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Annual Reliability and Maintainability. Symposium. 1999 Proceedings (Cat. No.99CH36283)

18-21 Jan. 1999

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  • 1999 Annual Reliability and Maintainbility Symposium [front matter]

    Publication Year: 1999, Page(s):i - x
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  • Annual Reliability and Maintainability. Symposium. 1999 Proceedings (Cat. No.99CH36283)

    Publication Year: 1999
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    Freely Available from IEEE
  • Author index

    Publication Year: 1999, Page(s):xvii - xviii
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  • PANEL: Advisory Board - What Are The Successful Companies Doing?

    Publication Year: 1999, Page(s):219 - 223
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  • Author index

    Publication Year: 1999, Page(s): cx
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  • Improving availability and cost performance for complex systems with preventive maintenance

    Publication Year: 1999, Page(s):383 - 388
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    This paper investigates improving system limiting availability and expected system cost rate for a complex system through age replacement preventive maintenance (PM). This study defines the complex system as a classic bridge reliability structure consisting of five independent subsystems. A competing risk model is used for each subsystem's unique life distribution. This model includes two independ... View full abstract»

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  • A new prediction-methodology on avionics embedded electronics: why? how?

    Publication Year: 1999, Page(s):378 - 382
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    Systematic embedded equipment follow-up shows a great difference between reliability prediction and the field reliability. The authors study another reliability prediction method, based on the reliability tests performed by the parts manufacturers. The proposed methodology is applied to avionics embedded electronics equipment and the results are compared to field return data. A very good accordanc... View full abstract»

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  • Accelerated reliability tests: solder defects exposed

    Publication Year: 1999, Page(s):43 - 49
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1596 KB)

    This paper describes methodology to perform risk assessment and establish the quality and reliability of solder joints utilizing accelerated reliability life testing techniques. Temperature cycling tests were performed on equal number of 100-pin quad flat pack package mounted on printed circuit board assemblies from a reworked and nonreworked soldering process. The data showed that the accelerated... View full abstract»

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  • FMECA modeling-a new approach

    Publication Year: 1999, Page(s):25 - 28
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (732 KB)

    FMECA tools must be included into the designers tools suit in order to support the new vision for concurrent engineering environment. To support this new vision the authors introduce a major enhancement to the failure mode effects and criticality analysis (FMECA) to provide more accurate, simpler, more accessible and frequently used computerized analysis tool. They introduce new terminology to enh... View full abstract»

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  • In-service reliability assessment and top-down approach provides alternative reliability prediction method

    Publication Year: 1999, Page(s):365 - 377
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1012 KB)

    The desire to develop a realistic mean-time-between-failure (MTBF), mean-time-to-failure (MTTF), or failure rate prediction method, which doesn't assume that only piece part faults cause system failures, has led to a new methodology involving in-service reliability assessment and a top-down approach. This methodology reduces uncertainty in the reliability predictions by relying primarily on line r... View full abstract»

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  • Case study of a year 2000 platform testing initiative

    Publication Year: 1999, Page(s):224 - 229
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    This paper uses the results from the testing of over 2300 personal computers (PCs) in a multinational Fortune 500 company to examine the question of year 2000 hardware compliance and the actual number of machines that fall into the category of “not compliant”. The PCs tested cover a broad scope in terms of age and configuration. We perform a case study of the method and results, and pr... View full abstract»

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  • Evolutionary maintenance for aircraft engines

    Publication Year: 1999, Page(s):62 - 68
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    This paper looks at the concept of evolutionary maintenance. This approach is especially useful for expensive, complex systems, such as aircraft engines. In evolutionary maintenance, the maintenance and inspection schedule is adjusted after every service activity. The requires knowledge of the time-to-failure of each module of the engine and the corresponding hard lives of any of its components if... View full abstract»

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  • New analysis methods of multilevel accelerated life tests

    Publication Year: 1999, Page(s):38 - 42
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    The development of multilevel accelerated life stress tests has been hindered by the difficulty of performing adequate and satisfactory data analysis. When 2, 3 or 4 levels of stress exist, even a computer analysis can be formidable. Nelson (1990) showed that even a simple analysis of seven levels of a single stress can become quite a challenge. This paper shows a new computerized software approac... View full abstract»

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  • A modified FMEA tool for use in identifying and addressing common cause failure risks in industry

    Publication Year: 1999, Page(s):19 - 24
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    The nature of common cause failures (CCFs) is explored in the context of existing analytical techniques. Failure modes and effects analysis (FMEA) is described as a means for accomplishing early risk assessment in the context of an existing analysis framework. Cause and coupling factor taxonomies are refined to fit the FMEA methodology. This modification allows consideration of CCF risks. Blending... View full abstract»

