2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS)最新文献_第2页

Temperature acceleration models in reliability predictions: Justification & improvements 可靠性预测中的温度加速模型:论证与改进

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5448028

F. Bayle, A. Mettas

引用次数: 52

Feasibility of provisioning spares using reliability software programs 使用可靠性软件程序发放备件的可行性

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5448065

Reuben A. Mann, Peter C. Rich

引用次数: 0

SEU concept to reality (allocation, prediction, mitigation) 从SEU概念到现实(分配、预测、缓解)

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5448078

N. Bidokhti

引用次数: 23

Optimal design of step stress accelerated degradation test and reliability assessment for quartz flexible accelerometers 石英挠性加速度计阶跃应力加速退化试验优化设计及可靠性评估

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5448018

Huiguo Zhang, Yunxia Chen, R. Kang

{"title":"Optimal design of step stress accelerated degradation test and reliability assessment for quartz flexible accelerometers","authors":"Huiguo Zhang, Yunxia Chen, R. Kang","doi":"10.1109/RAMS.2010.5448018","DOIUrl":"https://doi.org/10.1109/RAMS.2010.5448018","url":null,"abstract":"This paper presents a optimal design approach of step stress accelerated degradation test (SSADT) for quartz flexible accelerometers under the assumption that the degradation of each accelerometer follows a Wiener process and the degradation rate at different stress levels satisfies an Arrhenius function. The asymptotic variance of the pth percentile of lifetime is adopted as optimization objective and its expression formula is provided using the maximum likelihood estimate (MLE) method. The total experimental cost is chosen as a constraint with its expression formula provided. An algorithm is stated to solve the optimal design problem and a Monte Carlo simulation optimization program is developed based on the algorithm. Then, the optimal test plan is obtained after determining the optimization parameters and the SSADT is conducted based on the optimal test plan. At the end of this paper, using SSADT result data, the reliability of quartz flexible accelerometers is assessed by statistical analysis technique of Wiener process and inverse Gaussian distribution (IGD).","PeriodicalId":299782,"journal":{"name":"2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130962897","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: 4

Analyzing failure frequency and severity in communication networks 分析通信网络故障的频率和严重程度

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5447990

T. Matsukawa, H. Funakoshi

引用次数: 9

Spare part inventory control driven by condition based maintenance 基于状态维护的备件库存控制

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5448059

H. Liao, Mitchell Rausch

{"title":"Spare part inventory control driven by condition based maintenance","authors":"H. Liao, Mitchell Rausch","doi":"10.1109/RAMS.2010.5448059","DOIUrl":"https://doi.org/10.1109/RAMS.2010.5448059","url":null,"abstract":"The ability to predict and prevent equipment failures is essential for managing a manufacturing process. Once failure symptoms are detected, timely maintenance needs to be performed with the support of required spare parts. However, the availability of spare parts often becomes the bottleneck of process throughput, and sometimes expensive emergency orders of spare parts have to be placed to meet a production due date. This paper addresses a joint production and spare part inventory control strategy driven by condition based maintenance (CBM) for a piece of manufacturing equipment with a critical unit. Specifically, the amount of degradation of the unit is monitored continuously during operation and used to drive replacement actions and spare part inventory control under both production lot size and due date constraints. A degradation limit maintenance policy and a base-stock spare part inventory control policy are integrated to manage the manufacturing process. The objective is to ascertain the service level for spare parts while minimizing the total operating cost. To determine the optimal base-stock level of spare parts and maintenance threshold, a two-stage approach using constrained least square approximation and simulation-based optimization techniques is developed. An automotive engine manufacturing process is provided to demonstrate the use of the proposed decision making strategy.","PeriodicalId":299782,"journal":{"name":"2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114276258","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: 19

Vehicle wide optimization of subsystem trade study option selection 整车优化子系统交易研究方案选择

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5448038

C. Mattenberger

引用次数: 2

Using electronic design automation throughout the product life cycle 在整个产品生命周期内采用电子设计自动化

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5447999

B. Stallard, M. Silverman

引用次数: 5

A conceptual model for “inherent reliability” for nuclear weapons 核武器“固有可靠性”的概念模型

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5447992

R. Bierbaum

引用次数: 5

Accurate modeling of shared components in high reliability applications 高可靠性应用中共享组件的精确建模

2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS) Pub Date : 2010-04-15 DOI: 10.1109/RAMS.2010.5447969

J. Bukowski, Chris O'Brien

{"title":"Accurate modeling of shared components in high reliability applications","authors":"J. Bukowski, Chris O'Brien","doi":"10.1109/RAMS.2010.5447969","DOIUrl":"https://doi.org/10.1109/RAMS.2010.5447969","url":null,"abstract":"This paper addresses how to model and evaluate the risk reduction factor (RRF) of safety instrumented systems (SIS) when one or more of the components in the SIS can cause the dangerous condition or hazard that the SIS is designed to protect against. Generally a failure that can cause a hazard is referred to as an initiating event (IE). International standards for SIS safety evaluation require that shared components either be prohibited or accurately modeled. Current practice generally falls into one of two extremes, ignoring any degradation of system reliability due to shared components or completely discounting any improvements in reliability as a result of redundancy created by the shared component. This paper shows how to accurately model shared components in an SIS and proposes a methodology for simplified modeling techniques when certain criteria are met. Ignoring the interaction of shared components can result in estimates of reliability being optimistic by a factor of 2 or more. Conversely, taking no credit for the redundancy created by the shared component results in estimates of reliability that can be overly pessimistic. Several examples modeling shared components with varying degrees of independence illustrate the impact on overall system reliability.","PeriodicalId":299782,"journal":{"name":"2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133129396","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