameter when the sample size is small or too few failures are observed. This bias may lead to inaccurate reliability point estimates. In addition, with few data points available in the calculation, the uncertainty of the estimated parameters is high, which ... View full abstract»

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  • Bayesian reliability demonstration test in a Design for Reliability process

    Publication Year: 2009, Page(s):31 - 36
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (439 KB) | HTML iconHTML

    This paper illustrates how a Bayesian reliability demonstration test (BRDT) approach can be, and sometimes must be, integrated into a Design for Reliability (DFR) process. A simplified and effective BRDT algorithm is given, based on the prior distribution characteristics of reliability in the DFR process. The BRDT can significantly reduce sample size in reliability demonstration test, and serve as... View full abstract»

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  • Weibayes testing: What is the impact if assumed beta is incorrect?

    Publication Year: 2009, Page(s):37 - 42
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB) | HTML iconHTML

    This paper evaluates Weibayes small sample, zero and sudden death failure test and data analysis techniques in order to mathematically and graphically quantify the risk associated with assuming an incorrect value of the Weibull shape parameter, beta (beta). Specifically, the risk associated with assuming a value of beta that is higher than the ldquotruerdquo value of beta is investigated, as this ... View full abstract»

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  • Analysis of field performance using interval-censored incident data

    Publication Year: 2009, Page(s):43 - 46
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB) | HTML iconHTML

    Statistical time-to-failure analysis is a very powerful and versatile tool available to reliability engineers and statisticians for understanding and characterizing the failure risk and reliability of a component, device or system. Commonly applied methods of modeling time-to-failure involve fitting a parametric distribution, such as the Weibull probability function, using serial data on productio... View full abstract»

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  • Six challenges in implementation of effective Accelerated Life Tests

    Publication Year: 2009, Page(s):47 - 52
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (345 KB) | HTML iconHTML

    Accelerated life testing (ALT) is an effective method of demonstrating and improving product reliability in applications where the products are expected to perform for a long period of time. Even though reliability professionals recognize the significance of high reliability, there are certain challenges which hinder an effective application of ALT principles in practical applications. This paper ... View full abstract»

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  • Bayesian parameter estimation with prior weighting in ALT model

    Publication Year: 2009, Page(s):53 - 58
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (433 KB) | HTML iconHTML

    This paper provides an overview of the application of Bayesian inference to accelerated life testing (ALT) models for the concrete case of estimation by Maximum of Aposteriori (MAP) method in the case of constant stress levels. It studies the Bayesian inference over the accelerated life model as presented in [1]. It suites, integrates and generalizes the particular cases presented in [2] and [3]. ... View full abstract»

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  • Life-prediction of the CSADT based on BP algorithm of ANN

    Publication Year: 2009, Page(s):59 - 63
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB) | HTML iconHTML

    One of the main problems encountered when we study the reliability of high-quality, long-life products by traditional means is that it is difficult to obtain adequate failure data in the life testing, for example, cost and time are always limited. For many of these products, an underlying degradation process is the root cause of failures. In order to get useful information in a short time, acceler... View full abstract»

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