【正文】 ps CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 60Occurrence (DFMEA)RatingDescription Probability of failureDesign life failure rate1 Remote Failure unlikely 1 ppm3 Low Relatively low failure rate 200 ppm 1000 ppm5 Moderate Occasional failures 2500 ppm 1 in 80 (%)7 High Repeated failures 1 in 40 (%0 1 in 20 (%)10 Very high Failure almost inevitable 1 in 8 (%) 1 in 2 (%)HPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 61DetectionApproach Description ApplicationTimetable How early in product life cycle DFMEAfrom design start to Field failure ?Fixedgate What’s the probability of detection DFMEAat any point (gate) in the cycle ?HPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 62Detection (DFMEA)Timetable approachRating Probability of detection1 Will be detected prior to Production Release3 Very likely to be detected prior to Final Release4 Detectable after release but before Mass Production5 Detectable prior to Shipment7 Will be detected before occurrence in the field10 Undetectable until failure occurs in the fieldHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 63Detection (DFMEA)Fixed Gate approachRating Probability of detection1 Will be detected in design evaluations3 High chance of detection in design evaluations5 Moderate chance of detection in design evaluations7 Low chance of detection during design evaluations 10 Undetectable until failure occurs in the fieldHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 644ORGANIZATIONAL ASPECTS OFFMEAHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 65Organisational Aspects of FMEA? General Points? Participants? Preparations? ReportingHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 66? FMEA is a team effort covering all relevant disciplines? FMEA sessions should not last longer than half a day? The product FMEA should be focused on: reliability (normal functioning) producibility? The process FMEA should be focused on: process flow manipulations of operator deviations in material transport storage General PointsHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 67FMEA : Critical Success Factors* Be honest* Be positive* Be thorough* Attention to details* Follow through* Involve the right people* “Rather be safe than sorry”* Management by factMinimise guesswork and gutfeelMaximise use of data and quantitative methodsHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 68Participants? Participants should be directly involved? Number of participants should be limited? Participants from relevant departments: Development Engineering Production Process Quality Specialist (if necessary) ServiceHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 69Preparations for DFMEA? Preparations should be done by the designer, in close cooperation with the chairman of the meeting? Drawings and sufficient models should be available? One model should have been in circulation? Tolerance calculations and contour maps should be available? Special preparations for a DFMEA: the design should be breakdown into ‘elements’ priority settings of these elements from existing products the following data should be available:. Presale data. Service call rate figures. Fall off figuresHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 70Reporting? Result of FMEA reported on standard forms? Action list should be set up from the session and should be: presented on the milestone meetings known and tracked within the project team discussed at every project team meetingHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 715MATURITY GRIDHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 72Use of the Maturity GridObjective:? To track maturity in design of product process? To facilitate Milestone decisions? To visualise status: also problems to be solved in the next phasesInputs for Maturity Grid:? Outstanding Design Issues (Tech Spec, Customer Requirements)? Problems found in Design Evaluation / Process Trails? Problems found in Reliability tests? Potential problems identified in FMEA sessionsFMEA provides input to the maturity grid, but is not the only one!HPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 73Maturity Grid for Products ProcessesGravity Factor:S non conformity with safety standard /other requirementA product not producible or saleableB not accepted by critical customer or production with big problemsC can be sold or produced with minor difficultiesD problem accepted (no actions)Evolution Factor:4 cause not known3 solution not known2 evaluation not yet positive1 solution not yet introduced0 solutions introducedProduct/Process maturity gridGravity FactorEvolution FactorS A B C D43210AFM CD DRCRIRPotential problems in designHPhilips CFT Asia PacificInnovation Industrial SupportCZB698000006| 16 三月 2023 | 74No Evaluated?Evaluation positive?Cause known?Solution known?Solution introduced?NoYesYesYesYesNoNoNo43210Establish Followup with evolution of ActionsGravity Factor:S non conformity with safety standard /other requirementA product not producible or saleableB not accepted by c