Annual Reliability and Maintainability Symposium 1995 Proceedings最新文献_第3页

An efficient decomposition technique for Markov-chain analysis 马尔可夫链分析中一种有效的分解技术

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513286

Arun Kumar Somani, U. R. Sandadi, D. Twigg, T. Sharma

引用次数: 0

An inspection model for automatic trips and warning instruments 一种自动跳闸和报警仪表的检测模型

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513257

D. Sherwin

引用次数: 3

Dependency modeling of an avionics power-supply for testability analysis 基于可测试性分析的航空电子电源依赖关系建模

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513259

M. A. Hinzmann

引用次数: 1

Mass-transit system service quality: tradeoff analysis on reliability, maintainability and logistics 轨道交通系统服务质量:可靠性、可维护性和物流的权衡分析

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513293

P. Dersin, J. Durand

{"title":"Mass-transit system service quality: tradeoff analysis on reliability, maintainability and logistics","authors":"P. Dersin, J. Durand","doi":"10.1109/RAMS.1995.513293","DOIUrl":"https://doi.org/10.1109/RAMS.1995.513293","url":null,"abstract":"Service quality is influenced not only by intrinsic reliability and maintainability but also by logistical factors such as: the number of operations reserves of spare trains; the number of repair facilities; fleet size; average recovery times after perturbations; and spare parts. Operators are looking for service quality commitments from manufacturers. However, only intrinsic reliability and maintainability, and to some extent, service reliability, are determined by the manufacturer's design. This paper addresses quantitatively the dependence of service quality on intrinsic reliability and maintainability, and logistic variables. Analytical models, based on Markov chains, are used to derive the corresponding relationships. Sensitivity analyses can then be performed. Tradeoffs can be assessed quantitatively between several solutions for achieving a given service quality target at different costs. On the basis of such a tradeoff analysis. The effort toward a higher service quality can be guided in a life-cycle cost perspective. Also, reliability and maintainability apportionments can be performed which are derived from the service quality objective. Logistic parameters are seen to play a key part. Accordingly, the manufacturer which does not control maintenance may find it inappropriate to commit to a service quality level, but may commit, instead, to reliability and maintainability levels that, under precise assumptions on the logistics, result in the desired service quality.","PeriodicalId":143102,"journal":{"name":"Annual Reliability and Maintainability Symposium 1995 Proceedings","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115462423","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

A customer-oriented approach to optimizing reliability-allocation within a set of weapon-system requirements 一种在一套武器系统要求中优化可靠性分配的面向客户的方法

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513229

J.J. Hadel, P. Lakey

引用次数: 6

Consideration of component failure mechanisms in the reliability assessment of electronic equipment-addressing the constant failure rate assumption 电子设备可靠性评估中元件失效机制的考虑——解决恒定故障率假设

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513224

D. Mortin, J. Krolewski, M. Cushing

引用次数: 13

Exploratory research on nonthermal damage to electronics from fires and fire-suppression agents 火灾及灭火剂对电子设备非热损伤的探索性研究

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513215

F. Mowrer, M. Pecht

{"title":"Exploratory research on nonthermal damage to electronics from fires and fire-suppression agents","authors":"F. Mowrer, M. Pecht","doi":"10.1109/RAMS.1995.513215","DOIUrl":"https://doi.org/10.1109/RAMS.1995.513215","url":null,"abstract":"Electronic equipment is expected to operate reliably under normal conditions as well as under foreseeable abnormal conditions, particularly in life-critical and environmentally sensitive applications. One foreseeable abnormal condition to which electronic equipment may be subjected at least once during its life-cycle is a fire environment. Such an environment may include the thermal and corrosive effects in the immediate vicinity of the fire and the nonthermal effects associated with smoke contamination, humidity and corrosion in remote locations. Direct thermal effects are generally so severe that reasonable remedial actions may not be feasible. Fortunately, such effects are frequently restricted to a fairly small zone, often through the use of automatic fire detection and suppression systems. On the other hand, the thermal decomposition products of smoke and fire suppression agents resulting from even a small fire may permeate a building and cause nonthermal damage to electronic equipment in locations remote from the actual fire. With ever-increasing reliance being placed on electronic equipment in all types of applications and the consequent increase in value concentrations, nonthermal damage from fires and fire suppression agents is a topic of growing interest. The purpose of this exploratory research is to characterize nonthermal damage mechanisms, consequences, and potential preventive and remedial actions using a physics-of-failure approach.","PeriodicalId":143102,"journal":{"name":"Annual Reliability and Maintainability Symposium 1995 Proceedings","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128358025","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

