【正文】 失效模式及影響分析 Failure Mode and Effects Analysis Thank You Any Question? 謝謝觀看 /歡迎下載 BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH 。 6．對(duì)設(shè)計(jì) FMEA，產(chǎn)品功能已確定，但投入生產(chǎn)前 。 Failure Mode 失效模式 在設(shè)計(jì)或過程中，不能滿足要求功能的都是失效模式 . Effect 影響 假設(shè)發(fā)生失效，描述對(duì)下到工序或終端客戶可能的影響 . Severity 嚴(yán)重程度 用一個(gè)量化的比例衡量影響的嚴(yán)重程度 . 10分 代表最壞的情況 , 1分代表極輕微 Causes 失效原因 列出導(dǎo)致產(chǎn)品失效的所有可能的原因 . Occurrence 發(fā)生頻率 用一個(gè)量化的比例衡量失效發(fā)生的頻率， 10 分代表一定會(huì)發(fā)生， 1 分代表 6 sigma 的水平，幾乎不發(fā)生或極少 . Current Controls 目前控制 列出目前用于預(yù)防失效的所有的控制方法 . Effectiveness 有效性 用一個(gè)量化的比例衡量目前所有的控制方法的有效程度 . 10 分代表控制方法無效，幾乎無法檢測(cè)到失效， 1 分代表檢測(cè)方法相當(dāng)有效 . 失效模式及影響分析 Failure Mode and Effects Analysis FMEA的組成部分 FMEA的工作流程圖 ① 缺陷的 名 稱 ⑥ 缺陷被發(fā)現(xiàn) 的概率 ⑦ 建議糾正 措 施 ② 潛在失效 的后果 ⑤ 缺陷產(chǎn)生的 頻 度 ④ 缺陷產(chǎn)生 的原因 ③ 失效嚴(yán)重度 程度 想象中可能產(chǎn)生的缺陷 失效模式及影響分析 Failure Mode and Effects Analysis ? 潛在的失效模式 (potential failure mode)： 失效是指產(chǎn)品無法執(zhí)行指定的功能 ? 可以用工序流程圖進(jìn)行分析， 本工序的失效模式可能是下一工序的原因 FAILURE MODE EFFECT 前一個(gè)操作 CAUSE 下一個(gè)操作 FMEA的失效模式之間關(guān)系 失效模式及影響分析 Failure Mode and Effects Analysis PRODUCT: ABC STXXXXX SUBSYSTEMS SPINDLE MOTOR DESIGN FMEA DRAWING OR SPEC REFERENCE: Oklahoma City PROCESS DESCRIPTION POTENTIAL POTENTIAL S POTENTIAL O CURRENT E RPN FAILURE MODE EFFECTS OF CAUSE(S) OF CONTROLS FUNCTION FAILURE FAILURE SPINDLE ROTATES MEDIA AT FIXED RPM NO SPIN, OR DRIVE RUNS IN REVERSE DRIVE INOPERABLE FAILURE OF FLEX SOLDER JOINT DUE TO INSUFFICIENT STRAIN RELIEF RESISTANCE MEASUREMENT AT INCOMING INSPECTION EFFECTIVENESS OCCURRENCE ABC SEVERITY 失效模式及影響分析 Failure Mode and Effects Analysis FMEA中的影響分析 PRODUCT: ABC STXXXXX SUBSYSTEMS SPINDLE MOTOR DESIGN FMEA DRAWING OR SPEC REFERENCE: Oklahoma City PROCESS DESCRIPTION POTENTIAL POTENTIAL S POTENTIAL O CURRENT E RPN FAILURE MODE EFFECTS OF CAUSE(S) OF CONTROLS FUNCTION FAILURE FAILURE SPINDLE ROTATES MEDIA AT FIXED RPM NO SPIN, OR DRIVE RUNS IN REVERSE DRIVE INOPERABLE FAILURE OF FLEX SOLDER JOINT DUE TO INSUFFICIENT STRAIN RELIEF RESISTANCE MEASUREMENT AT INCOMING INSPECTION EFFECTIVENESS OCCURRENCE SEVERITY Cause bees Failure Mode ABC 失效模式及影響分析 Failure Mode and Effects Analysis FMEA中的影響分析 PRODUCT: ABC STXXXXX SUBSYSTEMS SPINDLE MOTOR DESIGN FMEA DRAWING OR SPEC REFERENCE: Oklahoma City PROCESS DESCRIPTION POTENTIAL POTENTIAL S POTENTIAL O CURRENT E RPN FAILURE MODE EFFECTS OF CAUSE(S) OF CONTROLS FUNCTION FAILURE FAILURE SPINDLE ROTATES MEDIA AT FIXED RPM NO SPIN, OR DRIVE RUNS IN REVERSE DRIVE INOPERABLE FAILURE OF FLEX SOLDER JOINT DUE TO INSUFFICIENT STRAIN RELIEF RESISTANCE MEASUREMENT AT INCOMING INSPECTION EFFECTIVENESS OCCURRENCE SEVERITY Failure Mode bees Effect ABC 失效模式及影響分析 Failure Mode and Effects Analysis FMEA中的影響分析 PROVIDES A DEEPER LEVEL OF ANALYSIS BY ASKING YOU FOR THE DESIGN CAUSES AND VERIFICATION OF INSUFFICIENT STRAIN RELIEF PRODUCT: ABC STXXXXX SUBSYSTEMS SPINDLE MOTOR DESIGN FMEA DRAWING OR SPEC REFERENCE: Oklahoma City PROCESS DESCRIPTION POTENTIAL POTENTIAL S POTENTIAL O CURRENT E RPN FAILURE MODE EFFECTS OF CAUSE(S) OF CONTROLS FUNCTION FAILURE FAILURE SPINDLE ROTATES MEDIA AT FIXED RPM FAILURE OF FLEX SOLDER JOINT DUE TO INSUFFICIENT STRAIN RELIEF NO SPIN, OR DRIVE RUNS IN REVERSE CAUSING DRIVE TO BE INOPERABLE EFFECTIVENESS OCCURRENCE SEVERITY WHY? ABC 失效模式及影響分析 Failure Mode and Effects Analysis FMEA中的影響分析 PO W E RG A G ED E SI G NH A N D L I N GSE T U PC O N T A MI N A T I O NT O O L I N GO PE R A T O R E R R O R0 5 10 15 20 25 30 35 40 45 50過程失效原因的數(shù)目如下圖 (Pareto 圖 ) FMEA的失效模式的分析工具 失效模式及影響分析 Failure Mode and Effects Analysis 過程 FMEA 可以使用 Fishbone 進(jìn)