Download - Design For Six Sigma (DFSS) - HKSQ
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Design For Six Sigma (DFSS) Introduction 24 January 2015
Peter K. Fung Chairman of Hong Kong Society for Quality
ASQ CQE, ASQ CSSBB
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Content
1. Design For Six Sigma
2. Application of Design For Six Sigma
3. Benefits of Design For Six Sigma
4. Philosophy, Methodology and Tools
5. Conclusion
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What is DFSS?
• DFSS is a new development from Six Sigma
• It is methodology to enhance new product and service development process
• It provides a more systematic way to manage the deliverable, resources and trade-offs
• It helps you to deliver better products and services that your customers want and willing to pay for (at Six Sigma Level)
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Developed by Motorola in the mid-1980s
Jack Welch of GE made it a strategic business management philosophy, saving billions of dollars
Spreading from manufacturing into servicing and other sectors
What is Six Sigma?
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Six Sigma DMAIC Roadmap
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Benefits of Six Sigma
Benefits: Delighting Customer
Solving Problem
Reducing Defect
Increasing Profit
And more…
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Problems encountered by Six Sigma
1. It does not address the customer values deep enough
2. DMAIC-based projects could not solve flawed design
3. Non-valued added processes cannot be removed
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DFSS Foundations
1. Customer-oriented design
2. Systematic and creative design
3. Robust performance and prevention philosophy
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Example: Six Sigma in Pizza Exprezz (1)
Problem: 1 out of 3 customers complained that the pizza is not hot enough
Reason: it could not be delivered in 30 min
Solution: shorted the lead time (DMAIC)
Defective Rate Performance Capability
1 out of 3 pizzas 2σ
7 out of 100 pizzas 3σ
6 out of 1,000 pizzas 4σ
2 out of 10,000 pizzas 5σ
3.4 out of 1,000,000 pizzas 6σ
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Motorola Six Sigma Level
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Example: Six Sigma in Pizza Exprezz (2)
Business is booming and 2 new pizza ovens were installed to meet the demand $$$.
Problem: customer complain that the pizza is half-baked
Reason: temperature of ovens, location of pizza inside the oven, content % ratio, time of baking, etc.
Solution: go back to everything before problem happen (by DMAIC)
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Example: Six Sigma in Pizza Exprezz (3)
Three years later, new population moves in this town, but new pizza houses open.
Problem: customers ask for varieties of pizza and much lower price
Solution: “Design It Right the First Time”
(by DMADV)
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Management of Six Sigma
New DESIGN
PROCESS MANAGEMENT
IMPROVEMENT
DMADV DMAIC
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When to use DFSS?
1. Replacing, rather than repairing
2. Improving an existing process will never meet the customers requirements
3. An opportunity to offer an entirely new product or service
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Why DFSS is slow to be taken up?
1. Number of Design < Number of Improvement
2. Risk and amount of resources to deign a new product is much higher than that to improve an existing product
3. Methods and tools are complicated, and knowledge requirement is high
4. Success of DFSS demand on mind-set and attitude (leadership and culture)
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Design For Six Sigma (DFSS)
DFSS is Free
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DFSS DMADV Roadmap
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Six Sigma Improvement (DMAIC) Design For Six Sigma (DMADV)
D define the problem
define the process
define customer requirement not met
D define customer needs
define “ALL” requirements and gain consensus on design generation
M measure extent of the problem
data from process, product and customers
M develop measure of success
establish tolerance
determine how crucial features be evaluated
A analyze the data and process to find the causes of problem
A create innovative concepts
narrow list of concept proposals
I improve by eliminating causes of problem
build safeguards
D detail the design alternatives list
select the best of the best
testing, testing and testing
C control by regular measure, checking
opportunities for future improvement
V validate by testing and deployment
establish the monitoring system
response planning
Roadmaps Six Sigma vs Design For SS
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DFSS Toolbox
1. Define - Voice Of Customers (VOC)
- Quality Function Deployment (QFD) - Kano Analysis
2. Measure - Benchmarking
- Capability Performance
3. Analyze - TRIZ
- Process Simulation
4. Design - Failure Mode and Effects Analysis (FMEA)
- Design Of Experiences (DOE) - Pugh Matrix
5. Verify - Statistics Process Control (SPC)
- Response Planning - Process Management
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Quality Function Deployment (QFD)
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Four Phases of QFD in manufacturing
3
4
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Two Phases of QFD in Service
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Correlation of Operation Items in QFD
When I make it stronger, it gets heavier. How can I solve this contradiction?
A B C D E F
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Summary (1)
Research Design Development Production
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Summary (2)
DFSS – DMDOV
Six Sigma - DMAIC
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Summary (3)
50%
100%
Design
Development
Testing and
Optimizing
Time Handover Design
Concept
Conventional Design
DFSS Design
Investment Cost Saving
Cost of Poor Design
Prevention Cost
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Summary (4)
Design For Six Sigma Business Benefits:
• Zero Defects Design
• Faster Launch of Products
• Lower Design Costs
• Lower Product Costs
• Increasing Profit
Big Picture of Design For Six Sigma:
• Organization and People innovation and competency to Market Challenges
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Conclusion
Philosophy: Cost of Poor Design
“DFSS is free. It is not a gift, but it is free.” Crosby Management and Consultant