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Summary
Summary
As we move closer to a genuinely global economy, the pressure to develop highly reliable products on ever-tighter schedules will increase. Part of a designer's "toolbox" for achieving product reliability in a compressed time frame should be a set of best practices for utilizing accelerated stress testing (AST).
The Accelerated Stress Testing Handbook delineates a core set of AST practices as part of an overall methodology for enhancing hardware product reliability. The techniques presented will teach readers to identify design deficiencies and problems with component quality or manufacturing processes early in the product's life, and then to take corrective action as quickly as possible. A wide array of case studies gleaned from leading practitioners of AST supplement the theory and methodology, which will provide the reader with a more concrete idea of how AST truly enhances quality in a reduced time frame.
Important topics covered include:
Theoretical basis for AST General AST best practices AST design and manufacturing processes AST equipment and techniques AST process safety qualification In this handbook, AST cases studies demonstrate thermal, vibration, electrical, and liquid stress application; failure mode analysis; and corrective action techniques. Individuals who would be interested in this book include: reliability engineers and researchers, mechanical and electrical engineers, those involved with all facets of electronics and telecommunications product design and manufacturing, and people responsible for implementing quality and process improvement programs.Author Notes
About the Editors H. Anthony Chan has been with AT&T Labs and the former AT&T Bell Labs for 14 years, specializing in product development and manufacturing, including interconnection technology, manufacture assembly and reliability, network management, and wireless network. He has been responsible for R&D in robust product design and manufacture and for guiding various manufacturing locations in planning and conducting reliability and stress testing programs. Dr. Chan has taught several training courses in reliability and stress testing and is a regular speaker on these topics. Moreover, he is an adjunct faculty member at the Hong Kong Polytechnic University.
Paul J. Englert is a distinguished member of the technical staff in the Product Realization Department of Lucent Technologies' Wireless Networks Group. He is responsible for wide-scale deployment of mechanical computer-aided design (CAD) and work-in-progress data management solutions. Also, Dr. Englert develops Web-based, multimedia training tools for engineering practices and CAD tools and has lectured in China, Singapore, South Korea, and Taiwan on these subjects. Also, his experience spans a broad spectrum of projects in assembly, manufacturing, stress testing, chemical solvent replacement process development, and statistical modeling.
Table of Contents
Foreword | p. xvii |
Preface | p. xix |
Acknowledgments | p. xxi |
Part I Overview | p. 1 |
Chapter 1 Introduction | p. 3 |
1.1 Synopsis of Reliability Trends and Aim of Book | p. 3 |
1.2 Background of Military and Industrial Stress Testing Practices | p. 5 |
1.3 Overview of the AST Handbook | p. 6 |
References | p. 9 |
Chapter 2 Principles of Stress Testing | p. 10 |
2.1 Rationale for Stress Testing | p. 11 |
2.1.1 Product Robustness | p. 11 |
2.1.2 AST and Accelerated Testing | p. 12 |
2.1.3 AST and the Bath-Tub Curve | p. 14 |
