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Reliability and Maintainability Symposium, 1992. Proceedings., Annual

Date 21-23 Jan. 1992

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Displaying Results 1 - 25 of 81
  • Annual Reliability and Maintainability Symposium. 1992 Proceedings (Cat. No.92CH3108-8)

    Publication Year: 1992
    Request permission for commercial reuse | PDF file iconPDF (8 KB)
    Freely Available from IEEE
  • Modeling and simulation for reliability prediction of implantable cardiac pacemakers

    Publication Year: 1992, Page(s):53 - 57
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The authors illustrate a reliability simulation method used for implantable cardiac pacemakers, and show how such activities influence the product design and warranty strategy. The reliability of a product can be estimated with available techniques during the product development cycle. Accuracy of the reliability predictions can be achieved, but is dependent on the validity and accuracy of the his... View full abstract»

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  • A product-cycle cost-analysis process and its application to the automotive environment

    Publication Year: 1992, Page(s):422 - 425
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    The author presents a life cycle cost (LCC) methodology which combines reliability engineering and cost accounting techniques to facilitate evaluation of short and long-term product effectiveness early in the development cycle. Product LCC analysis is an approach that helps to address possible warranty expenses and cost savings associated with a particular design for a designated operating life. I... View full abstract»

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  • Future role of NASA R&M assurance in space flight exploration

    Publication Year: 1992, Page(s):239 - 240
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    The NASA Office of Safety and Mission Quality has introduced several R&M (reliability and maintainability) initiatives to address future program and mission requirements. The overall objective is to ensure that R&M criteria and activities are integrated as early as possible in the design phase. A representative cross-section of the major initiatives is given View full abstract»

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  • Future role of ESA R&M assurance in space flight exploration

    Publication Year: 1992, Page(s):241 - 242
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (108 KB)

    Future ESA (European Space Agency) planning with regard to R&M (reliability and maintainability) assurance is examined. The author believes that one should move steadily and rigorously ahead in the assurance sciences, ensuring that one always understands the failure mechanism level, and that one should proceed in traceable and risk-defined increments to total system and technology peripheries.... View full abstract»

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  • Automatic translation of digraph to fault-tree models

    Publication Year: 1992, Page(s):354 - 362
    Cited by:  Papers (9)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    The author presents a technique for converting digraph models, including those models containing cycles, to a fault-tree format. A computer program which automatically performs this translation using an object-oriented representation of the models has been developed. The fault-trees resulting from translations can be used for fault-tree analysis and diagnosis. Programs to calculate fault-tree and ... View full abstract»

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  • Desert Storm environmental effects

    Publication Year: 1992, Page(s):249 - 252
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    It is noted that after more than six months of operation of the Patriot launch station in the Saudi Arabian desert no problems that were attributed to high temperature occurred. The environmental anomalies that did occur were cosmetic in nature and related to dust and salt fog. It was concluded that the Desert Storm environmental effects were typical of worldwide hot, dry climates View full abstract»

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  • Piece-part reliability-allocation using actual failure data

    Publication Year: 1992, Page(s):119 - 125
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    The author documents the piece part failure assessment and predominant failure mode analyses performed on the US Strategic Petroleum Reserve (SPR) sites to provide piece part failure rates for the various classes of equipment. These data would then be used in a stock-level-allocation-model to determine the number of spares that should be stocked to meet particular mission requirements such as stoc... View full abstract»

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  • Lessons learned from evaluating launch-site processing problems of Space Shuttle payloads

    Publication Year: 1992, Page(s):259 - 265
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    The authors discuss a trend analysis program that is being conducted on the problem reports written during the processing of Space Shuttle payloads at Kennedy Space Center. The program is aimed at developing lessons learned that can both improve the effectiveness of the current payload processing cycles as well as help to guide the processing strategies for Space Station Freedom. The payload proce... View full abstract»

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  • Redundancy design philosophy for catastrophic loss protection

    Publication Year: 1992, Page(s):1 - 4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    To ensure high flight safety and mission reliability in flight-critical electronics of aerospace vehicles, a redundancy design technique named brick wall is discussed. Basically, the technique proposes triplex redundant, independent paths where each path can self-monitor its own health (by using a comparison scheme within each path). Upon a fault detection, the whole path is taken offline. The inh... View full abstract»

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  • Generation of models for reliability growth

    Publication Year: 1992, Page(s):299 - 302
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The author considers computerized reliability growth model generation based on the development of Petri nets. The proposed method makes it possible to show and investigate the main aspects of debugging using the following techniques: time-variable stochastic mechanism of manifestation and removal of already existing errors and new errors introduced in the debugging process; time and probability ch... View full abstract»

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  • A smart failure mode and effect analysis package

    Publication Year: 1992, Page(s):414 - 421
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    A methodology combining the benefits of matrix FMEA (failure modes and effects analysis) and the risk priority number (RPN) technique is presented. The matrix approach is improved to provide an organized and traceable analysis from the piece part failure mode through all indenture levels to system-level failure effects. First, a single synthesized matrix capable of modeling an entire system and st... View full abstract»

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  • A testability-dependent maintainability-prediction technique

    Publication Year: 1992, Page(s):223 - 227
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    The authors outline a novel mean-time-to-repair (MTTR) prediction technique which is a modification of MIL-HDBK-472 procedure V. The modifications directly relate testability characteristics to maintainability parameters and introduce the influence that different maintenance and repair philosophies have on MTTR. A computerized version of this technique is also discussed. Future plans include propo... View full abstract»

