Page 21 - Design for Six Sigma a Roadmap for Product Development

Preface to the First Edition xix

Chapter 15 discusses some recent developments in Taguchi methods,
such as ideal functions, dynamic signal-to-noise ratio, functional quality,
and robust technology development.
Chapter 16 is a very comprehensive chapter on tolerance design or
specification design. It gives all important working details on all major
tolerance design methods, such as worst case tolerance design, statisti-
cal tolerance design, cost based optimal tolerance design, and Taguchi tol-
erance design. Many examples are included.
Chapter 17 discusses the response surface method (RSM), which can
be used as a very useful method to develop transfer functions and con-
duct transfer function optimization. We provide fairly complete and
comprehensive coverage on RSM.
Chapter 18 is a chapter discussing design validation.We introduce the
process of three important validation activities: design validation, process
validation, and production validation. In design validation, we discuss in
detail the roles of design analysis, such as computer simulation and
design review, validation testing in design validation, the guideline to
plan design validation activities, and the roles of prototypes in valida-
tion.We also discuss many important aspects of process validation, such
as process capability validation.
This book’s main distinguishing feature is its completeness and
comprehensiveness. All important topics in DFSS are discussed
clearly and in depth. The organizational, implementation, theoreti-
cal, and practical aspects of both DFSS process and DFSS methods
are all covered very carefully in complete detail. Many of the books
in this area usually only give superficial description of DFSS with-
out any details. This is the only book so far to discuss all important
DFSS methods, such as transfer functions, axiomatic design, TRIZ,
and Taguchi methods in great detail. This book can be used ideally
either as a complete reference book on DFSS or a complete training
guide for DFSS teams.
In preparing this book we received advice and encouragement from
several people. For this we express our thanks to Dr. G. Taguchi, Dr.
Nam P. Suh, Dr. K. Murty, Mr. Shin Taguchi, and Dr. O. Mejabi. We are
appreciative of the help of many individuals.We are very thankful for the
efforts of Kenneth McCombs, Michelle Brandel, David Fogarty, and
Pamela A. Pelton at McGraw-Hill. We want to acknowledge and express
our gratitude to Dave Roy, Master Black Belt of Textron, Inc. for his con-
tribution to Chapters 7 and 11. We want to acknowledge Mr. Hongwei
Zhang for his contribution to Chapter 9.We are very thankful to Invention
Machine Inc. and Mr. Josh Veshia, for their permission to use many excel-
lent graphs of TRIZ examples in Chapter 9. We want to acknowledge
Miss T. M. Kendall for her editorial support of our draft. We want
to acknowledge the departmental secretary of the Industrial and