FMEA失效模式及其影响分析.pdf

FFFFaaililililureure MMMMoodddde ane andddd EffEffEffEffectect AAAAnanallllysysiiiiss 失失效效效效模模模模式式式式及及其其其其影影影影响响分分分分析析析析 1 Module ObjectivesModule Objectives课程目的课程目的 • Describe FMEA principles and techniques.  描述描述FMEAFMEA的法则及技巧的法则及技巧。。 • Summarize the concepts, definitions, applicationapplication optionsoptions andand relationshipsrelationships withwith other tools. • 摘要概念摘要概念、、定义定义、、应用的选择和其他工具的关联应用的选择和其他工具的关联。。 • Perform a FMEA • 执行执行一个个FMEAFMEA。 2 FMEAFMEA FMEA:FMEA: FailureFailure ModesModes andand EffectsEffects AnalysisAnalysis FMEA is a systematic approach used to examine potential failures and prevent their occurrence. It enhances our abilityy to ppredict pproblems and pprovides a syystem of ranking,g, or prioritization, so the most likely failure modes can be addressed. FMEA是用来检查潜在 失效和预防它再次发生的系统性方法.它增强了我们预测问题的能力,并提供了一个排序或区分 优先次序的系统,因而使得最可能的失效模式得以确定. FMEA is generally applied during the initial stages of a process or product design. Brainstormingg is used to determine ppotential failure modes,, their causes,, their severity,y, and their likelihood of occurring. In Six Sigma, we apply FMEA to know failure modes. Our main interests are the cause and likelihood of occurrence, for which we have actual data and do not need to rely on brainstorming. FMEA通常应用在工艺及产品设计的初期，自由讨论决定潜在失效的模式、原因、严重度及发 生的可能性。在6S中，我们应用FMEA去了解失效的模式。我们主要感兴趣的是原因及发生的 可能性。 FMEA is also a valuable tool for managing tasks during defect/failure reduction projects. FMEAFMEA也是也是一个在失效缩小的管理任务的有价值的工具个在失效缩小的管理任务的有价值的工具。。 3 Definition of FMEADefinition of FMEA 定义定义 FMEA is a systematic design evaluation procedure whosewhose purposepurpose isis to:to: 是系统的设计评估程序是系统的设计评估程序 1. recognize