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  • Effective maintenance practices to manage system aging

    Publication Year: 1992, Page(s):166 - 170
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    A study for the Nuclear Regulatory Commission was recently undertaken to identify effective maintenance practices that could be adapted by the nuclear industry in the United States to assist in managing the aging degradation of plant systems and components. Four organizations were examined to assess the influence of maintenance programs on addressing the system and component aging degradation issu... View full abstract»

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  • The Shuttle Processing Contractors (SPC) reliability program at the Kennedy Space Center; the real world

    Publication Year: 1992, Page(s):376 - 378
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    The Shuttle Processing Contract (SPC) workforce consists of Lockheed Space Operations Co. as prime contractor, with Grumman, Thiokol Corporation, and Johnson Controls World Services as a subcontractors. During the design phase, reliability engineering is instrumental in influencing the development of systems that meet the Shuttle fail-safe program requirements. Reliability engineers accomplish thi... View full abstract»

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  • Introducing R&M and testability into the undergraduate system-design course

    Publication Year: 1992, Page(s):140 - 143
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    In October 1989 Florida Institute of Technology introduced reliability, maintainability, and testability (R/M/T) material into its three-quarter Electrical and Computer Engineering System Design course sequence. This course originally had senior-year students conceive, design, fabricate, test, and demonstrate a working prototype of their proposed projects. This R/M/T material provided an emphasis ... View full abstract»

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  • MSIX: a general and user-friendly platform for RAM analysis

    Publication Year: 1992, Page(s):501 - 505
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    The authors present a CAD (computer-aided design) platform supporting RAM (reliability, availability, and maintainability) analysis with efficient system description and alternative evaluation. The design concepts, implementation techniques, and application results are described. This platform is user-friendly because of its graphic environment, drawing facilities, object orientation, self-tutorin... View full abstract»

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  • Development of a generic fiber-optic cable repair-kit

    Publication Year: 1992, Page(s):407 - 413
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    Repairing fiber-optic cables so they remain operational in a tactical environment has been impossible due to the lack of commercially available repair hardware. Due to this deficiency, action was needed to design, develop, and test prototype repair hardware enclosed in a portable field kit capable of being used in a tactical/field environment. Repair hardware components enclosed in the kit include... View full abstract»

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  • Experimental-design techniques in reliability-growth assessment

    Publication Year: 1992, Page(s):322 - 326
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    Several recent statistical methods, including a Bayesian technique, have been proposed to detect the presence of significant effects in unreplicated factorials. It is recognized that these techniques were developed for s-normally distributed responses; and this may or may not be the case for times between failures. In fact, for homogeneous Poisson processes (HPPs), these times are exponen... View full abstract»

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  • Methods for communication-network reliability analysis: probabilistic graph reduction

    Publication Year: 1992, Page(s):441 - 448
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    The authors have designed and implemented a graph-reduction algorithm for computing the k-terminal reliability of an arbitrary network with possibly unreliable nodes. The two contributions of the present work are a version of the delta-y transformation for k-terminal reliability and an extension of Satyanarayana and Wood's polygon to chain transformations to handle graph... View full abstract»

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  • Temperature and vibration results from captive-store flight tests provide a reliability improvement tool

    Publication Year: 1992, Page(s):266 - 271
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The ALQ-131 electronic countermeasure (ECM) system has provided the United States Air Force with proven self-protection for many of its tactical fighter aircraft. The reliability and maintainability (R&M) improvements of the ALQ-131 Block II has produced a system with a mean time between failures (MTBF) of 120 to 180 h and greater than 95% availability for the 390 systems in theater during the... View full abstract»

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  • Reliability growth for typed defects [software development]

    Publication Year: 1992, Page(s):327 - 336
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    The authors present a reliability growth model for defects that have been categorized into defect types associated with specific stages in the software development process. Modeling the reliability growth of defects for each type separately allows identification of problems in the development process which may otherwise be masked when defects of all types are modeled together. The authors incorpor... View full abstract»

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  • Modeling maintenance-strategies with rainbow nets

    Publication Year: 1992, Page(s):449 - 455
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    The Rainbow net (RN) modeling technique offers a promising alternative to traditional reliability modeling techniques. RNs are evaluated through discrete event simulation. Using specialized tokens to represent systems and faults, an RN models the fault-handling behavior of an inventory of systems produced over time. In addition, a portion of the RN represents system repair and the vendor's spare p... View full abstract»

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  • Reliability techniques for combined hardware/software systems

    Publication Year: 1992, Page(s):290 - 293
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    A study was conducted to develop practical techniques for reliability modeling, allocation, prediction, growth testing, and demonstration testing of systems that contain both hardware and software elements. A large part of the research addressed the use of software product/process metrics to predict software reliability. The study culminated in the preparation of a draft MIL-HDBK on hardware/softw... View full abstract»

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  • Total-dose hardness assurance-testing for CMOS devices in space environment

    Publication Year: 1992, Page(s):202 - 209
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    A practical method for total-dose hardness assurance testing for CMOS devices in a space environment is presented to predict the radiation-induced threshold voltage shift and leakage current. Simple radiation response models for the threshold voltage shift and leakage current are given. The model parameters can be determined by laboratory irradiation testing with Co-60 gamma-rays at a high dose ra... View full abstract»

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