Environmental stress screening strategies for multi-component systems with Weibull failure-times and imperfect failure detection 具有威布尔失效时间和不完全失效检测的多部件系统环境应力筛选策略

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513250

E. Pohl, D. Dietrich

{"title":"Environmental stress screening strategies for multi-component systems with Weibull failure-times and imperfect failure detection","authors":"E. Pohl, D. Dietrich","doi":"10.1109/RAMS.1995.513250","DOIUrl":"https://doi.org/10.1109/RAMS.1995.513250","url":null,"abstract":"Environmental stress screening (ESS) is employed to reduce, if not eliminate, the occurrence of early field failures. In this paper, a general two-level ESS model is presented for a multi-component electronic system. Screening is performed at the component and unit level. Components and connections are assumed to come from good and substandard populations and their time-to-failure distributions are modeled with mixture distributions. ESS models currently found in the literature assume that time-to-failure distributions are mixtures of exponentials. This paper extends previous work by examining mixtures of Weibull distributions for all assembly levels. The mixed Weibull distribution is used to examine how screening strategies change when wear-out mechanisms are present, Also, this paper relaxes the assumption that all failures precipitated by the screening process are found before being used in subsequent assembly levels. Numerical examples are provided to illustrate the screening model. Significant changes in screening strategies are found when the assumptions of perfect failure detection and exponentiality are relaxed.","PeriodicalId":143102,"journal":{"name":"Annual Reliability and Maintainability Symposium 1995 Proceedings","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126970882","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: 9

Avoiding safety-management errors in the next generation 避免下一代出现安全管理错误

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513290

M. W. Hulet, C. W. Carroll

引用次数: 1

Rationalizing scheduled-maintenance requirements using reliability centered maintenance-a Canadian Air Force perspective 使用以可靠性为中心的维护使计划维护需求合理化——加拿大空军的观点

Annual Reliability and Maintainability Symposium 1995 Proceedings Pub Date : 1995-01-16 DOI: 10.1109/RAMS.1995.513217

L.J. Hollick, G. Nelson

{"title":"Rationalizing scheduled-maintenance requirements using reliability centered maintenance-a Canadian Air Force perspective","authors":"L.J. Hollick, G. Nelson","doi":"10.1109/RAMS.1995.513217","DOIUrl":"https://doi.org/10.1109/RAMS.1995.513217","url":null,"abstract":"Failure modes and effects analysis (FMEA) and reliability centered maintenance (RCM)/maintenance steering group (MSG) decision logic have been successfully used by military and commercial aviation manufacturers for over three decades to develop preventive maintenance programs for new aircraft fleets. However, once a fleet is in place, there is a requirement to periodically validate or rationalize the applicability and effectiveness of individual tasks in the program, and to adjust task frequencies. Experience has shown that it is inefficient to re-apply FMEA/RCM decision logic to every aircraft item on a fixed frequency basis. This paper identifies how the Canadian Air Force (CAF) proposes to make more efficient and effective use of the in-service data it collects to identify those items for which the preventive maintenance requirement is ineffective or inapplicable. Moreover, it discusses how the same data source can be used in follow-up investigation to determine the actual failure mode history of an item as a basis for comparison with the FMEA-the basis upon which the requirement for the existing tasks is developed.","PeriodicalId":143102,"journal":{"name":"Annual Reliability and Maintainability Symposium 1995 Proceedings","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127832900","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: 15