Dfss

Recent Innovations in Design for Six
Sigma (DFSS) Testing: Approaches to
Speed Technology to the Marketplace

Dr. Mark J. Kiemele
Air Academy Associates

Air
Academy
Associates
Copyright
2005

21st Annual National Test & Evaluation Forum
National Defense Industrial Association
Charlotte, NC
March 10, 2005

Agenda

• Brief Overview of Design for Six Sigma (DFSS)
• Factorial Testing and Sequencing of the Tests
• High Throughput Testing
• Multidiscipline Design Optimization with
Latin Hypercube Sampling

Air
Academy
Associates
Copyright
2005

1

Six Sigma Defined
Originally: Metric Based on the Statistical Measure Called
Standard Deviation
Expanded To:
WORLD CLASS QUALITY
Providing a
BETTER product or service,

Low
Spec

High
Spec

FASTER, and at a LOWER COST than our competition.
VARIATION is the enemy!
Air
Academy
Associates
Copyright
2005

"Always know the language of the enemy."
2

Graphical Meaning of a Distribution

y (measure of performance)

130

140

150

160

170

Air
Academy
Associates
Copyright
2005

3

Graphical Meaning of y

y (measure of performance)

130

140

160

150 y 170

153

Air
Academy
Associates
Copyright
2005

4

Graphical Meaning of Points of Inflection

Point of Inflection

Point of Inflection

y (measure of performance)

130

140

160

150 y 170

153

Air
Academy
Associates
Copyright
2005

5

Graphical Meaning of
= distance from the center of the distribution to a point of inflection

Point of Inflection

For this example,
7 = 160 - 153

y (measure of performance)

130

140

160

150 y 170

153

Air
Academy
Associates
Copyright
2005

6

Graphical View of Variation and
Six Sigma Performance
The Sigma Capability of a process performance measure compares the Voice of the
Process with the Voice of the Customer, and it is defined as follows:
The number of Sigmas