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1988. Proceedings., Annual Reliability and Maintainability Symposium,

26-28 Jan. 1988

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Displaying Results 1 - 25 of 81
  • Annual Reliability and Maintainability Symposium. 1988 Proceedings (Cat. No.88CH2551-0)

    Publication Year: 1988
    Request permission for commercial reuse | PDF file iconPDF (26 KB)
    Freely Available from IEEE
  • Product assurance of PATRIOT air defense system

    Publication Year: 1988, Page(s):154 - 160
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (505 KB)

    PATRIOT is a highly sophisticated air-defense guided-missile system designed to be effective against aircraft representing the field army defense threat of the 1980s and 1990s. An overview is given of this comprehensive system which satisfies reliability, availability, and maintainability (RAM) analysis requirements and which now functions to monitor system performance and support related product ... View full abstract»

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  • The Tomahawk consolidated database

    Publication Year: 1988, Page(s):319 - 322
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    A consolidated database was developed for the Tomahawk cruise missiles project to store and automatically retrieve data from numerous production contractors, field activities, and repair facilities. A case study dealing with the design and implementation of the consolidated database is reported. Over 30 tracked components of each Tomahawk missile are followed through production, deployment, depot ... View full abstract»

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  • Unbiased reliability with one bit error correction

    Publication Year: 1988, Page(s):350 - 355
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    Leading error correction code (ECC) semiconductor memory reliability prediction models are reviewed. The concept of biasness is discussed. An unbiased model development methodology is introduced by using a sample model with eight failure modes. A step-by-step prediction procedure is also provided to enable readers to use the new sample model View full abstract»

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  • Contractor flight testing of cluster munitions

    Publication Year: 1988, Page(s):314 - 318
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    Contractor management and performance of air-dispensed munition tests is considered. The authors examine issues associated with scoring for reliability performance assessment, explosive ordnance disposal, identification and resolution of safety issues, coordination of high-explosive cluster munition air drops with subcontractor and Government agencies, establishment of pass/fail criteria, and fail... View full abstract»

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  • Parts renewal in continuous-time Monte Carlo reliability simulation

    Publication Year: 1988, Page(s):345 - 349
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    The simulation of complex multicomponent systems by Markov Monte Carlo methods has, to date, been limited to systems where system performance can be modeled by a time-inhomogeneous Markov process. This model is capable of including component dependencies as well as wear phenomenon represented by time-dependent failure rates. A discussion is presented of the formulation and implementation of a gene... View full abstract»

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  • A simulation program to model effects of logistics on R&M of complex systems

    Publication Year: 1988, Page(s):306 - 313
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    A simulation program (SIMULAV) is presented that is capable of modeling large-scale reliability systems. The program can model the effect of such logistics characteristics as inventory, transportation, and facilities on the reliability and availability of the system. The program is written in Pascal and it consists of three main elements: a process-oriented simulation language, a minimal cut-sets ... View full abstract»

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  • System reliability using binomial failure rate

    Publication Year: 1988, Page(s):136 - 138
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    A method is presented for calculating the reliability of a computer system subject to common-cause failures described by the binomial failure rate model. This model takes into account three types of shocks; shocks causing individual components to fail and common-cause shocks of both a nonfatal and a fatal type. The probability that all the components of each subsystem are good is computed. The sys... View full abstract»

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  • Development of a survivable tire

    Publication Year: 1988, Page(s):59 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    An overview is presented of military requirements for survivable tires. Results from the Tire Task Force published in the 'Tire R&D Program' in February 1986 are also discussed View full abstract»

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  • Impact of CR and BDAR on maintenance

    Publication Year: 1988, Page(s):184 - 189
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Combat resilience (CR) and battlefield damage assessment and repair (BDAR) are concepts which would provide NATO forces with increasing battlefield availability to counteract the numerical superiority of Warsaw Pack forces. However, live-firing trails have demonstrated that NATO weapons are not designed for rapid battlefield repair. Current maintenance systems must be reorganized and substantially... View full abstract»

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  • Expert system for test-incident scoring

    Publication Year: 1988, Page(s):340 - 344
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    The problem of determining the relevance and source of development test failures is solved using an expert-systems approach. The appropriateness of this approach is discussed and the application of the technique is described. This includes a description of the process of knowledge extraction, a discussion of the representation form chosen, and the description of the actual system and its implement... View full abstract»

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  • Software system safety and reliability

    Publication Year: 1988, Page(s):214 - 217
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    The emerging discipline of software system safety is considered. The issues discussed are: methodology, application criteria, and phasing of activities during each phase of system design. The authors show how a systems approach to software safety and reliability enhances program effectiveness and reduces costs View full abstract»

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  • Reliability impacts of multiple-bit-per-chip RAMs

    Publication Year: 1988, Page(s):302 - 305
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    The author considers the need to use error-correcting codes which have the same efficiency of the traditional single-bit-error-correcting and double-bit-error-detecting (SBEC-DBED) codes but which can be used with the current multiple-bit-per-chip organizations. A short summary is presented of memory chip and memory card configurations along with common chip failure modes and how SBEC-DBED and DBE... View full abstract»

