Engineering Robust Designs with Six SIGMA

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März 2005



""Dr. Wang's work is of the highest caliber. He has the ability to take very complex subjects and to present them very clearly. He makes excellent use of examples throughout the book.""
--Donald W. Sova, Ph.D., Booz Allen Hamilton""I have not seen a text that provides such broad coverage of the topic. The foremost feature of this is competitive advantage. This product should provide superior utility at a lower cost to both the consumer and to the producer. Competitive advantage is rapidly becoming a necessity to stay in the game.""
--Jeffrey B. Lynch, Northrop Grumman Corporation""Few, if any, other people have the experience in both quality engineering (Six Sigma) and in product engineering that could match Dr. Wang's. A great deal of the unique value of this book is the integration of ideas from these two disciplines.""
--Marvin L. Roush, Professor Emeritus, University of Maryland at College ParkLeverage Six Sigma to Transform Product Design and DevelopmentToday's customers demand unprecedented reliability, efficiency, flexibility, and affordability. To deliver products, this robust, quality manufacturing isn't enough; Six Sigma processes must begin in the earliest stages of design. Now, one of the field's leading experts offers the first complete blueprint for implementing Six Sigma product design. John X. Wang has transformed product design at companies ranging from Maytag and Visteon to General Electric. In this book, he illuminates the full spectrum of proven techniques, from Voice-of-Customer (VOC) and Critical-to-Quality (CTQ) to Kano modeling. You'll discover how Six Sigma can bridge critical gaps between research and development, product and process, andhow it can help you quickly respond to any change, from new suppliers to emerging customer requirements. Topics covered includeStarting out: identifying projects, organizing teams, developing VOC models, formulating CTQ characteristicsCreating robust design concepts: principles


Preface xiii About the Author xviiChapter 1. Achieving Robust Designs with Six Sigma: Dependable, Reliable, and Affordable 11.1 Six Sigma and Robust Design 1 1.2 Identify Project and Organize Team 3 1.3 Develop VOC Models 4 1.4 Formulate Critical-to-Quality Characteristics 6 1.5 Control Energy Transformation for Each CTQ Characteristic 8 1.6 Determine Control and Noise Factors 12 1.7 Assign Control Factors to the Inner Array 15 1.8 Summary and Road Map 20 Bibliography 23 Chapter 2. The Kano Model: Listening to the Voice-of-Customers 252.1 How to Make the Customer Happy 26 2.2 Customer Requirements Over Time 32 2.3 Control Factor Levels: Ensure Three Types of Quality 34 2.4 Noise-by-Control Analysis: Making Products More Robust 38 2.5 Variability Reduction 40 2.6 The Outer Array: An Orthogonal Array Specifying Multiple Noises 43 2.7 Selecting Noise Levels 45 2.8 Summary 47 Bibliography 48 Chapter 3. Quality Function Deployment: Building a House of Quality 513.1 Market Research and Determining Customers' Needs 52 3.2 Goal Tree: Spelling Out Unspoken Needs 55 3.3 Building a House of Quality 58 3.4 Deploy Quality Through Design of Experiments 63 3.5 Experiments for Deploying Robust Quality Functions 68 3.6 Summary 73 Bibliography 74Chapter 4. Theory of Inventive Problem Solving: Creating Robust Design Concepts 774.1 Contradiction: The Gateway to New Designs 79 4.2 Thirty-Nine Engineering Parameters to Standardize CTQs 80 4.3 Forty Principles to Identify Design Solutions 84 4.4 Calculating the Average of Control Factor Effects 93 4.5 Calculating the Effects of Noise Factors 96 4.6 Noise-by-Control Interaction Effects 99 4.7 Summary 102 Appendix 103 Bibliography 111Chapter 5. Failure Mode and Effect Analysis: Being Robust to Risk 1135.1 The Historical Context of FMEA 114 5.2 Using FMEA to Prevent Failure Before Any Harm Is Done 117 5.3 Identifying Functions and Failure Modes 118 5.4 Identifying Effects and Severity 123 5.5 Understanding Causes 127 5.6 Assessing Current Controls 129 5.7 Using FMEA for Risk Management 131 5.8 Summary 134 Bibliography 135Chapter 6. The P-Diagram: Laying Out a Robust Design Strategy 1396.1 Experimental Design and the P-Diagram 139 6.2 Quality Loss Function 147 6.3 Noise Factor Management Strategies 150 6.4 Three Phases: From Thought to Things 156 6.5 Summary 159 Bibliography 160Chapter 7. Parameter Design: Optimizing Control Factor Levels 1637.1 Identify Project and Team 166 7.2 Formulate Ideal Function 168 7.3 Formulate Dynamic Parameter Design 171 7.4 Assign Control Factors to an Inner Array 174 7.5 Assign Noise Factors and Signal to an Outer Array 178 7.6 Conduct the Experiment and Collect Data 183 7.7 Analyze the Data and Select an Optimal Design 186 7.8 Summary 192 Bibliography 193Chapter 8. Tolerance Design: Minimizing Life-Cycle Cost 1958.1 Tolerance Design versus Tolerancing 197 8.2 Reduction in Variability 201 8.3 Tightening Tolerance Selectively to Maximize Quality-versus-Cost Tradeoffs 203 8.4 Quantifying the Quality Loss Function 204 8.5 A Wheatstone Bridge System 210 8.6 Summary 213 Bibliography 216Chapter 9. Reliability Design: Giving Customers Long-Lasting Satisfaction 2199.1 Reliability and Six Sigma 220 9.2 Reliability and Stress-Strength Interference 231 9.3 Stress-Strength Interference Sigma Calculations 241 9.4 Summary 248 Bibliography 248Appendix. The Process Map: Engineering Robust Products with Six Sigma 251Index 255


Dr. John X. Wang, a manager of reliability engineering at Maytag Corporation, taught Maytags Design for Six Sigma training courses. He served as Six Sigma Master Black Belt certified by Visteon (where he led Design for Six Sigma training programs) and as Six-Sigma Black Belt certified by General Electric (where he led Design for Six Sigma best practice projects). He has been an American Society for Quality Certified Reliability Engineer and an International Quality Federation Certified Six Sigma Master Black Belt. 0131448552AB02172005

EAN: 9780131448551
ISBN: 0131448552
Untertitel: Sprache: Englisch.
Erscheinungsdatum: März 2005
Seitenanzahl: 264 Seiten
Format: gebunden
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