Page 15 - Design for Six Sigma a Roadmap for Product Development

Preface

We are extremely pleased by the overwhelming reception of the first edi-
tion of this book by readers all over the world. In this second edition, we
have kept all the good materials of the first edition, and we added a sub-
stantial amount of new material based on the trend in the Lean Six
Sigma movement and many readers’ feedback. The following is a sum-
mary of what is added in the second edition.
The principles of lean operation are added and covered in great detail,
and we also describe how the lean operation principles can be inte-
grated with Six Sigma to form an effective Lean Six Sigma approach.
All these additions are in Chapter 2 of the second edition.
Design for Six Sigma (DFSS) is an effective approach to improve prod-
uct value and quality in the design stage. Complementary to DFSS,
lean product development is an emerging and effective system to improve
product development efficiency and effectiveness, and to decrease prod-
uct development lead time. This approach has been proved by many
good practices such as those of Toyota. We believe that DFSS and lean
product development should be carried out simultaneously in the prod-
uct development process. In the second edition, the principles and prac-
tices of lean product development are covered in detail, and these
materials can be found in Chapter 3.
In Design for Six Sigma practice, there are several alternative DFSS
project roadmaps that are widely applied, such as IDOV (identify, design,
optimize, verify), and DMADV (define, measure, analyze, design, verify).
We covered these DFSS roadmaps in the second edition. This material
is found in Chapter 5.
Axiomatic design is an important tool in DFSS. In the second edition
we added a new practical case study and more theorems and corol-
laries of the axiomatic design. This significant addition is seen in
Chapter 8.

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