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  • MTBF specification in a multiple use environment

    Publication Year: 1988, Page(s):132 - 135
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    A criterion, in the form of an equivalent failure rate equation, is developed which allows for the mean time between failures (MTBF) specification of a configuration item that is used in different environments and subject to a varying amount of operational stress. The degree of stress is formulated as a function of the output state, time spent in that state, and a corresponding duty cycle. A metho... View full abstract»

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  • The impact of commonality on battle damage assessment and repair in the armored family of vehicles

    Publication Year: 1988, Page(s):51 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The armored family of vehicles (AFV) is a US Army program to design and field the next generation of armored tracked vehicles as a single system. Encompassing twenty-six different vehicle configurations, the AFV places special emphasis on commonality in the design. It is currently in the concept definition phase. Work which examines the impact that component commonality has on battle damage repair... View full abstract»

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  • Battle damage repair-what's new?

    Publication Year: 1988, Page(s):178 - 183
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    The improvised repair of battle damage to military equipment on the battlefield is a vital part of a repair strategy and one that can win battles. Such battle damage repair (BDR), although improvised, should be carefully planned for, and technicians must be schooled and trained in the special techniques required. While much can be done on the battlefield, BDR can be considerably enhanced during th... View full abstract»

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  • R&M design influence from spreadsheet analysis

    Publication Year: 1988, Page(s):336 - 339
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    The authors describe a computer-aided analysis method using commercially available software to provide quick estimates needed to support reliability and maintainability (R&M) decisions during the early stages of a development program. The method is equally applicable to both military and commercial contracts. The method utilizes fragmentary existing data supplemented by flexible estimating fac... View full abstract»

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  • Selecting an appropriate model for software reliability

    Publication Year: 1988, Page(s):208 - 213
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    Three models which have distinct approaches to predicting software reliability are discussed. Model A, the mean time to failure (MTTF) error-correction model, implements the viewpoint of reliability based on the number of software errors corrected. Model B, the MTTF error-detection model, uses elapsed testing time and the number of errors detected as the basis for the prediction. Model C is a simu... View full abstract»

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  • Computer-aided reliability diagnostic system

    Publication Year: 1988, Page(s):8 - 10
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    Reliability, maintainability, and supportability are key elements of design assurance which have, until recently, been overshadowed by cost, schedule, and performance factors. Both military and commercial customers are now demanding that these design assurance elements become part of the up-front design process. An electronics design analysis expert system recently developed by General Dynamics Sp... View full abstract»

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  • Reliability growth estimation with missing data. II

    Publication Year: 1988, Page(s):248 - 253
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    In the analysis of a set of reliability growth data, it may happen that the failure information reported over some interval of test time is determined to be incorrect. This situation may take the form of too many or too few failures being reported. If these data are used in the analysis, the result may be distorted estimates of the growth rate and current system reliability. A practical reliabilit... View full abstract»

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  • MIL-STD-781C fixed time test: effect of redundancy

    Publication Year: 1988, Page(s):297 - 301
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    When a fixed-time test is used to demonstrate the mean time between failures (MTBF) of a system containing redundancy, the α and β risks vary as a function of MTBF and also as a function of the percentage of redundancy within the system and the number of systems being tested. An algorithm is presented for calculating the probability of zero to five system failures during a fixed-time re... View full abstract»

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  • Reliability modes for mechanical equipment

    Publication Year: 1988, Page(s):127 - 131
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    A reliability prediction technique for mechanical equipment is described that enables a designer to quantify the effects of varying design and operational constraints on a mechanical component's failure rate. The designer can then implement design changes to improve the systems' reliability before fabrication begins. In addition, reliability information identified by this procedure during design c... View full abstract»

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  • US Army mechanical RAMCAD models

    Publication Year: 1988, Page(s):144 - 146
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    The US Department of Defense has begun to emphasize the need for improved design techniques that can be implemented early in the development of potential weapon systems. This need has been driven by requirements for more capable military hardware that can be requirements for more capable military hardware that can be delivered to the field quicker while minimizing total life cycle costs. To accomp... View full abstract»

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  • Aramid liners as armor augmentation

    Publication Year: 1988, Page(s):68 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    Improvements in delivery accuracy of large-caliber munitions have increased their threat to fleets of light armored vehicles and equipment shelters. It is suggested that the ballistic protection of such vehicles can be augmented by the use of aramid liners (or some combination of liners and applique armor) made of a combination of ceramics and aramid fabrics. Spaced aramid liners are thought to be... View full abstract»

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  • Automated generation of reliability models

    Publication Year: 1988, Page(s):17 - 22
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    The abstract semi-Markov specification interface to the SURE (Semi-Markov Range Evaluator) tool (ASSIST) program allows the user to describe a Markov model in a high-level language. Instead of listing the individual states of the model, the user specifies rules governing the behavior of the system, which are used to automatically generate the model. A small number of statements in the abstract lan... View full abstract»

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