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A New Theme for Design of Experiments or How to Un-Geek the DOE Process

A New Theme for Design of Experiments or How to Un-Geek the DOE Process. Bill Hooper Sr. Statistical Engineer Elkay Manufacturing ASQ – CQE, CRE, CSSBB, CMQ/OE. May 24, 2010. Overview of Presentation. The status-quo of a DOE Five steps to changing the status-quo for the DOE process

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A New Theme for Design of Experiments or How to Un-Geek the DOE Process

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  1. A New Theme for Design of Experiments or How to Un-Geek the DOE Process Bill Hooper Sr. Statistical Engineer Elkay Manufacturing ASQ – CQE, CRE, CSSBB, CMQ/OE May 24, 2010

  2. Overview of Presentation • The status-quo of a DOE • Five steps to changing the status-quo for the DOE process • An example DOE with attribute and ordinal data

  3. So what is the status quo? Computer generated designs Low operator involvement/commitment Statistics! Statistics! Statistics! 4-6 months to get results 30 days for the rebound

  4. So what is not the status quo?

  5. #1 – Shut the computer off and design freehand

  6. Fraction Factorial Design • Factors: 8 Resolution: IV • Runs: 67 Replicates: 2 Fraction: 1/8 • Blocks: 2 Center pts 3 • Design Generators: F = ABC, G = ABD, H = BCDE

  7. Available Factor Designs and their Resolution III Do only if necessary Memorize!!

  8. #2: Understand Statistics without talking statistics What is an Alpha error? What is a Beta error?

  9. What the jury found guilty Not guilty He did it What really happened He did not do it

  10. #3 Eliminate the killer Alpha errors! So what is an example of an alpha error?

  11. #4 - Speed does matter (2-4 days tops)

  12. Typical fast results

  13. #5 – make it visual

  14. The defects Bowl Break Bowl wrinkle

  15. Ordinal/Attribute Data Run Analysis Breaks Bowl Wrinkle Deck Wrinkles Possible sweet spot

  16. Follow-up Runs – making it work Additional runs to define sweet spot

  17. …and it does work

  18. Un-geeking the DOE process • Shut the computer off • Understand statistics without talking statistics • Stop the Nelson Mandela errors • Speed • Make it obvious – use graphics

  19. …..the simplest DOE

  20. Bill HooperElkay Manufacturing Company

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