Quality Function Deployment

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Quality Function Deployment

  1. 1. Edward C. Lai & Associates Introduction to Quality Function Deployment (QFD) © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 1
  2. 2. Edward C. Lai What is QFD? & Associates Quality Function Deployment (QFD) is a structured method for listening to the customers and optimizing designs, materials and processes to ensure the customers’ expectations are best satisfied. Optimal Thinking® is the core of all activities. © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 2
  3. 3. Edward C. Lai QFD Benefits & Associates • Shortest Cycle Time • Best Quality • Lowest Cost • Best Customer Satisfaction © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 3
  4. 4. Edward C. Lai QFD - History & Associates • 1966 - Yogi Akao proposes concept • 1969 - First magazine article • 1972 - Concept of deployment is developed • 1972 - KOBE Shipyard using Quality Tables • 1977 - Toyota uses QFD in their design process • 1984 - Dr. Clausing ( Xerox to Ford ) begins advocating QFD • 1987 - Bob King’s book “Better Designs in Half the Time” • 1988 - Clausing & Hauser QFD article published in Harvard Business Review © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 4
  5. 5. Edward C. Lai QFD Matrix Basics & Associates © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 5
  6. 6. Edward C. Lai QFD Matrix Basics & Associates © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 6
  7. 7. Edward C. Lai Sample Applications & Associates • Design of new or existing products • Design of new or existing services • Development of design requirements • Selection of decision alternatives • Selection of points of manufacturing • Selection of points of service • Selection of key suppliers • Trade studies © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 7
  8. 8. Edward C. Lai & Associates Product or Service Design QFD Application © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 8
  9. 9. Product or Service Design Edward C. Lai & Associates House of Quality INTERACTION MATRIX DESIGN REQUIREMENTS IMPORTANCE RATING TARGET VALUES REQUIREMENTS CUSTOMER RELATIONSHIP MATRIX TARGET VALUES WEIGHTED SCORES & KEY REQUIREMENTS © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 9
  10. 10. Edward C. Lai Waterfall Deployment & Associates REQUIREMENTS MATRIX Design Requirements DESIGN MATRIX Engineering Design PRODUCT CHARACTERISTICS Customer MATRIX Requirements Product Characteristics MANUFACTURING & PURCHASING Design MATRIX Requirements Manufacturing / Purchasing Operations PROCESS & Engineering PRODUCT CONTROL Design MATRIX Production / Quality Controls Product Characteristics Manufacturing / Purchasing Operations © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 10
  11. 11. Edward C. Lai & Associates Point of Manufacturing QFD Application © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 11
  12. 12. Edward C. Lai Product or Service Design QFD Process & Associates 7. 1. Identify customer requirements (WHATs) using affinity diagrams INTERACTION MATRIX 2. Determine customer importance rating for each of the requirements 4. DESIGN 3. Determine best value for each of the customer requirements REQUIREMENTS 4. Identify design requirements (HOWs) using affinity diagrams 1. 2. 6. 3. 5. Determine target value for each of the design requirements TARGET VALUES REQUIREMENTS IMPORTANCE 6. Determine how design requirements satisfy each of the customer CUSTOMER RATING requirements (9 = strong; 3 = medium; 1 = weak; RELATIONSHIP MATRIX blank = no relationship) 7. Determine correlation of design requirements to each other 8. Calculate weighted scores and determine optimal requirements 9. Perform sensitivity analysis of importance ratings and relationship 5. scores TARGET VALUES 8. WEIGHTED SCORES & KEY REQUIREMENTS © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 12
  13. 13. Point of Manufacturing Edward C. Lai & Associates House of Quality INTERACTION MATRIX POINTS OF MANUFACTURING ALTERNATIVES IMPORTANCE RATING DECISION CRITERIA TARGET VALUES RELATIONSHIP MATRIX WEIGHTED SCORES RANKING OF ALTERNATIVES © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 13
  14. 14. Point of Manufacturing (POM) Edward C. Lai & Associates QFD Process 6. 1. Identify decision criteria (WHATs) using affinity diagrams INTERACTION MATRIX 2. Determine importance rating for each of the decision criteria 4. POINT OF MFG 3. Determine best value for each of the decision criteria ALTERNATIVES 4. Identify POM alternatives (HOWs) using affinity diagrams 1. 2. 5. 3. 5. Determine how POM alternatives satisfy each of the decision DECISION CRITERIA TARGET VALUES criteria (9 = strong; 3 = medium; 1 = weak; IMPORTANCE RATING blank = no relationship) RELATIONSHIP MATRIX 6. Determine interaction of POM alternatives with each other 7. Calculate weighted scores for each of the POM alternatives 8. Calculate weighted scores and determine best POM alternative 9. Perform sensitivity analysis of importance ratings and relationship 7. WEIGHTED scores SCORES 8. ALTERNATIVE RANKING © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 14
  15. 15. Edward C. Lai & Associates Trade Study QFD Application © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 15
  16. 16. Trade Study Edward C. Lai & Associates House of Quality INTERACTION MATRIX SOLUTION ALTERNATIVES IMPORTANCE RATING DECISION CRITERIA TARGET VALUES RELATIONSHIP MATRIX WEIGHTED SCORES RANKING OF ALTERNATIVES © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 16
  17. 17. Edward C. Lai Trade Study QFD Process & Associates 6. 1. Identify customer requirements (WHAT's) using affinity diagrams INTERACTION MATRIX 2. Determine customer importance rating for each of the requirements 4. (Balanced among performance, life cycle cost and supportability) SOLUTION 3. Determine best value for each of the requirements ALTERNATIVES 4. Identify solution alternatives (HOW's) using affinity diagrams 1. 2. 5. 3. 5. Determine how solution alternatives satisfy each of the customer requirements based on technical data (9 = strong; TARGET VALUES REQUIREMENTS IMPORTANCE CUSTOMER 3 = medium; 1 = weak; blank = no relationship) RATING 6. Determine correlations of solution alternatives to each other RELATIONSHIP MATRIX 7. Calculate absolute and relative scores for each alternative 8. Analyze, rank and select best alternative 9. Perform sensitivity analysis of importance rating and relationship scores 7. WEIGHTED SCORES 8. KEY ALTERNATIVES © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 17
  18. 18. Edward C. Lai QFD Applications & Associates “ As with any versatile tool, the applications of QFD are limited only by one’s imagination. Lou Cohen - “Quality Function Deployment - How to Make QFD Work for You” © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 18
  19. 19. Edward C. Lai Summary & Associates • Structured QFD approach is key to success in meeting customer requirements • Team membership must include all stakeholders • Assures best understanding of customer requirements or decision criteria • Flexible, robust and proactive methodology helps in making optimal balanced decisions • Sensitivity analysis provides a means to explore different scenarios © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 19
  20. 20. Edward C. Lai & Associates For more information on QFD, please contact : Ed Lai 310-365-0629 elai001@aol.com © 2009, Edward C. Lai and Associates. OPTIMAL THINKING® is a registered trademark of The World Academy of Personal Development Inc. All Rights Reserved. Page 20

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