2.1.4 Bimodal Product Strength Distribution | p. 14 |
2.1.5 Relevance of AST Failures | p. 17 |
2.1.6 Types of Stress Failures | p. 18 |
2.2 Stress Testing Technical and Implementation Issues | p. 19 |
2.2.1 Modes of AST | p. 19 |
2.2.2 Other Forms of Stress Testing | p. 20 |
2.2.3 Stress Stimuli and Flaws Precipitated by Them | p. 21 |
2.2.4 Stress Stimuli Selection | p. 22 |
2.2.5 Stress Level Determination | p. 23 |
2.2.6 Safety Testing | p. 23 |
2.2.7 Fault Simulation and Detection Issues | p. 24 |
2.2.8 Form of Product to Test | p. 25 |
2.3 Economic Issues | p. 27 |
2.3.1 Benefits | p. 27 |
2.3.2 Cost of AST | p. 27 |
2.3.3 Optimizing the Application of AST | p. 28 |
References | p. 29 |
Part II Process and Guidelines | p. 31 |
Chapter 3 Stress Testing Program: Generic Processes | p. 33 |
3.1 Overview of the Stress Testing Strategy | p. 33 |
3.1.1 Select AST Options | p. 36 |
3.2 Design Stress Testing (D-AST) | p. 36 |
3.2.1 Plan Program (A) | p. 36 |
3.2.2 Baseline Product (B) | p. 36 |
3.2.3 Take Corrective Action (C) | p. 37 |
3.3 Manufacturing Qualification Stress Testing (MQ-AST) | p. 38 |
3.3.1 Plan Program (A) | p. 39 |
3.3.2 Baseline Product (B) | p. 39 |
3.3.3 Take Corrective Action (C) | p. 39 |
3.3.4 Develop Manufacturing AST Regimen (D) | p. 39 |
3.3.5 Demonstrate Safety of the AST Regimen (E) | p. 40 |
3.3.6 Perform Manufacturing AST (F) | p. 40 |
3.4 Periodic Qualification Stress Testing (PQ-AST) | p. 40 |
3.5 Production Sampling Stress Test (PS-AST) | p. 41 |
3.5.1 Plan Program (A) | p. 41 |
3.5.2 Develop Manufacturing AST Regimen (D) | p. 41 |
3.5.3 Perform Manufacturing AST Regimen (F) | p. 42 |
3.5.4 Take Corrective Action (C) | p. 42 |
3.5.5 Optimize Manufacturing AST Regimen (G) | p. 43 |
3.6 Full Production Stress Testing (FP-AST) | p. 43 |
Chapter 4 Stress Testing Program Subprocesses | p. 44 |
4.1 Plan Program Subprocess (A) | p. 44 |
4.1.1 TASK 1: Form Team and Develop AST Strategy | p. 44 |
4.1.2 TASK 2: Review and Issue AST Strategy | p. 46 |
4.1.3 TASK 3: Write the AST Plan | p. 47 |
4.1.4 TASK 4: Review and Issue AST Plan | p. 47 |
4.1.5 TASK 5: AST Tools Realization | p. 48 |
4.2 Baseline Product Subprocess (B) | p. 50 |
4.2.1 TASK 1: Baseline Product | p. 50 |
4.3 Take Corrective Action Subprocess (C) | p. 51 |
4.3.1 TASK 1: Analyze AST Results | p. 51 |
4.3.2 TASK 2: Suggest and Review Corrective Actions | p. 53 |
4.3.3 TASK 3: Develop AST Verification Plan for Corrective Action | p. 54 |
4.3.4 TASK 4: Issue Summary of Lessons Learned | p. 55 |
4.4 Develop Manufacturing Stress Testing Regimen Subprocess (D) | p. 55 |
4.4.1 TASK 1: Determine the Form of Product to be Tested | p. 55 |
4.4.2 TASK 2: Determine What Stress Stimuli Are Effective | p. 56 |
4.5 Demonstrate Safety of the Stress Testing Regimen Subprocess (E) | p. 57 |
4.5.1 TASK 1: Develop AST Safety Strategy | p. 58 |
4.5.2 TASK 2: Write AST Safety Qualification Plan | p. 58 |
4.5.3 TASK 3: Execute Safety Qualification Plan | p. 59 |
4.5.4 TASK 4: Analyze Safety Test Data | p. 60 |
4.5.5 TASK 5: Certify Safety of Candidate AST Regimen | p. 61 |
4.6 Perform Manufacturing Stress Testing Subprocess (F) | p. 61 |
4.6.1 TASK 1: Execute AST Plan | p. 61 |
4.7 Optimize the Manufacturing Stress Testing Regimen Subprocess (G) | p. 62 |
4.7.1 TASK 1: Analyze Manufacturing AST Regimen Data | p. 62 |
4.7.2 TASK 2: Select Manufacturing AST Mode or Regimen | p. 64 |
4.7.3 TASK 3: Develop Evaluation Plan for Trial AST Regimen | p. 64 |
4.7.4 TASK 4: Conduct Evaluation of Trial AST Regimen | p. 65 |
