【正文】 (i) Detection is an assessment of how well the product or process controls detect the cause of the failure or the failure mode. Detection is the rank associated with the best detection control listed in the Detection Controls column. Detection is a relative ranking within the scope of the individual FMEA. In order to achieve a lower ranking, generally the planned detection control has to be improved. 33 PFMEA 表 格 講 解 Detection (D) (i) Suggested Process FMEA Detection Evaluation Criteria Score1~2 Error (cause) P/D Score 3~4 Failure Mode D Score 5~6 Variable Gauging Score 6~7 Attribute Gauging Score 7~8 visual/tactile/audible means 34 PFMEA 表 格 講 解 Risk Evaluation。 Risk Priority Number (RPN)(j) One approach to assist in action prioritization has been to use the Risk Priority Number: RPN = Severity (S) x Occurrence (O) x Detection (D) Within the scope of the individual FMEA, this value can range between 1 and 1000. The use of an RPN threshold is NOT a remended practice for determining the need for actions. 35 PFMEA 表 格 講 解 Risk Evaluation。 Applying thresholds assumes that RPNs are a measure of relative risk (which they often are not) and that continuous improvement is not required (which it is). For example, if the customer applied an arbitrary threshold of 100 to the following, the supplier would be required to take action on the characteristic B with the RPN of 112. In this example, the RPN is higher for characteristic B than characteristic A. However, the priority should be to work on A with the higher severity of 9, although its RPN is 90 which is lower and below the threshold. 36 PFMEA 表 格 講 解 Remended Action(s) (k) In general, prevention actions (., reducing the occurrence) are preferable to detection actions. To Reduce Severity (S) Ranking: Only a design or process revision can bring about a reduction in the severity ranking. To Reduce Occurrence (O) Ranking: To reduce occurrence, process and design revisions may be required. A reduction in the occurrence ranking can be effected by removing or controlling one or more of the causes of the failure mode through a product or process design revision. To Reduce Detection (D) Ranking: The preferred method is the use of error/mistake proofing. A redesign of the detection methodology may result in a reduction of the detection ranking. 37 PFMEA 表 格 講 解 Responsibility Target Completion Date (l) Enter the name of the individual and anization responsible for pleting each remended action including the target pletion date. The processresponsible engineer/team leader is responsible for ensuring that all actions remended have been implemented or adequately addressed. 38 PFMEA 表 格 講 解 Action Results (mn) This section identifies the results of any pleted actions and their effect on S, O, D rankings and RPN. Action(s) Taken and Completion Date (m) After the action has been implemented, enter a brief description of the action taken and actual pletion date. Severity, Occurrence, Detection and RPN (n) After the preventive/corrective action has been pleted, determine and record the resulting severity, occurrence, and detection rankings. 39 PFMEA Link to Control Plan PFMEA Control Plan 40 PFMEA Real Case Analysis Interactive Section Let suppliers present the PFMEA for their typical product, introduce drawings and process flow diagram to all attendees, then we discuss the details of this PFMEA to find the incorrect points. 41 Management Philosophy The failure modes of FMEA: ? Team development work convert to one person work. ? FEAM is to achieve the customer or the third part satisfaction, instead of focusing on process improvement. ? FMEA has been introduced too late in process development or hasn’t followed PDCA circle to improve product/process. ? FMEA hasn’t been reviewed and updated in product life cycle, hasn’t processed as an dynamic tool. ? FMEA is considered too plex and needing too long time to prepare. 42 Reference： 〈POTENTIAL FAILURE MODE AND EFFECTS ANALYSIS (FMEA) 〉 Reference Manual Fourth Edition 〈ISO/TS16949 Five Core Tools Application Manual〉 Second Edition PFMEA Training 43 PFMEA Training Leo Yu Senior Supplier Develop Engineer AGCO (Changzhou) Agriculture Machinery Co., Ltd Mob: +86 15861866122 Address: , Changwu South Road, Wujin Hitech Industrial Zone, Changzhou, Jiangsu, China Contact： 44 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