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  • Simplifying the solution of redundancy allocation problems

    Publication Year: 1999, Page(s):190 - 194
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    Redundancy allocation is a useful technique in designing systems that have high levels of reliability while satisfying limitations on cost, weight, volume, etc. Performing redundancy allocation typically involves formulating and solving an appropriate mathematical programming problem. In the literature, a wide variety of these problems have been formulated and a large number of solution techniques... View full abstract»

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  • Availability modeling and validation methodology for RS/6000 systems

    Publication Year: 1999, Page(s):305 - 309
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    In this paper we show the availability modeling and validation methodology for RS/6000 systems. The availability modeling methodology is used both for prediction of availability characteristics of systems under development, and for the prediction of availability in the special bids process. The core of our methodology is the availability modeling tool-System Availability Estimator (SAVE)-currently... View full abstract»

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  • System reliability analysis of an embedded hardware/software system using fault trees

    Publication Year: 1999, Page(s):135 - 141
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    The use of fault trees allows for the unified modeling of embedded hardware/software systems. Fault trees can also produce a sensitivity analysis to provide insight as to which hardware and software components are potentially the most problematic for a given system. From this analysis, the effects that the various hardware and software components have on the overall system reliability can be quant... View full abstract»

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  • A new method of hard disk drive MTTF projection using data from an early life test

    Publication Year: 1999, Page(s):252 - 257
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    Traditionally, the exponential and the Weibull distribution approaches have been mainly used in the hard disk drive (HDD) industry to evaluate mean time to failure (MTTF) from a life test in which only early failures may be observed. This paper proposes an approach for projecting disk drive field MTTF using a two-phase bathtub curve failure rate function. Based on this 2-phase bathtub curve failur... View full abstract»

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  • Disturbance analysis using a system bond-graph model

    Publication Year: 1999, Page(s):358 - 364
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (556 KB)

    Conventional failure effect analysis depends on the expert's judgement and experience, which may lead to an erroneous result. To solve this problem, this paper proposes a failure effect analysis using bond-graphs, which represent the system behavior in a unified way from the viewpoint of energy flow. The system state equations obtained from a system bond-graph represent the system behavior in the ... View full abstract»

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  • Software reliability cases: the bridge between hardware, software and system safety and reliability

    Publication Year: 1999, Page(s):396 - 402
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    High integrity/high consequence systems must be safe and reliable; hence it is only logical that both software safety and software reliability cases should be developed. Risk assessments in safety cases evaluate the severity of the consequences of a hazard and the likelihood of it occurring. The likelihood is directly related to system and software reliability predictions. Software reliability cas... View full abstract»

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  • Rocket-engine control-system reliability-enhancement analysis

    Publication Year: 1999, Page(s):1 - 6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1420 KB)

    This paper presents a case study analysis of the process used in identifying and quantifying redesign improvements to enhance the mission reliability of an existing rocket engine. As part of a reliability enhancement program, the historical drivers of unreliability within the system must first be understood. Based on this information, design improvements can then be identified which will provide t... View full abstract»

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  • Step-by-step accelerated testing

    Publication Year: 1999, Page(s):57 - 61
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    One important aspect of accelerated testing (AT) is the step-by-step strategy that can help obtain accurate and rapid initial information as results of product testing for reliability problems solving. The author demonstrates that successful AT uses the simulation of input influences on the product in a simultaneous combination, connection and interaction as experienced in the field. Basic to the ... View full abstract»

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  • Reliability prediction using the concept of relevant-condition parameters

    Publication Year: 1999, Page(s):32 - 37
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    The classical approach to the calculation of reliability characteristics is based on the probability distribution of time to failure. Recently, a new approach based on relevant condition parameter was introduced, which describes the condition of the system and calculates the reliability characteristics at every instant of operating time. A condition parameter could be any characteristic such as cr... View full abstract»

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  • Bayesian analysis for system reliability inferences

    Publication Year: 1999, Page(s):151 - 157
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    Due to declining defense budgets, operational test and evaluation programs for military systems have been down-one significant result is less system operational test data. This leads to lower classical confidence inferences on critical measures of performance such as system reliability. This paper explores the use of Bayesian methods to compensate for this decrease in test data by integrating deve... View full abstract»

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  • Uncertainty considerations in compliance-testing for electromagnetic interference

    Publication Year: 1999, Page(s):265 - 268
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    Product assurance aims at manufacturing and marketing products that meet the requirements of the customer and the regulatory authorities, thus meeting the requirements of society at large. This involves manufacturing, testing and certification of the product. Thus the product assurance actually involves the manufacturers, testing laboratories, certification bodies directly and standardisation bodi... View full abstract»

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