Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055)最新文献_第4页

Developing and testing algorithms for stopping testing, screening, run-in of large systems or programs 开发和测试算法，用于停止大型系统或程序的测试、筛选和运行

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816295

V. Loll

引用次数: 2

Reliability in today's business environment 当今商业环境中的可靠性

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816279

D. Crowe

引用次数: 0

Application of the NASA risk assessment tool to the evaluation of the Space Shuttle external tank re-welding process NASA风险评估工具在航天飞机外燃料箱再焊接过程评估中的应用

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816335

R. J. Mulvihill, F.M. Safie

{"title":"Application of the NASA risk assessment tool to the evaluation of the Space Shuttle external tank re-welding process","authors":"R. J. Mulvihill, F.M. Safie","doi":"10.1109/RAMS.2000.816335","DOIUrl":"https://doi.org/10.1109/RAMS.2000.816335","url":null,"abstract":"The current Space Shuttle external tank design is called the super light weight tank (SLWT). A weight reduction of approximately 30% was achieved relative to the prior design called the light weight tank (LWT). The new NASA risk assessment tool, the quantitative risk assessment system (QRAS), was used to compare the risk of the two designs. The comparison includes consideration of the apparent reduction of the design safety factor for SLWT welds when a weld repair is required. The risk models for the structural failure accident scenario include five initiating events (IEs): (1) liquid oxygen (LO2) tank component failure; (2) liquid hydrogen (LH2) tank component failure; (3) LO2 tank weld failure; (4) LH2 tank weld failure; and (5) intertank failure. Although the risk results for the LH2 and LO2 tank welds for IEs 2 and 4 are higher for the SLWT vs. the LWT, the reverse is true for tank components IEs 1, 3 and 5. The SLWT has a slightly lower risk of structural failure. The impact of this difference is not significant to the total risk when the other six scenarios are also included.","PeriodicalId":178321,"journal":{"name":"Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134457665","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: 2

AFR: problems of definition, calculation and measurement in a commercial environment AFR:商业环境下的定义、计算和测量问题

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816286

J. Elerath

{"title":"AFR: problems of definition, calculation and measurement in a commercial environment","authors":"J. Elerath","doi":"10.1109/RAMS.2000.816286","DOIUrl":"https://doi.org/10.1109/RAMS.2000.816286","url":null,"abstract":"Most commercial enterprises want a meaningful yet simple method for determining product reliability. \"Average\", \"annual\" or \"annualized\" failure rates are selected because of their apparent simplicity. All involve some sort of \"failure rate\" averaging over some period of time. All are abbreviated AFR even though there are no accepted industry standard definitions for these terms or the processes and conditions for their measurement. If the failure rate is not constant in time, creating an average can easily generate meaningless results. A number of businesses use the term \"failure rate\" but are in fact calculating probabilities or time independent percentages. A basic premise for this paper is that the true underlying product failure rates are not constant in time. This paper presents a detailed discussion of different ways commercial industries calculate simple failure rate based metrics. It identifies some ambiguities in the definitions and resultant inaccuracies. It will help the reliability pundit understand the mathematical considerations, making him more aware of potential problems. This paper should help generalists and managers understand that the AFR's they calculate may be significantly different than those calculated by their suppliers and customers. This can result in substantially different numbers and conclusions. Averaging instantaneous failure rates should be done only to smooth data collected from a distribution known to have a constant failure rate.","PeriodicalId":178321,"journal":{"name":"Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124525914","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: 20

Reliability test target development 可靠性测试目标开发

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816287

Ming-Wei Lu, R. Rudy

引用次数: 10

Specifying reliability in the disk drive industry: No more MTBF's 在磁盘驱动器行业中指定可靠性:不再有MTBF

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816306

J. Elerath

引用次数: 58

G-renewal process as a model for statistical warranty claim prediction g -续约过程作为统计保修索赔预测的模型

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816321

M. Kaminskiy, Vasiliy V. Krivtsov

{"title":"G-renewal process as a model for statistical warranty claim prediction","authors":"M. Kaminskiy, Vasiliy V. Krivtsov","doi":"10.1109/RAMS.2000.816321","DOIUrl":"https://doi.org/10.1109/RAMS.2000.816321","url":null,"abstract":"A brief overview of the statistical aspects of warranty prediction is given as an introduction. The main discussion then focuses on warranty claim prediction for repairable products. Introduced by Kijima and Sumita (1986), a g-renewal process (GRP) can be considered as a model for major repair assumptions encountered in repairable product reliability analysis. These assumptions include \"good-as-new\", \"same-as-old\", the intermediate \"better-than-old-but-worse-than-new\", and \"worse-than-old\". A statistical procedure is developed for estimation of the GRP parameter, which is suggested to have engineering meaning of the effectiveness of the repair actions. A practical example of the GRP application in statistical warranty prediction is given as an illustration of the proposed estimation method. The paper arrives to the following conclusions: The GRP provides high flexibility in modeling real life failure occurrence processes by covering major repair assumptions encountered in practice. A Monte Carlo simulation can be considered as a method for statistical estimation of the GRP. Warranty claim prediction based on GRP provides a higher accuracy compared to the ORP or the NHPP.","PeriodicalId":178321,"journal":{"name":"Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133099034","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: 48

A reliability development program for the Swedish industry 瑞典工业的可靠性发展计划

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816282

S. Vikman, A. Lonnqvist

{"title":"A reliability development program for the Swedish industry","authors":"S. Vikman, A. Lonnqvist","doi":"10.1109/RAMS.2000.816282","DOIUrl":"https://doi.org/10.1109/RAMS.2000.816282","url":null,"abstract":"A recent nationwide survey to the Swedish Engineering Industry disclosed that the understanding and use of reliability and safety methods by the small and medium sized companies on an average was distressingly low. Less than 30% of the smaller companies were familiar with reliability. In 1996, based on a survey and a following \"out-line study\", a new project was initiated by the Association of Swedish Engineering Industries, VI, and its Reliability Committee Te 5/2. The goal was to develop and document a program for \"cooperative reliability development by small and medium-sized companies of the Swedish industrial sector\". It will offer help to companies to initiate need based and local reliability work/activities. Starting point is an auditing/review of a company's existent process(es) and an audit of existing reliability status. Based on this, one will reach an understanding of in what way any \"down-to-the-floor\" simplified reliability-centered activity could be helpful. The final program will include necessary information and methods packages, training activities, expertise for managerial support and guidance during start-up and access to consultancy support where necessary for further implementation. This paper describes the project and its findings and illustrates the tools and methods developed for organizing individual down-to-the-floor reliability work programs by the industry.","PeriodicalId":178321,"journal":{"name":"Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114299801","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

Using benchmarking to introduce and improve reliability engineering 运用标杆管理引入和改进可靠性工程

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816288

M. Morelli

引用次数: 0

Reliability assessment from degradation data 基于退化数据的可靠性评估

Annual Reliability and Maintainability Symposium. 2000 Proceedings. International Symposium on Product Quality and Integrity (Cat. No.00CH37055) Pub Date : 2000-01-24 DOI: 10.1109/RAMS.2000.816300

V. Crk

引用次数: 99