Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318)最新文献_第6页

Reliability quantification of induction motors-accelerated degradation testing approach 感应电机可靠性量化——加速退化试验方法

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981662

Wendai Wang, D. Dragomir-Daescu

{"title":"Reliability quantification of induction motors-accelerated degradation testing approach","authors":"Wendai Wang, D. Dragomir-Daescu","doi":"10.1109/RAMS.2002.981662","DOIUrl":"https://doi.org/10.1109/RAMS.2002.981662","url":null,"abstract":"Characterizing life of cheap, highly reliable devices, such as small induction motors, is a challenge due to cost and time restriction. Accelerated degradation testing (ADT) provides a way to predict its life cost- and time-effectively. Having time tracking on degradation signals within relatively short test duration, the reliability can be estimated through accelerated degradation testing, even without any failures. ADT on induction motors have been conducted in the GE R&D Center to quantify the motor reliability. A new degradation index, the Orbit Area, for the induction motors is proposed, which turns out to be one of the most reliable indices for time tracking motor bearing wear. Signal processing method for extracting this degradation index from measured signals was developed. A time-to-degradation model is constructed based on the physics of failure and test observations. Maximum likelihood estimation is employed to analyze test data. The reliability of the motors is finally predicted through the obtained degradation model. Several issues regarding ADT and lessons learned are also discussed in the paper.","PeriodicalId":395613,"journal":{"name":"Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125051990","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: 47

Intellectual capital: utilizing the Web for knowledge management and data utilization in reliability engineering 知识资本:在可靠性工程中利用Web进行知识管理和数据利用

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981671

A. Mettas, D. Rock

{"title":"Intellectual capital: utilizing the Web for knowledge management and data utilization in reliability engineering","authors":"A. Mettas, D. Rock","doi":"10.1109/RAMS.2002.981671","DOIUrl":"https://doi.org/10.1109/RAMS.2002.981671","url":null,"abstract":"Intellectual capital is one of the most important assets in successful companies. An important part of this intellectual capital is the product quality and reliability intellectual capital that is comprised of \"lessons learned\", corrective actions taken, best practices, data regarding customer perception and customer feedback as it relates to different products, and most importantly accurate reliability metrics on deployed parts, components and systems. Managing this knowledge, experience and information should be a high priority in both large-scale and small-scale companies. This paper presents a description of the conception and implementation of three web-based systems for the management of reliability and quality information. These are: (1) a simple internal tracking system (ITS) developed to manage customer support and anomaly tracking data for a software development company; (2) the evolution of this concept into a more complex and powerful quality tracking and management system (QTMS) capable of meeting the failure reporting, corrective action and customer support needs of both large and small companies with diverse product lines and product configurations; (3) a Web-based reliability/quality dashboard for automated analysis and presentation of the reliability and quality data captured by systems like the ITS and QTMS. The three Web-based systems presented in this paper were initially developed by and used by ReliaSoft Corporation with great success and user acceptance. This success led to subsequent modifications, adaptations and deployments of similar systems at other companies.","PeriodicalId":395613,"journal":{"name":"Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125884634","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: 5

An integrated measure of software maintainability 软件可维护性的综合度量

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981648

K. Aggarwal, Yogendra Pratap Singh, J. Chhabra

{"title":"An integrated measure of software maintainability","authors":"K. Aggarwal, Yogendra Pratap Singh, J. Chhabra","doi":"10.1109/RAMS.2002.981648","DOIUrl":"https://doi.org/10.1109/RAMS.2002.981648","url":null,"abstract":"For large software systems, the maintenance phase tends to have comparatively much longer duration than all the previous life-cycle phases taken together, obviously resulting in much more effort. A good measure of software maintainability can help better manage the maintenance phase effort. Software maintainability cannot be adequately measured by only source code or by documents. The readability and understandability of both source code and documentation should be considered to measure the maintainability. This paper proposes an integrated measure of software maintainability. The paper also proposes a new representation for rule base of fuzzy models, which require less space for storage and will be efficient in finding the results in the simulation. The proposed model measures the software maintainability based on three important aspects of software-readability of source code (RSC), documentation quality (DOQ), and understandability of software (UOS). Keeping in view the nature of these parameters, a fuzzy approach has been used to integrate these three aspects. A new efficient representation of rule base has been proposed for fuzzy models. This integrated measurement of software maintainability, which to our knowledge is a first attempt to quantify integrated maintainability, is bound to be better than any other single parameter maintainability measurement approach. Thus the output of this model can advise the software project managers in judging the maintenance efforts of the software.","PeriodicalId":395613,"journal":{"name":"Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130290004","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: 166

A study of online maintenance practices at US nuclear plants 美国核电厂在线维修实践研究

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981611

J.C. Lin

引用次数: 1

Dynamic modeling of degradation data 退化数据的动态建模

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981709

Mingxiao Jiang, Yongcang Zhang

引用次数: 7

Application of semi-Markov process and CTMC to evaluation of UPS system availability 半马尔可夫过程和CTMC在UPS系统可用性评价中的应用

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981706

Liang Yin, R. M. Fricks, Kishor S. Trivedi

{"title":"Application of semi-Markov process and CTMC to evaluation of UPS system availability","authors":"Liang Yin, R. M. Fricks, Kishor S. Trivedi","doi":"10.1109/RAMS.2002.981706","DOIUrl":"https://doi.org/10.1109/RAMS.2002.981706","url":null,"abstract":"In this paper, the authors develop analytical models for the study of the dependability characteristics of systems with uninterruptible power supply (UPS) units. Dependability of systems with UPS cannot be modeled exactly using the prevalent Markov modeling approaches. They develop and solve two approximations to this problem. The first model assumes that battery units will be fully recharged before the next failure occurs. With this assumption, a semi-Markov process (SMP) model is developed and solved to provide formulae to compute availability measures (transient and steady-state), reliability and mean time to failure (MTTF). Another approximation based only on Markov modeling theory is then proposed. The authors show how all the measures can also be computed using the continuous-time Markov chain (CTMC) approach, and also compare some of its results with the equations developed. In practical applications, the closed-form formulae for A(t), A and MTTF are very useful in combination with other system equations in a reliability block diagram or fault-tree. On the other hand, the Erlang approximation is easy to use when one has Markov chain solvers (e.g., the SPNP or SHARPE modeling packages) available for computing dependability measures.","PeriodicalId":395613,"journal":{"name":"Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132535267","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: 34

Reliability stress test method: impact on the new product introduction process, time to market, field reliability impact and reliability assessment 可靠性应力测试方法:对新产品推出过程、上市时间、现场可靠性影响和可靠性评估的影响

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981663

S. Jawaid, J. Ferguson, S. Zaki

引用次数: 1

Integrated modelling of system functional, maintenance & environmental factors 系统功能、维护和环境因素的综合建模

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981674

J.A. Jones, L. Warrington, N. Davis

引用次数: 4

Application of Bayes statistics to reduce sample-size, considering a lifetime-ratio 应用贝叶斯统计减少样本大小，考虑寿命比

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981705

A. Krolo, B. Rzepka, B. Bertsche

引用次数: 8

Making the (business) case for software reliability 为软件可靠性制定(商业)案例

Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318) Pub Date : 2002-08-07 DOI: 10.1109/RAMS.2002.981656

T. Mcgibbon, D. Nicholls

引用次数: 3