Chapter 5 Guidelines for Design and Manufacturing Stress Testing | p. 66 |
5.1 AST Test Strategy | p. 66 |
5.2 AST Plan | p. 68 |
5.3 Sample Size Selection for Design AST | p. 69 |
5.4 Typical Stress Stimuli and Associated Product Flaws | p. 70 |
5.5 Recommended Stress Levels | p. 71 |
5.6 Baseline Product Test Procedures | p. 77 |
5.7 Failure Mode Analysis and Root Cause Analysis | p. 83 |
5.7.1 Failure Types and Modes Found During Stress Testing | p. 85 |
5.8 Corrective Action and Product Ruggedization | p. 87 |
5.8.1 Design AST Database | p. 87 |
References | p. 90 |
Part III Theory | p. 91 |
Chapter 6 Economics and Optimization | p. 93 |
6.1 Guidelines for Optimizing Manufacturing Stress Testing | p. 93 |
6.1.1 Product Attributes | p. 93 |
6.1.2 Environment for Stress Testing | p. 94 |
6.1.3 The Optimization Process | p. 95 |
6.1.4 Effectiveness of the Stress Regimen | p. 96 |
6.1.5 A/B Comparisons | p. 97 |
6.2 Formulation | p. 97 |
6.3 Reliability Objective | p. 98 |
6.4 Types of Failures Revisited | p. 98 |
6.5 Distribution of Environmental Stresses | p. 98 |
6.6 Effect of Stress Testing | p. 100 |
6.7 Reliability Requirements | p. 101 |
6.8 Requirement on Service-Life Fraction Failed | p. 101 |
6.9 Requirement on Product Strength Distribution | p. 102 |
6.10 Examples | p. 103 |
6.10.1 1 in 100 Service-Life Fraction Failed Requirements | p. 104 |
6.10.2 1 in 1000 Service-Life Fraction Failed Requirements | p. 104 |
6.11 Economic Issues and Optimization | p. 105 |
6.11.1 Reduction in Field Failure Rate | p. 105 |
6.11.2 Potential Benefits | p. 105 |
6.11.3 Potential Costs | p. 106 |
6.12 Net Benefit | p. 106 |
6.13 Optimization | p. 107 |
6.14 Product Considerations | p. 108 |
6.15 Economic Summary | p. 108 |
References | p. 108 |
Chapter 7 Reliability Growth | p. 109 |
7.1 What Is Reliability Growth? | p. 109 |
7.2 How Many Units Must Be Tested? | p. 110 |
7.2.1 Binomial Probabilities | p. 110 |
7.3 Failure Mode Distribution | p. 111 |
7.3.1 Mathematical Substantiation | p. 113 |
7.3.2 Kuklinski Curves | p. 114 |
7.4 How Are These Units Acquired? | p. 118 |
7.4.1 Prototype Production | p. 118 |
7.4.2 Final Product Production | p. 119 |
7.5 The Success of Failures Attained by Stress Testing | p. 120 |
7.5.1 Generic Stresses | p. 120 |
7.5.2 Product-Specific Stresses and Stress Levels | p. 120 |
7.5.3 Relevance of Stress Failures | p. 121 |
7.5.4 Addressing All Failure Modes | p. 122 |
7.5.4.1 Design Defect Tracking | p. 123 |
7.5.4.2 Failure Analysis | p. 124 |
7.6 Results | p. 124 |
7.7 Conclusions | p. 125 |
Acknowledgments | p. 125 |
References | p. 126 |
Chapter 8 Overview of the Failure Analysis Process for Electrical Components | p. 127 |
8.1 Definition of Failure Analysis | p. 127 |
8.2 The Benefits of Performing Failure Analysis | p. 127 |
8.3 Overview of the Failure Analysis Process for Electrical Components | p. 128 |
8.3.1 Understand the Problem | p. 128 |
8.3.2 Examine the Component Package with a Low-Power Microscope | p. 128 |
8.3.3 Verify the Failure | p. 128 |
8.3.4 Nondestructive Evaluation | p. 128 |
8.3.5 Stop, Think, and Plan! | p. 129 |
8.3.6 Decapsulate the Device | p. 129 |
8.3.7 Examine the Interior of the Package and the Die Surface | p. 129 |
8.3.8 Conduct a Physical Analysis | p. 129 |
8.3.9 Evaluate the Data and Come to a Conclusion | p. 129 |
8.3.10 Develop a Corrective Action Recommendation | p. 129 |
8.3.11 Write and Issue a Report (as Required by the Customer) | p. 130 |
8.3.12 Archive the Data and Samples | p. 130 |
