failuremodeandeffectsanalysis失效模式和影響分析(編輯修改稿)
2025-07-26 08:22 本頁面
【文章內(nèi)容簡介】 w subassemblies and possible assembly procedure 部件概況以及可能的裝配程序。l Preliminary Test Plan or Test Plan from predecessor product 初步測試計劃或前一期產(chǎn)品的測試計劃l Functional prototype / already existing single parts 功能樣板或現(xiàn)成的零件。l Similar product(s) including list of errors / weak points 類似產(chǎn)品（附帶缺陷或瑕疵的清單） for Process FMEA 過程FMEA的輸入 Required: 要求：l Preliminary production layout and manufacturing plan 初步的設(shè)計布局和生產(chǎn)計劃。l Assembly drawing including position numbers, individual part drawings (if available) and BOM 標注位置序號的安裝圖紙，單個的零件的圖紙（如果可以）和物料清單。l (Demounted) prototype （卸除的）樣品l Drawing of part/ponent (inhouse manufactured part/ponent) 零件或元件（自己生產(chǎn)的零件或元件）的圖紙l List of failures / problems in manufacturing of the predecessor product 制造前期產(chǎn)品失效或問題的清單l Control Plan of predecessor product (if existent) 前期產(chǎn)品的控制計劃(如果存在)l Updated Product FMEA 更新的產(chǎn)品FMEA Execution of an FMEA 一個FMEA的執(zhí)行 Step1: Structural analysis 第一步：結(jié)構(gòu)分析l Listing and structuring of all elements involved. Creating a tree structure. 列出并組織所有相關(guān)元素，建立一個樹狀結(jié)構(gòu)。 Step2: Functional analysis 第二步：功能分析l Listing of all functions and characteristics of the elements. The total life cycle of the product has to be analyzed. 列出這些元素所有的功能和特性。分析產(chǎn)品整個生命周期。l Functions include internal and external requirements and expectations. They must be described with a noun and a verb. 功能包含內(nèi)部和外部共同的要求和期望。用一個名詞和一個動詞來描述這些功能。l Characteristics are requirements that are specified with measurable variables as much as possible. 特性是由盡可能多的可測量變量規(guī)定的要求。l The more accurate the description of the functions and characteristics is, the more accurately the potential malfunctions can be derived. 對功能和特性的描述越準確，就越能準確地推導(dǎo)出可能存在的失效 Step3: Failure analysis 第三步 失效分析l Analysis of potential malfunctions and functional deficits or potential process failures 分析可能存在的故障以及功能障礙或可能存在的過程失效 Step4+ 5: Analysis of risks and optimization 第四步和第五步：風(fēng)險分析和優(yōu)化l Risk assessment for the current status, without additional measures。 不采取附加措施，對現(xiàn)狀進行的風(fēng)險評估。l Documentation of corrective measure(s) 對糾正措施進行記錄l Risk assessment for the optimized status 對優(yōu)化后狀況進行風(fēng)險評估 Documentation Job done marks: 工作完成標志：l A job done mark can be used by the MOD to sign in the FMEA file that an item was discussed in the FMEA meeting. 當一個項目在FMEA會議討論之后，F(xiàn)MEA主持人可用工作完成標志FMEA文件中標注l The failure analysis, the analysis of risks and the optimization are done in the FMEA meeting by the interdisciplinary FMEA team. If the FMEA team identifies a risk, a discussion starts whether the risk is acceptable or not. 跨學(xué)科FMEA團隊在FMEA會議上進行失效分析，風(fēng)險分析，以及優(yōu)化。一旦FMEA團隊識別出一項風(fēng)險，將對該風(fēng)險能否接受進行討論。a) Acceptable risk (always low RPN) 可接受風(fēng)險（總是低風(fēng)險順序數(shù)）To document the result of the discussion of all acceptable risks the function can be marked by a job done mark. That means the FMEA team discussed the item in a sufficient way and identified no need for additional actions. The remaining risk is accepted. 為了記錄討論所有可接受風(fēng)險的結(jié)果，可用工作完成標志來對該功能進行標注。也就是說FMEA團隊已經(jīng)對該項目進行充分討論并認定不需要采取附加措施，當前的風(fēng)險是可接受的b) Not acceptable risk 不
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