Annual Reliability and Maintainability Symposium 1995 Proceedings

16-19 Jan. 1995

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  • Annual Reliability and Maintainability Symposium 1995 Proceedings

    Publication Year: 1995
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    Freely Available from IEEE
  • The P.K. McElroy Award for Best Paper

    Publication Year: 1995
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  • Author index

    Publication Year: 1995
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  • Cumulatlive Indexes

    Publication Year: 1995
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  • Equipment life: can we afford to extend it?

    Publication Year: 1995, Page(s):529 - 535
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    Almost without exception, military equipments remain in service beyond their original planned lives. This paper shows how the ability to extend life is greatly influenced by early project decisions. It describes how the identification and management of life-related risks provides a realistic framework on which to plan an equipment's future. It demonstrates how different procurement strategies deli... View full abstract»

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  • Mass-transit system service quality: tradeoff analysis on reliability, maintainability and logistics

    Publication Year: 1995, Page(s):515 - 528
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (828 KB)

    Service quality is influenced not only by intrinsic reliability and maintainability but also by logistical factors such as: the number of operations reserves of spare trains; the number of repair facilities; fleet size; average recovery times after perturbations; and spare parts. Operators are looking for service quality commitments from manufacturers. However, only intrinsic reliability and maint... View full abstract»

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  • 6000 meters of reliability

    Publication Year: 1995, Page(s):510 - 514
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Development, prototype build and sea test of an advanced 24 bit digital acoustic array, in a 2" diameter package, was completed in only 18 months. The array features much improved and simplified handling since 100 meter section takes considerably less volume when on the deck of a ship, tows with less tension and weighs less than half of existing 3" diameter arrays. Reliability and availability pre... View full abstract»

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  • Innovations in military spares analysis

    Publication Year: 1995, Page(s):397 - 401
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The US Defense Secretary hopes to reap savings in the order of $30 billion with procurement reform. He admits that one of his toughest challenges will be to nurture and sustain America's technological edge, which he sees as a necessity in a period of declining force levels, during a time of declining budgets. With these thoughts in mind Science Applications International Corporation (SAIC) took th... View full abstract»

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  • Reliability program for neonatal intensive care equipment

    Publication Year: 1995, Page(s):457 - 459
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    The reliability of infant care products requites a comprehensive, detailed approach to product development and reliability assessment. This paper presents a reliability program for infant care products, and is designed to meet the rigorous demands of patient care, FDA and ISO 9001 quality systems View full abstract»

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  • Advances in human-error evaluation

    Publication Year: 1995, Page(s):502 - 509
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    This paper discusses an approach which places the proper focus upon latent events and the consideration of the “compelling signals” given to operators for actions which may trigger potential accident scenarios. These findings are based upon years of research into the fundamentals of the human cognition process. In particular, it has involved detailed investigations into the interaction... View full abstract»

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  • Operational availability modeling for risk and impact analysis

    Publication Year: 1995, Page(s):391 - 396
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    Availability is a system performance parameter which provides insight into the probability that an item or system will be available to be committed to a specified requirement. Depending on the application, availability can be defined to include reliability, maintainability and logistic support information. For fleet management purposes, the ability to quantify availability in terms of all of its c... View full abstract»

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  • Applying fuzzy cognitive-maps knowledge-representation to failure modes effects analysis

    Publication Year: 1995, Page(s):450 - 456
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    A failure mode and effects analysis (FMEA) seeks to determine how a system will behave in the event of a device failure. It involves the integration of several expert tasks to select components for analysis, determine failure modes, predict failure effects, propose corrective actions, etc. During an FMEA, numerical values are often not available or applicable and qualitative thresholds and linguis... View full abstract»

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  • Exploratory research on nonthermal damage to electronics from fires and fire-suppression agents

    Publication Year: 1995, Page(s):1 - 6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    Electronic equipment is expected to operate reliably under normal conditions as well as under foreseeable abnormal conditions, particularly in life-critical and environmentally sensitive applications. One foreseeable abnormal condition to which electronic equipment may be subjected at least once during its life-cycle is a fire environment. Such an environment may include the thermal and corrosive ... View full abstract»

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  • Avoiding safety-management errors in the next generation

    Publication Year: 1995, Page(s):496 - 501
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    This paper provides discussion items identifying safety management errors which should be unacceptable to safety management, particularly in the next generation due to the fact that the costs of noncompliance are simply too high. Safety management failures can be the final basis of program termination if there is a failure to properly analyze subsystems. Without the protection of proper hazard con... View full abstract»

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  • A simple method for predicting the cumulative failures of consumer products during the warranty period