8.3.13 Follow Up on Customer's Corrective Action Results | p. 130 |
8.4 Tools for Component Failure Analysis | p. 130 |
8.4.1 Basic (Tools that Every Lab Needs) | p. 130 |
8.4.2 Additional Tools | p. 131 |
8.5 Personnel for Component Failure Analysis | p. 131 |
8.6 Challenges Facing Failure Analysts in the Future | p. 131 |
8.7 What the Customer Can Do to Optimize the Failure Analysis Process | p. 132 |
References | p. 132 |
Part IV Equipment and Techniques | p. 135 |
Chapter 9 Accelerated Stress Testing Equipment and Techniques | p. 137 |
9.1 Introduction | p. 137 |
9.2 Thermal Equipment | p. 137 |
9.2.1 Operating Temperature Range | p. 138 |
9.2.2 Temperature Rate of Change | p. 138 |
9.2.3 Mechanical Refrigeration versus Liquid Nitrogen (LN[subscript 2]) Cooling | p. 140 |
9.2.4 LN[subscript 2] Implementation | p. 141 |
9.3 Vibration Equipment | p. 142 |
9.3.1 Issues for Repetitive Shock Machines Using Pneumatic Vibrators | p. 144 |
9.3.2 Multi-Axial Considerations for Repetitive Shock Machines | p. 145 |
9.3.3 Table Resonances for Repetitive Shock Machines | p. 147 |
9.3.4 g[subscript RMS] versus Peak G Stress | p. 147 |
9.4 Combined Thermal and Vibration Equipment | p. 147 |
9.5 Ancillary Mechanical Equipment for Stress Testing | p. 148 |
9.5.1 Fixturing for Vibration Stressing | p. 148 |
9.5.2 Printed Wiring Board Card Cages Used for Stress Testing | p. 149 |
9.6 Environmental Analysis Equipment Used for Stress Testing | p. 152 |
9.7 Electrical Test Equipment and Software Used for Stress Testing | p. 153 |
9.7.1 AST Test Equipment Hardware | p. 153 |
9.7.2 AST Test Equipment Software | p. 153 |
9.8 Other Stress Options | p. 154 |
Chapter 10 Vibration and Shock Inputs Identify Some Failure Modes | p. 155 |
10.1 Why Important? | p. 155 |
10.2 Vibration Measurements | p. 155 |
10.2.1 Prior Knowledge | p. 155 |
10.2.2 Vibration and Shock Measurement--Units | p. 157 |
10.2.3 Vibration and Shock Sensors (Field and Laboratory) | p. 159 |
10.2.3.1 Displacement Sensors | p. 159 |
10.2.3.2 Velocity Sensors | p. 160 |
10.2.3.3 Accelerometers | p. 160 |
10.2.3.4 Force Sensors | p. 161 |
10.2.4 Signal Conditioning | p. 162 |
10.2.5 Display and Recording Instruments | p. 163 |
10.2.6 Sources of Sensor Error | p. 163 |
10.3 Controllable Sources of Vibration and Mechanical Shock | p. 164 |
10.3.1 Electrodynamic (Electromagnetic) Shakers | p. 164 |
10.3.1.1 Shaker Armature | p. 164 |
10.3.1.2 Magnetic Field | p. 165 |
10.3.1.3 Alternating Current Generates Force | p. 165 |
10.3.1.4 Force Ratings | p. 165 |
10.3.1.5 Vertical or Horizontal Thrusting | p. 167 |
10.3.1.6 Isolation from Building | p. 167 |
10.3.2 Power Amplifiers | p. 167 |
10.3.2.1 Delivering Adequate Alternating Current for Shaker Driver Coil | p. 167 |
10.3.2.2 Momentary Power Peaks | p. 168 |
10.3.2.3 Importance of Low Distortion | p. 168 |
10.3.2.4 Direct Current for Shaker Field Winding | p. 168 |
10.3.3 Controls | p. 168 |
10.3.3.1 Controls for Sine Vibration Testing | p. 169 |
10.3.3.2 Controls for Random Vibration Testing | p. 169 |
10.3.3.3 Tolerances | p. 169 |
10.3.3.4 Abort Limits | p. 169 |
10.3.3.5 Controls for Shock Testing | p. 170 |
10.3.4 Test Fixtures | p. 170 |
10.4 Characteristics of Shock, Sine, and Random Vibration | p. 170 |
10.4.1 Mechanical Shock Pulse | p. 170 |
10.4.2 Sinusoidal Vibration and Its Effects | p. 172 |
10.4.3 Random Vibration and Its Effects | p. 173 |
10.4.4 Amplitude Probability Density | p. 174 |
10.4.5 Acceleration Spectral Density | p. 176 |
10.5 Multi-Axis Excitation | p. 176 |
