Annual Reliability and Maintainability Symposium, 2003.

27-30 Jan. 2003

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  • Annual Reliability and Maintainability Symposium. 2003 Proceedings (Cat. No.03CH37415)

    Publication Year: 2003
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7896 KB)

    The following topics are dealt with: reliability; maintainability; software reliability; product design; product assurance; repairable systems modeling; accelerated life testing; safety; risk management; probabilistic risk assessment; reliability prediction; life cycle costing; reliability centered maintenance; reliability and maintainability tools application; Bayesian methods; aging; modeling; o... View full abstract»

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  • Author index

    Publication Year: 2003, Page(s):613 - 614
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    Freely Available from IEEE
  • Key Word Index

    Publication Year: 2003, Page(s):615 - 616
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    Freely Available from IEEE
  • Enhanced reliability prediction method based on merging military standards approach with manufacturer's warranty data

    Publication Year: 2003, Page(s):202 - 206
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (335 KB) | HTML iconHTML

    This paper presents a practical method of enhancing the process of reliability prediction by merging empirical equations of MIL-HDBK-217 with generic component failure rates, which are obtained from manufacturer's warranty data. Each of those two reliability prediction methods have advantages and disadvantages; though the appropriate combination of both would help the user to overcome their shortc... View full abstract»

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  • Predicting reliability via neural networks

    Publication Year: 2003, Page(s):196 - 201
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (351 KB) | HTML iconHTML

    The objective of this work is to predict the reliability of automotive components and systems from experimental failure data using artificial neural networks. To construct the necessary neural models, the Neural Simulation Tool (NEST), developed by Polytechnic of Milan, has been employed. An operative procedure based on the developed ANN models has been been implemented to predict the trend of the... View full abstract»

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  • PREDICT: a case study, using fuzzy logic

    Publication Year: 2003, Page(s):188 - 195
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (483 KB) | HTML iconHTML

    Los Alamos National Laboratory, Design For Reliability, Inc., and others, have worked together to develop PREDICT, a new methodology to characterize the reliability of a new product during its development program. Rather than conducting testing after hardware has been built, and developing statistical confidence bands around the results, this updating approach starts with an early reliability esti... View full abstract»

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  • Using equivalent failure rates to assess the unavailability of an ageing system

    Publication Year: 2003, Page(s):82 - 88
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (427 KB) | HTML iconHTML

    In this paper, the authors are interested in the calculation of some dependability measures for a system that is subjected to ageing. This system can be in two different states: the perfect operating state; and the failure state. First, the problem of the modeling of aging is discussed. Then, they study a general model and derive formulae for the unavailability and the mean number of failures over... View full abstract»

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  • Bayesian estimation of the variability of reliability measures

    Publication Year: 2003, Page(s):182 - 187
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (478 KB) | HTML iconHTML

    Bayesian population variability analysis, also known as the first stage in two-stage Bayesian updating, is an estimation procedure for the assessment of the variability of reliability measures among a group of subpopulations of similar systems. The estimated variability distributions are used as prior distributions in system-specific Bayesian updates. In this paper, we briefly outline the estimati... View full abstract»

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  • Design of inspection and maintenance models based on the CCC-chart

    Publication Year: 2003, Page(s):74 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB) | HTML iconHTML

    In this research, six maintenance models are constructed based on whether minor inspection, major inspection, minor maintenance and major maintenance are performed on a system. The system to study is a production process in which items produced can be classified as either conforming or nonconforming, and a statistical process control chart called CCC-chart (cumulative count control chart) can be a... View full abstract»

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  • Retrograde progress of reliability analysis methods

    Publication Year: 2003, Page(s):177 - 181
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (342 KB) | HTML iconHTML

    Several examples are presented to show how some development of reliability analysis methods has led to a resurgence of mistakes and pitfalls, which were believed to have been resolved a long time ago. A review of those cases indicates that the major cause of this undesirable outcome is the emphasis on procedures, while overlooking the importance of definitions and basic concepts, including the sta... View full abstract»

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  • Environmental screening and relevant accelerated tests for products in an outdoor ground environment

    Publication Year: 2003, Page(s):309 - 312
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (410 KB) | HTML iconHTML

    Corrosion is the dominant failure mode of products in underground water pits. The failure mechanism was studied to determine the dominant variables. The major variables, which dictate galvanic and pitting corrosion, are pH, temperature and concentration of the various species in the solution. A field screening procedure was used to determine the concentration of the anions, pH and temperature in d... View full abstract»

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  • Availability analysis of load-sharing systems

    Publication Year: 2003, Page(s):551 - 555
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    Markov reward models lend themselves naturally to a unified reliability and performance analysis of load-sharing systems. However, reliability and performance analyses are often done independently without realizing that the performance analyst's results should be used to assign rewards in the reliability analyst's Markov chains. As a result, a state's reward is approximated by Ni/N, whe... View full abstract»

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  • Robust reliability design of diagnostic systems

    Publication Year: 2003, Page(s):35 - 39
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (331 KB) | HTML iconHTML

    Diagnostic systems are software-based built-in-test systems which detect, isolate and indicate the failures of the prime systems. The use of diagnostic systems reduces the losses due to the failures of the prime systems and facilitates subsequent repairs. Thus diagnostic systems have found extensive applications in industry. The algorithms performing operations for diagnosis are important parts of... View full abstract»

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  • New concept for aircraft maintenance management. II. The establishment of the spoon-shaped curve model

    Publication Year: 2003, Page(s):68 - 73
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (526 KB) | HTML iconHTML

