Proceedings of 1996 Annual Reliability and Maintainability Symposium最新文献

Collective approach for modeling complex system failures 复杂系统故障建模的集体方法

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500675

Siang-Ying Choy, J. English, T. L. Landers, Li Yan

{"title":"Collective approach for modeling complex system failures","authors":"Siang-Ying Choy, J. English, T. L. Landers, Li Yan","doi":"10.1109/RAMS.1996.500675","DOIUrl":"https://doi.org/10.1109/RAMS.1996.500675","url":null,"abstract":"This paper defines the functional requirements of a computerized decision support system (DSS) necessary to serve as a working tool in assisting the reliability engineer in equipment repair/replacement management of material handling equipment. It incorporates the knowledge required to build analytical models of complex material handling systems using known techniques of system modeling. The system can be used to guide the data analysis and statistical modeling for both repairable and nonrepairable systems. This project aims at bridging the existing gap between the reliability theory and practical applications in the field of reliability engineering. A prototype of this computerized system is being developed (to be tested at research sponsors locations). The nonhomogenous Poisson process (NHPP), renewal process, Prentice, Williams and Peterson (PWP) model and proportional hazards models are implemented accordingly in this project. The complete knowledge base addresses both parametric and nonparametric methods of reliability estimation. An additional focus of this project involves research on the left-truncated power law intensity model for cases where the early lifetime data are missing. The software is being developed to support each of these models. Case studies are conducted based upon the failure data of industrial forklift trucks. These analyses are being utilized to verify the design of the DSS. In the presentation, we present the organization of the DSS and present one of the case studies.","PeriodicalId":393833,"journal":{"name":"Proceedings of 1996 Annual Reliability and Maintainability Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115677993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Computational methods for reliability data analysis 可靠性数据分析的计算方法

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500676

G. Johnston

引用次数: 4

An ordering heuristic for building binary decision diagrams from fault-trees 从故障树中构建二叉决策图的排序启发式方法

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500664

Marc Bouissou

{"title":"An ordering heuristic for building binary decision diagrams from fault-trees","authors":"Marc Bouissou","doi":"10.1109/RAMS.1996.500664","DOIUrl":"https://doi.org/10.1109/RAMS.1996.500664","url":null,"abstract":"Binary decision diagrams (BDD) have made a noticeable entry in the RAMS field. This kind of representation for Boolean functions makes possible the assessment of complex fault-trees, both qualitatively (minimal cutsets search) and quantitatively (exact calculation top event probability). Any Boolean function, and in particular any fault-tree, whether coherent or not, can be represented by a BDD. The BDD is a canonical representation of the function, as soon as one has chosen a variable (i.e., in the fault-tree case, basic event) ordering. Tools based on the use of BDDs, like METAPRIME, or ARALIA, can in some cases give more accurate results than conventional tools, while running 1000 times faster. EDF has investigated this kind of technology, and tested METAPRIME, ARALIA, and other tools based on BDDs, in the framework of cooperations with the BULL company and with the Bordeaux University. These tests have demonstrated that the size of the BDD, that has to be built thoroughly before any kind of assessment can begin, is dramatically sensitive to the ordering chosen for the variables. For a given fault-tree, this size may vary by several orders of magnitude. This can lead to excessive needs, both in terms of memory and CPU time. The problem of finding an optimal ordering being untractable for real applications, many heuristics have been proposed, in order to find acceptable orderings, at low cost (in terms of computing requirements).","PeriodicalId":393833,"journal":{"name":"Proceedings of 1996 Annual Reliability and Maintainability Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125886204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 64

Space Shuttle program risk management 航天飞机项目风险管理

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500653

J. Fragola

引用次数: 8

Reliability development and improvement of a medical instrument 医疗器械可靠性的开发与改进

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500668

J. A. McLinn

{"title":"Reliability development and improvement of a medical instrument","authors":"J. A. McLinn","doi":"10.1109/RAMS.1996.500668","DOIUrl":"https://doi.org/10.1109/RAMS.1996.500668","url":null,"abstract":"A new medical blood analyzer (laboratory instrument) was designed, developed and readied for production. Near the end of this series of activities, ten prototype systems exhibited lower than desired reliability in a development test. It was unclear to the designers why this had occurred as \"the best design criteria\" were employed. A short, controlled, full life test was proposed as a means to quantify the probable types and frequency of failure. This paper details the reliability findings at this point as well as methods for improvement of the typical product. Some of the technical choices and tradeoffs for reliability, maintainability, field performance, costs and quality as well as engineering decisions associated with reliability and field support are identified. Close attention is paid to the identification of a small number of important reliability measures. The reliability, maintainability, support and improvement data should prove highly instructive for any commercial or consumer company wishing to justify starting or continuing the reliability improvement process. Benchmark data is presented to aid others in establishing progress points during development. The data represents a blend of several similar systems.","PeriodicalId":393833,"journal":{"name":"Proceedings of 1996 Annual Reliability and Maintainability Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129605472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effortless incremental design FMEA 轻松增量设计FMEA

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500640

C. Price

{"title":"Effortless incremental design FMEA","authors":"C. Price","doi":"10.1109/RAMS.1996.500640","DOIUrl":"https://doi.org/10.1109/RAMS.1996.500640","url":null,"abstract":"Design FMEA of electrical systems is a costly and labour intensive process. Ideally it would be done when the electrical system is first designed, and repeated whenever any change is made to the design. Because of the cost, this has not been possible in the past. This paper describes how an existing tool for automating electrical design failure mode and effects analysis (FMEA) can be augmented to make incremental design FMEA much less of a burden for the engineer. The tool is able to generate the effects for each failure mode and to assign significance values to the effects. The first time that it is run on a design, the engineer still has quite a lot of work to do, examining the results and deciding what actions need to be taken because of the FMEA. When a change is made to the circuit, the engineer runs the FMEA tool again and receives a new report. Because of the uniformity of the reports provided by the FMEA tool, it has proved possible to write software which sorts out the failure effects which have changed from the previous analysis and only report those results to the engineer. This makes examination of the repercussions of the incremental FMEA much less effort for the engineer, and makes it feasible to perform an incremental FMEA every time the design is amended.","PeriodicalId":393833,"journal":{"name":"Proceedings of 1996 Annual Reliability and Maintainability Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124548407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 49

Predicting operational availability for systems with redundant, repairable components and multiple sparing levels 预测具有冗余、可修复组件和多个备用级别的系统的操作可用性

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500679

B. Mitchell, R. Murry

引用次数: 5

Dependability standards: an international perspective 可靠性标准:国际视角

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500635

C. Benski

引用次数: 2

Applying logistic regression to maintenance data to establish inspection intervals 对维修数据进行逻辑回归，建立检查间隔

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500678

K.E. Spezzaferro

引用次数: 13

New burn-in methodology based on IC attributes, family IC burn-in data, and failure mechanism analysis 基于IC属性、家族IC老化数据和失效机制分析的新老化方法

Proceedings of 1996 Annual Reliability and Maintainability Symposium Pub Date : 1996-01-22 DOI: 10.1109/RAMS.1996.500661

Sut-Mui Tang

引用次数: 5