10.6 Repetitive Shock Machines for Multi-Axis Stress Testing | p. 178 |
10.7 Using Random Vibration and Repetitive Shock for Stress Testing | p. 178 |
10.7.1 What Spectrum? | p. 179 |
10.7.2 What Intensity? | p. 180 |
10.7.3 For How Long? | p. 180 |
10.7.4 Is Our Production Screening Damaging Good Hardware? | p. 180 |
Chapter 11 Relative Effectiveness of Thermal Cycling Versus Burn-In | p. 182 |
11.1 Introduction | p. 182 |
11.2 Results for Thermal Cycling Alone | p. 183 |
11.3 Intermittents and First Events | p. 183 |
11.4 Thermal Cycling versus Burn-In | p. 185 |
11.5 Failure Mechanisms | p. 186 |
11.6 Conclusion | p. 187 |
Acknowledgments | p. 188 |
Chapter 12 Accelerated Qualification of Electronic Assemblies Under Combined Temperature Cycling and Vibration Environments: Is Miner's Hypothesis Valid? | p. 189 |
12.1 Introduction | p. 190 |
12.2 Combined Temperature and Vibration Accelerated Life Tests | p. 191 |
12.3 The Macroscopic Incremental Damage Superposition Approach (Macro-IDSA) | p. 194 |
12.4 The Micromechanistic Incremental Damage Superposition Approach (Micro-IDSA) | p. 197 |
12.5 Conclusions | p. 200 |
Acknowledgments | p. 201 |
References | p. 201 |
Chapter 13 Liquid Environmental Stress Testing (Lest) | p. 203 |
13.1 Advantages of Liquid Environmental Stress Testing | p. 203 |
13.2 Liquid Environmental Stress Testing Facility | p. 204 |
13.2.1 Overview of LEST Facility Features | p. 204 |
13.3 Thermal Considerations in Liquid Environmental Stress Testing | p. 208 |
13.4 Conclusions | p. 214 |
References | p. 214 |
Chapter 14 Safety Qualification of Stress Testing | p. 216 |
14.1 Stress Testing Safety Qualification Program | p. 217 |
14.1.1 Generic Component Qualification | p. 219 |
14.1.1.1 IC Qualification | p. 219 |
14.1.1.2 Discrete Component Qualification | p. 220 |
14.1.2 Specific Code Qualification | p. 220 |
14.1.2.1 The Qualification Process | p. 221 |
14.1.2.2 AST with Voltage Bias | p. 221 |
14.1.2.3 THB Testing | p. 222 |
14.1.2.4 Product Destruct Limit Testing | p. 223 |
14.2 Safety Qualification Programs for Other Types of Stresses | p. 223 |
References | p. 224 |
Part V Best Practices Case Studies in Computer, Communications, and Other Industries | p. 227 |
Chapter 15 Production Ast With Computers Using the Taguchi Method | p. 229 |
15.1 Introduction | p. 229 |
15.2 Objectives | p. 230 |
15.3 Stress Overview | p. 230 |
15.4 Stress Screen Designs | p. 230 |
15.4.1 Temperature Range | p. 230 |
15.4.2 Temperature Change Rate | p. 231 |
15.4.3 Power Cycling | p. 231 |
15.4.4 Vibration Screen Determination | p. 231 |
15.4.5 Fixture Design | p. 232 |
15.4.6 Vibration Stress Duration | p. 232 |
15.4.7 Diagnostic Monitoring | p. 232 |
15.5 Experiment Overview | p. 232 |
15.5.1 Test Process Product Flow | p. 233 |
15.6 The Taguchi Method | p. 234 |
15.6.1 Sample Size Selection | p. 235 |
15.7 Response Variable Results and Conclusions of the Taguchi Experiment | p. 236 |
15.7.1 Triaxial Random Vibration | p. 236 |
15.7.2 Temperature Cycling | p. 237 |
15.7.3 Power Cycling | p. 237 |
15.8 Intra-Experiment Summary | p. 237 |
15.9 Taguchi Method Conclusion | p. 238 |
15.10 Terms | p. 239 |
Acknowledgments | p. 239 |
References | p. 239 |
Chapter 16 Design Ast With Vendor Electronics | p. 240 |
16.1 Introduction | p. 240 |
16.2 The Test-Analyze-Correct-Verify Process | p. 240 |
16.3 Accelerated Reliability Techniques (ART) | p. 242 |
16.3.1 Stress Tool Box | p. 243 |
16.3.2 Broad Spectrum Stress Portfolio | p. 243 |
16.4 Original Equipment Manufacturer (OEM) Power Supply Example | p. 244 |
