共查询到19条相似文献,搜索用时 234 毫秒
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在明确FMEA分析方法意义的基础上,本文对某装备进行故障模式及影响分析,并得出相应结论,以有助于该装备的研制与使用。 相似文献
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可靠性试验中环境应力与产品故障机理间关系研究 总被引:4,自引:0,他引:4
本文阐述了进行可靠性试验所用的环境应力种类,介绍了每种环境应力所会引起的故障模式,分析研究了每种环境应力可能导致的故障机理,并对实际试验中出现的典型故障模式进行了分析,最后对产品设计如何耐环境应力提出了建议。 相似文献
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针对目前电力作业无人机性能受到环境因素影响的评估普遍缺乏有效手段,提出一种基于参数修正FMEA(Potential Failure Mode and Effects Analysis)的无人机飞行环境适应性分析方法。首先分析电力作业环境下无人机飞行的环境影响因素,并确定环境因素指标,然后采用FMEA方法对各环境指标风险量化并进行参数修正,提出无人机飞行环境风险模型,确定无人机飞行的环境综合风险等级并量化,最后在实际场景对无人机飞行风险进行测试,根据所提出方法分析得到无人机飞行环境综合风险为7.775,属于较低风险,测试结果表明无人机在该环境下可安全飞行。该方法为无人机安全飞行评估提供了一定的依据。 相似文献
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可靠性工程技术中的众多工作项目需要建立在失效机理的基础上。了解和应用失效机理是改进产品可靠性的核心工作之一,在产品可靠性工程中被广泛应用。本文澄清了相关的基本概念,并且分析了失效机理在产品可靠性预计、寿命评估、故障模式及失效机理分析、可靠性试验以及失效分析方面的应用。 相似文献
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Implementation of failure modes and effects analysis in detergent production companies: A case study
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Failure mode and effect analysis (FMEA) is the most important method used by production companies to identify potential risks regarding occupational and health hazards and environmental hazards. This method is also useful in defining preventive actions to reduce the effects of these risks. Detergent production companies continually encounter many occupational and health hazards and environmental hazards, the management and reduction of which requires complex assessment in real‐world applications. This paper presents a framework for application of FMEA for managing and ranking identified risks in detergent production companies. A case study is presented to show the application of an FMEA to investigate the results of its application and the outcomes from the analysis. A risk priority number (RPN) is proposed for each distinct risk. The application of FMEA in the detergent production company resulted in grouping the RPN of the identified risks into four different categories. The main corrective actions, which are determined to reduce the RPNs, are presented in this paper. Improving the RPN of the main risks is observed after executing the corrective actions. 相似文献
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Peggy A. Johnson Eric R. Brown 《Journal of the American Water Resources Association》2001,37(5):1225-1236
ABSTRACT: The designs of stream channel naturalization, rehabilitation, and restoration projects are inherently fraught with uncertainty. Although a systematic approach to design can be described, the likelihood of success or failure of the design is unknown due to uncertainties within the design and implementation process. In this paper, a method for incorporating uncertainty in decision‐making during the design phase is presented that uses a decision analysis method known as Failure Modes and Effects Analysis (FMEA). The approach is applied to a channel rehabilitation project in north‐central Pennsylvania. FMEA considers risk in terms of the likelihood of a component failure, the consequences of failure, and the level of difficulty required to detect failure. Ratings developed as part of the FMEA can provide justification for decision making in determining design components that require particular attention to prevent failure of the project and the appropriate compensating actions to be taken. 相似文献
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本文介绍了基于任务成功率的装备综合保障工作体系框架,提出了可靠性、维修性、测试性、保障性、安全性协同设计环境要求,从而为进行可靠性、维修性、测试性、保障性、安全性综合优化设计奠定基础。 相似文献
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Amanda J. Hess Peggy A. Johnson 《Journal of the American Water Resources Association》2001,37(1):213-221
ABSTRACT: The environment surrounding urban streams imposes constraints upon stream enhancement projects. Constraints include bridges, culverts, highways, sewer and water lines, lack of easements, and other floodplain structures. The consequences of failure of these infrastructure constraints can be significant and should be considered in the design process. Fault tree analysis provides a systematic technique for analyzing the interactions of events that could lead to infrastructure failure. A case study of a stream in Pittsburgh, Pennsylvania, shows that fault tree analysis can effectively model the interactions between the stream system and the infrastructure constraints and predict the most likely modes of failure. In addition, the relative success of alternative designs and failure mitigation techniques can be assessed using this analysis tool, lending insight into the urban stream enhancement design process. The method could also provide justification in the design permitting process and input for risk assessment. 相似文献
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本文主要简述了某军用装备型号设备在可靠性、保障性、维修性设计中注意的几个重要方面,并对设计工作中具体的可靠性要求展开了讨论。 相似文献
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本文主要介绍和分析了某雷达操控台环境工程设计及可靠性技术,根据该雷达的特点及各组成设备,对操控台进行了热环境设计、可靠性、维修性设计、人机工程及电磁兼容设计等,设计分析表明,该雷达操控台能够满足雷达使用要求. 相似文献
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本文首先对大型复杂电子系统的特点及"五性"一体化设计的思想进行了阐述,进而结合工程实际,分析了当前"五性"设计存在的问题,提出开展"五性"一体化设计是解决上述问题的根本出路,并提出了相应建议措施,对如何建立"五性"指标体系、综合设计模型、"五性"一体化信息平台进行了一定的阐述。 相似文献
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水质报表是水环境监测领域内系统的重要组成部分,为加快水质报表的开发,增强水质报表的可维护性,设计独立于系统并且符合水质报表特性的报表工具。该报表工具分为报表设计器和报表服务器两部分,设计器提供可视化的报表编辑界面,允许用户自己设计报表函数,服务器负责报表的调用和解析并且采用缓存机制提高报表的运行效率,将该报表工具应用于水质环境监测及分析系统以验证其实用性,结果证明,该水质报表工具具有较高的灵活性和可扩展性。 相似文献
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测试性是产品的一种设计特性,是伴随功能原理设计时赋予产品的一种固有属性。随着电子产品及设备的复杂和多样化,导致其故障诊断越来越困难,产品的测试性也逐渐得到生产和使用单位的重视。为尽早在研制阶段对产品的测试性水平进行评估,发现测试性设计的薄弱环节,首先对测试性仿真技术进行了简单介绍,之后详细阐述了基于TEAMS的测试性仿真方法,最后以某型柴油机系统为例,对其测试性指标进行预计,同时发现产品测试性设计上的薄弱环节,为产品的设计改进提供建议。 相似文献