    Publication Year: 1995, Page(s):384 - 390
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    In the design and manufacturing of both consumer and commercial products, an important design criteria is the length of the warranty period measured in calendar time. It is very important to know the expected number of failures during the warranty period. This paper provides an engineering tool that will predict the cumulative failures over the warranty period based on laboratory life data and the... View full abstract»

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  • Combining single-event latchup and reliability requirements for space vehicles

    Publication Year: 1995, Page(s):445 - 449
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    In this paper, the authors suggest the consideration of destructive single-event latchup (SEL) as an additional failure mode for components in space systems. With this orientation, the failure rate for this process can be combined with the standard failure analysis to obtain a composite failure rate prediction. This paper shows how SEL can be included in the standard reliability formalism and how ... View full abstract»

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  • Environmental stress screening strategies for multi-component systems with Weibull failure-times and imperfect failure detection

    Publication Year: 1995, Page(s):223 - 232
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB)

    Environmental stress screening (ESS) is employed to reduce, if not eliminate, the occurrence of early field failures. In this paper, a general two-level ESS model is presented for a multi-component electronic system. Screening is performed at the component and unit level. Components and connections are assumed to come from good and substandard populations and their time-to-failure distributions ar... View full abstract»

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  • Application of test effectiveness in spacecraft testing

    Publication Year: 1995, Page(s):486 - 495
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (932 KB)

    This article summarizes test design practices of selected NASA Centers and prime contractors as they are used to evaluate the performance and reliability of space mission payloads. It also reports the use of previous relevant test experience to avoid risk in the design of future spacecraft and enhance test programs. Test effectiveness (TE) is defined as the ability of a test to accurately emulate ... View full abstract»

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  • Modeling silent failures in telecommunications systems

    Publication Year: 1995, Page(s):261 - 264
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    A silent failure is a condition in a telecommunications or other system which, when it occurs, remains undetected by normal fault detection methods. With the steady state Markov models that are usually used to predict telecommunications system reliability, estimates of downtime of systems with silent failures may be substantially higher than actual system downtime. This is due to the fact that a s... View full abstract»

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  • Assessing mixture-model goodness-of-fit with an application to automobile warranty data

    Publication Year: 1995, Page(s):378 - 383
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    Changing market conditions and improved manufacturing quality are reflected in recent extensions of automobile warranty coverage from 12 month/12,000 miles to 5 years/50,000 miles and better. The reliability engineer's challenge to predict future warranty claims over a longer lifetime becomes even more difficult as the number of possible causal factors evolve from the “vital few” assoc... View full abstract»

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  • Empirical validation of availability models for the RISC System/6000 workstation using survey and measurement data

    Publication Year: 1995, Page(s):439 - 444
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    We show an empirically driven process to validate the availability models of RISC System/6000 workstations. The empirical data is obtained by tracking RISC System/6000 workstations in the field. The tracking data is obtained by using customer surveys and by using an availability measurement tool installed on selected running systems. We model several types of RISC System/6000 workstations using th... View full abstract»

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  • A modified bathtub curve with latent failures

    Publication Year: 1995, Page(s):217 - 222
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    Burn-in and stress screening are becoming increasingly popular in the commercial electronics industry as customers become increasingly sensitive to failures occurring in the useful life of a product or system. For example, thermal stress screening (TSS) is an assembly-level electronics manufacturing process that evolved from the burn-in processes used in NASA and DoD programs. While burn-in subjec... View full abstract»

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  • On reliability growth testing

    Publication Year: 1995, Page(s):162 - 165
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Reliability development growth testing (RDGT) is the most common method used to improve equipment reliability. The author had an opportunity to perform an analysis of hardware that experienced environmental stress screening (ESS), environmental qualification testing (EQT), RDGT and field usage. The failure mode and corrective action data were used to qualitatively assess the effectiveness of RDGT ... View full abstract»

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  • A decision-support approach for the design of human-machine systems and processes

    Publication Year: 1995, Page(s):321 - 326
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    The Reliable Human-Machine System Developer (REHMS-D) is a major advance in system and reliability engineering that has broad application. By means of a new human reliability model and a six-stage system engineering process, the REHMS-D decision support approach guides the designer through the synthesis of system or process human functions in a manner that results in a system or process that meets... View full abstract»

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  • Vibration fatigue of surface mount technology (SMT) solder joints

    Publication Year: 1995, Page(s):18 - 26
    Cited by:  Papers (16)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    Recent trends in reliability analysis of electronics has involved developing structural integrity models for predicting the failure free operating lifetime under vibratory and thermal environmental exposure. This paper describes a test program which was performed to obtain structural fatigue data for SMT solder joints exposed to a random vibration environment. A total of eight printed circuit boar... View full abstract»

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