Quality Engineering

Quality Engineering: Off-Line Methods and Applications

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Features

  • Explains key methods for quality engineering, including DOE, Taguchi, RSI, and computational intelligence
  • Provides extensive examples and case studies
  • Keeps the material simple, avoiding extensive mathematical treatments
  • Outlines an integrated approach using neural networks and genetic algorithms to improve product quality and process performance
  • Focuses on the practical needs of engineers and engineering students

Summary

As quality becomes an increasingly essential factor for achieving business success, building quality improvement into all stages—product planning, product design, and process design—instead of just manufacturing has also become essential. Quality Engineering: Off-Line Methods and Applications explores how to use quality engineering methods and other modern techniques to ensure design optimization at every stage. The book takes a broad approach, focusing on the user’s perspective and building a well-structured framework for the study and implementation of quality engineering.

Starting with the basics, this book presents an overall picture of quality engineering. The author delineates quality engineering methods such as DOE, Taguchi, and RSM as well as computational intelligence approaches. He discusses how to use a general computational intelligence approach to improve product quality and process performance. He also provides extensive examples and case studies, numerous exercises, and a glossary of basic terms.

By adopting quality engineering, the defect rate during manufacturing shows noticeable improvement, the production cost is significantly lower, and the quality and reliability of products can be enhanced. Taking an integrated approach that makes the methods of upstream quality improvement accessible, without extensive mathematical treatments, this book is both a practical reference and an excellent textbook.

Table of Contents

Introduction
Quality
Robust Design
Quality Engineering
Structure of This Book
Exercises

Fundamentals of Experimental Design
Basic Principle
Factorial Experiments
Two-Level Full Factorial Design
Two-Level Fractional Factorial Design
Three-Level Factorial Design
Steps of a DOE Project
Exercises

Principles of Quality Engineering
Taguchi’s Perspectives
Noise Factors
Relationship between Quality Characteristics and Parameters
Classification of Parameters
Three Phases of Quality Engineering
Two-Step Optimization Procedure
Exercises

Utilization of Orthogonal Arrays
Introduction of Orthogonal Arrays
The Use of Orthogonal Arrays
Interaction
Linear Graphs
Orthogonal Arrays and Fractional Factorial Designs
Special Techniques for Modifying Orthogonal Arrays
Summary
Exercises

Quality Loss Function and Static Signal-to-Noise Ratios
The Concept of Quality Loss
Taguchi’s Quality Loss
The Types of Quality Loss Functions
The Signal-to-Noise Ratio
Signal-to-Noise Ratios for Static Problems
Exercises

Parameter Design for Static Characteristics
The Experiment Setup of Parameter Design
The Procedures of Static Parameter Design
Data Analysis of the Parameter Optimization Experiment
The Issue of Interactions
Examples of Parameter Design with Static Characteristics
Case Studies of Parameter Design with Static Characteristics
The Operating Window
Computer-Aided Parameter Design
Analysis of Discrete Data
Exercises

Parameter Design for Dynamic Characteristics
Introduction
Basic SN Ratios for Dynamic Problems
The Procedures of Dynamic Parameter Design
Examples of Parameter Design with Dynamic Characteristics
Case Studies of Parameter Design with Dynamic Characteristics
Other Types of Dynamic Problems
Exercises

Implementing Parameter Design
Analysis in the Planning Stage
Selection of Quality Characteristic
Selection of Noise and Control Factors
Differences between Taguchi Methods and the Classical Experimental Design
Exercises

Tolerance Design
The Concepts of Tolerance Design
The Procedures of Tolerance Design
Exercises

Mahalanobis-Taguchi System
Mahalanobis Distance
Feature Selection
Mahalanobis-Taguchi System
Case Study: RF Inspection Process
Case Study: Pressure Ulcers Development
Exercises

Response Surface Methodology

Introduction to Response Surface Methodology
Response Surfaces Designs
Fitting Models
Multi-Objective Optimization
Response Surface Approach for Process Robustness
Case Study: Improvement of the Fracture Resistance of Medium/Small-Sized TFT-LCD
Case Study: Optimization of the Performance of Inter-Metal Dielectric Process
Exercises

Parameter Design Using Computational Intelligence
Introduction
Neural Networks
Genetic Algorithms
Parameter Design Using Computational Intelligence
Case Studies
Exercises

Appendix
References
Glossary
Index

Author Bio(s)

Chao-Ton Su is a chair professor with the Department of Industrial Engineering and Engineering Management, National Tsing Hua University, Hsinchu, Taiwan.

Editorial Reviews

"This book provides a high quality reference for all engineers who wish to apply experimental design to actual product and process designs. It is well-organized and provides numerous practical examples and case studies that help the reader understand factorial experimental techniques, Taguchi Methods and other modern techniques more easily."
—Gregory H. Watson, Past-President of ASQ and Past-Chairman of IAQ Chairman, Business Excellence Solutions, Ltd.

"During my thirty years in the semiconductor industry I have witnessed quality engineering methods become widely applied to shorten R&D cycle time, optimize product/process parameters, and save cost. This book provides the complete structure of quality engineering with plenty of practical cases. It will help readers to learn these methods quickly and contribute to business success."
—Long-Chin Tu, Vice President, Taiwan Semiconductor Manufacturing Company

"Quality engineering methods are commonly used in industry to upgrade the quality level. This book is well written and is of great interest both to students and professionals wishing to develop or expand their knowledge of quality engineering. It contains clear presentation and practical implementation that are often missing from other texts."
—Fugee Tsung, Hong Kong University of Science and Technology

"Unimicron has learned how to use quality engineering approaches (both the DOE and Taguchi methods) that can reduce variation and enhance a product’s quality. This book aims to demonstrate the power of these approaches, and shows how these methods can be implemented in either a manufacturing or nonmanufacturing organization. The payback in customer satisfaction and growth will be dramatic when these approaches are carefully conducted."
—Tzyy-Jang Tseng, Chairman, Unimicron Technology Corporation

"Professor Su has extensive experience contending with problems regarding quality in the manufacturing and service industries and has made eminent contributions to the field of quality engineering. I believe that he is one of the best-qualified persons to author a book on quality engineering."
—Noriaki Kano, Tokyo University of Science

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