TQM, VTU,Unit 6

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TQM, VTU,Unit 6

  1. 1. By Prof. Raghavendran VQUALITY FUNCTION DEPLOYMENT &FMEA
  2. 2. By Prof. Raghavendran VFAILURE MODE AND EFFECT ANALYSIS(FMEA)FMEA is also known as Failure mode, effect & critical analysis(FMECA).Failure mode & Effect analysis is a group of activities intended to “recognize & evaluate the potential failure of a product or process and its effect before the product/ service being produced & used, identify actions that could eliminate or reduce the chances of potential failures and lastly documenting the process. 2
  3. 3. By Prof. Raghavendran V FMEA is an analytical technique that combines the technology & Experience of the people in identifying foreseeable failures modes of a product or process and planning for its elimination. It is “Before-an-Event” action requiring a team effort to easily and Inexpensive effect changes in design and production. 3
  4. 4. By Prof. Raghavendran VFMEA is categorized in broadly 3 systems and they are:1. Failure mode analysis2. Failure effect analysis3. Failure criticality analysis 4
  5. 5. By Prof. Raghavendran VFAILURE MODE ANALYSISIt is analyzing the operations of the product or process to foresee, what are the most likely modes where the failure would occur. This would include the components involved, describing the components involved, the time, locations and many more. 5
  6. 6. By Prof. Raghavendran VFAILURE EFFECT ANALYSISIt is study of the potential failure to ascertain the likely impact on the performance of the whole product, the process or service and related elements. 6
  7. 7. By Prof. Raghavendran VFAILURE CRITICALITY ANALYSISIt is study of the criticality or intensity of potential failures of the product, process or service. The criticality may range from customer irritation to catastrophic occurrence. 7
  8. 8. By Prof. Raghavendran VFMEA DOCUMENTATION Block Diagram is very much needed to understand physical attributes of the product. The Documentation of FMEA consists:  FMEA number  Item  Design responsibility  Prepared by  Model number/year  Key date  FMEA Date  Core Team  Function 8
  9. 9. By Prof. Raghavendran VTYPES OF FMEA’SThey are:  Design FMEA,  Process FMEA,  Concept FMEA,  Maintenance FMEA,  System FMEA,  Environmental FMEA,  Service FMEA. 9
  10. 10. By Prof. Raghavendran VDESIGN FMEA FORM TEMPLATE 10
  11. 11. By Prof. Raghavendran V FMEA Analysis FMEA Number…………….. Page………….. Of …………. Item……………………………………….Design Responsibility…………………………….Prepared by……………………It Pote Poten S C Potenti O Curr D R Reco Respo Action Model Number/year…………………………..Key date……………………….FMEA Datee ntial tial la al (Orig)…………(Rev)………. ent P mme nsibili Resultsm Failu Effect Core s causes Desi N nded ty &/ re team:………………………………………………………………………………………………… s of s mecha gn Actio Target ………………………………… A S O DRF Mod failur nism Con ns compl ct E C E Pu e e of trols etion io V C T Nn failure dates nc Tti ao kn e n 11
  12. 12. By Prof. Raghavendran VBENEFITS OF FMEA Systematic review of component failures. Determining the effects that any failure will have on other items in the product or process and their functions. Determining those parts of the product or process whose failure will have critical effect or impact on product or process. Helping uncover oversights, misjudgments and errors that may have been made. Helping reduce development time and cost of manufacturing process. 12
  13. 13. By Prof. Raghavendran VQUALITY FUNCTIONAL DEPLOYMENTIt is invented by Dr. Mizuno, professor of Tokyo institute of technology. It is planning tool which can be applied to any organization to fulfill customer expectations.It focuses on customers expectations or need, often referred to as customer’s voice. It is team based tool in which customer needs are the driving force for the product development process. Conflicting needs are identified early in QFD Process and can be resolved before production. 13
  14. 14. QUALITY FUNCTION DEPLOYMENT A systematic method for transferring customer wants/needs/expectations into product and process characteristics
  15. 15. QUALITY FUNCTION DEPLOYMENT Quality Function Deployment  Voice of the customer  House of QualityQFD: An approach that integrates the “voice of the customer” into the product and service development process.
  16. 16. By Prof. Raghavendran VQUALITY FUNCTIONAL DEPLOYMENTQFD employed to translate customers expectations, in terms of specific requirements, into directions & actions, in terms of engineering or technical characteristics, that can be employed through:  Product Planning  Part Development  Process Planning  Production Planning  Services 16
  17. 17. By Prof. Raghavendran VQFD TEAM There are two types of teams 1. One is existing team with fewer members 2. Other team composed of marketing, design, quality, finance and product. 17
  18. 18. By Prof. Raghavendran VBENEFITS OF QFD Improves customer satisfaction  Focus on requirement  competitive information  prioritizes resources  Identifies items that can be acted upon Reduces implementation time  Decrease midstream design changes  Limits production problems  Avoid future redundancies  Identifies future application opportunities 18
  19. 19. By Prof. Raghavendran VBENEFITS OF QFD Promotes team work  Based on consensus  Creates communication at surfaces  Identifies actions at interfaces  Create global views of details Provides documentation  Documents rationale for design  Is easy to assimilate  Adapts to changes  Provides framework to sensitivity analysis 19
  20. 20. By Prof. Raghavendran VHOUSE OF QUALITYThe primary planning tool used in QFD is the House Of Quality.HoQ translates voice of customers into design requirements that meet specific targets.Managers and Engineers consider the house of quality to be primary chart in quality planning 20
  21. 21. By Prof. Raghavendran VHOUSE OF QUALITY’S PART DESCRIPTION:1) The exterior walls of the house are the customer requirements. On the left side is a listing of the voice of customer. On right side are prioritized customer requirements.2) The ceiling shows technical descriptors, consistency of the product is provided by engineering characteristics, design constraints and parameters. 21
  22. 22. By Prof. Raghavendran VHOUSE OF QUALITY’S PART DESCRIPTION:3) The interior walls are relationship between customer requirements and technical descriptors. Customers expectations (requirements) are translated into engineering characteristics (technical descriptors).4) The roof is the interrelationship between the technical descriptors.5) The foundation or base is known as prioritized technical descriptors. 22
  23. 23. HOUSE OF QUALITY Relationship B/W technical descriptors Technical customer Descriptors needs Prioritized Customer Needsrelationships between customer needs and engineering Prioritized Technical metrics descriptors
  24. 24. By Prof. Raghavendran VASSIGNMENT TIME: TO BE SUBMITTED BEFORE20TH OCT’ 2011.1. Explain in detail of QFD.2. Explain and construct House of quality. 24
  25. 25. By. Prof. Raghavendran VEND OF MODULE 6

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