16.5 Conclusions | p. 251 |
Acknowledgments | p. 252 |
References | p. 252 |
Chapter 17 Design and Production Ast With Power Supplies | p. 253 |
17.1 Background | p. 253 |
17.1.1 Switching Power Supplies | p. 253 |
17.2 STRIFE in New Product Development (Design AST) | p. 253 |
17.2.1 Vibration | p. 254 |
17.2.2 Thermal Test | p. 255 |
17.2.3 Electrical Overstress | p. 256 |
17.2.4 Power Cycling | p. 256 |
17.2.5 Results | p. 256 |
17.2.6 Conclusions with STRIFE in Product Development (Design AST) | p. 257 |
17.3 ESS in Manufacturing (Production AST) | p. 257 |
17.3.1 Burn-In | p. 257 |
17.3.1.1 Burn-In Conditions | p. 258 |
17.3.1.2 Results | p. 258 |
17.3.2 Vibration Screening | p. 259 |
17.3.2.1 Conditions | p. 259 |
17.3.2.2 Results | p. 260 |
17.3.3 Conclusions with ESS in Manufacturing (Production AST) | p. 260 |
17.4 Final Conclusions | p. 261 |
Acknowledgments | p. 262 |
Chapter 18 Design and Production Ast With Computers | p. 263 |
18.1 Background | p. 263 |
18.1.1 A Massively Parallel RISC-Based Server | p. 263 |
18.2 The ESS Program | p. 263 |
18.2.1 Integration | p. 264 |
18.3 Conclusions | p. 268 |
Acknowledgments | p. 268 |
Definitions and Acronyms | p. 268 |
Reference | p. 268 |
Chapter 19 Qualifications and Production Sampling Ast With Printed Circuit Boards | p. 269 |
19.1 Introduction | p. 269 |
19.2 Proposed Test and Theory | p. 270 |
19.3 Ongoing Monitoring of the Production Process | p. 271 |
19.4 Screen Development | p. 273 |
19.5 Equipment | p. 274 |
19.6 Results of the Initial Testing | p. 275 |
19.7 Conclusions | p. 278 |
Acknowledgments | p. 280 |
Glossary | p. 280 |
References | p. 281 |
Chapter 20 Manufacturing Ast With Telecommunication Products | p. 282 |
20.1 Introduction | p. 282 |
20.2 EST During Product Design (Design AST) | p. 284 |
20.3 Production EST (AST) | p. 285 |
20.3.1 Techniques of Production EST (AST) | p. 286 |
20.3.2 FMA and Corrective Action | p. 287 |
20.4 Production EST (AST) Studies at ATandT | p. 288 |
20.4.1 Facilities Hardware and Software | p. 289 |
20.4.2 Thermal Profile | p. 291 |
20.5 Results of the Thermal Cycling Studies | p. 291 |
20.5.1 Phase I Study | p. 292 |
20.5.2 Phase IIa | p. 292 |
20.5.3 Phase IIb | p. 294 |
20.5.4 Phase III | p. 294 |
20.5.5 Phase IV | p. 296 |
20.5.6 Future Studies | p. 296 |
20.5.7 Conclusion | p. 297 |
Acknowledgments | p. 297 |
References | p. 298 |
Chapter 21 Production Ast With Computer Disks | p. 300 |
21.1 Introduction | p. 300 |
21.2 Growing Reliability | p. 301 |
21.3 Problem | p. 302 |
21.4 Case Study | p. 302 |
21.5 Product Flow | p. 303 |
21.6 Profile Utilized | p. 304 |
21.7 A Look at the Failure Mechanisms | p. 304 |
21.8 The Bottom Line | p. 306 |
21.9 Conclusion | p. 307 |
References | p. 307 |
Chapter 22 Benchmarking | p. 308 |
22.1 Introduction to Benchmarking | p. 308 |
22.1.1 Traditional Benchmarking | p. 310 |
22.1.2 Product Benchmarking | p. 313 |
22.1.3 AST Benchmarking | p. 316 |
22.2 The AST Benchmarking Process | p. 317 |
22.3 Benchmarking Partnerships--Otis Elevator Company and United Technologies/3Com Corporation (U.S. Robotics) | p. 325 |
22.4 Benchmarking AST Survey Data | p. 327 |
22.5 Summary | p. 329 |
Acknowledgments | p. 329 |
References | p. 329 |
Appendix A Environmental Stress Screening Questionnaire--1997 | p. 330 |
Appendix B Environmental Stress Screening Questionnaire--1996 and 1997 Results | p. 333 |
Glossary of Stress Testing Terminology | p. 338 |
Bibliography | p. 340 |
Index | p. 365 |
Epilogue | p. 369 |
About the Editors | p. 371 |