    On the basis of many years' analyses and studies on abundant statistical data, and taking specialists' experiences into consideration, the authors of this paper have discovered the statistical law of resource consumption of field maintenance-man-hours-the spoon-shaped curve model. The famous model-the bath-tub curve model has revealed the general law of failure concerning product life from the ang... View full abstract»

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  • Using quantitative analysis to make risk-based decisions

    Publication Year: 2003, Page(s):170 - 176
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    Often the purpose of performing a qualitative hazard analysis is to judge the acceptability of, or offer improvements to, an engineered system. Many papers and techniques exist that describe the well-defined hazard analysis philosophy of (1) defining the hazards, (2) identifying the potential accident scenarios and causes, and (3) listing the preventive and mitigative safeguards. However, qualitat... View full abstract»

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  • Distribution systems reliability-Lakeland Electric case study

    Publication Year: 2003, Page(s):546 - 550
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    The case study presented in the paper combines the distribution substation and the distribution feeders in one analysis to evaluate the reliability of supply at a customer location. This approach provides a more realistic set of reliability indices, because it includes the outage impact of both distribution feeder(s) and the substation components. The indices can be used to rank needed reliability... View full abstract»

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  • Optimal cost-effective design of parallel systems subject to imperfect fault-coverage

    Publication Year: 2003, Page(s):29 - 34
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (325 KB) | HTML iconHTML

    Computer-based systems intended for critical applications are usually designed with sufficient redundancy to be tolerant of errors that may occur. However, under imperfect fault-coverage conditions (such as the system cannot adequately detect, locate, and recover from faults and errors in the system), system failures can result even when adequate redundancy is in place. Because parallel architectu... View full abstract»

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  • Discrete event simulation to improve aircraft availability and maintainability

    Publication Year: 2003, Page(s):63 - 67
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    This paper presents a study of maintenance operations at the Daytona Beach, Florida campus of Embry-Riddle Aeronautical University. Embry-Riddle is well-known for its large flight training programs. The Flight Training Department also maintains the school's aircraft on-site at the Daytona Beach campus. There, overall system availability at the operational level has been a chronic problem. The numb... View full abstract»

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  • The potential application of risk assessment to the Breakthrough Propulsion Physics Project

    Publication Year: 2003, Page(s):164 - 169
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (465 KB) | HTML iconHTML

    In May of 2001, researchers at the NASA Glenn Research center in Cleveland Ohio began exploring the possibility of applying risk assessment to a frontier propulsion project called Breakthrough Propulsion Physics (BPP). The goals of BPP are the drastic reduction or elimination of propellant mass, the attainment of hyper-fast space travel (approaching or exceeding) the speed of light, and new method... View full abstract»

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  • Power line maintenance with minimal repair and replacement

    Publication Year: 2003, Page(s):541 - 545
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (602 KB) | HTML iconHTML

    Power distribution systems are physically very large exposed entities with little redundancy. They contain a multiplicity of feeder lines of varying configuration, age and maintainability and have very long service lives. This work describes repairable system and life data methods for assessing preventive maintenance of such systems. It is postulated that a power line can be treated as a system wh... View full abstract»

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  • Statistical analysis of accelerated experiments in mechanics using a mechanical accelerated life model

    Publication Year: 2003, Page(s):124 - 131
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (557 KB) | HTML iconHTML

    Accelerated testing of mechanical products offers great potential for development in reliability life testing. Unfortunately, difficulties met in accelerated life testing have limited its applications and acceptance. This paper presents a discussion of the different approaches to accelerate life of mechanical materials. The importance of failure mechanism models and the separate treatment of failu... View full abstract»

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  • A new software-based technique for low-cost fault-tolerant application

    Publication Year: 2003, Page(s):25 - 28
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB) | HTML iconHTML

    A new software approach providing fault detection and correction capabilities by using software techniques is described. The approach is suitable for developing commercial-off-the-shelf processor-based architectures for safety-critical applications. Data and code duplications are exploited to provide fault detection and correction capabilities. Preliminary results coming from fault injection exper... View full abstract»

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  • Early reliability and failure analysis of modern telephone audio systems

    Publication Year: 2003, Page(s):1 - 11
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1493 KB) | HTML iconHTML

    Typical early failures of modern telephones, characterized by their inability to provide quality audio performance, were analyzed. Specifics of advanced mass consumer communication electronics reliability and failure analysis have been discussed. Complementary theoretical and experimental methods were applied in order to effectively evaluate diverse acoustical reliability specifics, allocate defec... View full abstract»

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  • A method for reliability optimization through degradation analysis and robust design

    Publication Year: 2003, Page(s):55 - 62
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (570 KB) | HTML iconHTML

    Given the strong drive to achieve a short time to market with strongly innovative products many companies face a structural dilemma with respect to product reliability. Due to the increasing complexity of products and the way they are applied, longer and increasingly complex tests are required to establish (and if necessary optimize) the reliability of these products. On the other hand, due to the... View full abstract»

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  • Automatic generation of diagnostic expert systems from fault trees

    Publication Year: 2003, Page(s):143 - 147
    Cited by:  Papers (17)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (357 KB) | HTML iconHTML

    When a fault tolerant computer-based system fails, diagnosis and repair must be performed to bring the system back to an operational state. The use of fault tolerance design implies that several components or subsystems may have failed, and that perhaps many of these faults have been tolerated before the system actually succumbed to failure. Diagnosis procedures are then needed to determine the mo... View full abstract»

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