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Full Description
As the Lead Reliability Engineer for Ford Motor Company, Guangbin Yang is involved with all aspects of the design and production of complex automotive systems. Focusing on real-world problems and solutions, Life Cycle Reliability Engineering covers the gamut of the techniques used for reliability assurance throughout a product's life cycle. Yang pulls real-world examples from his work and other industries to explain the methods of robust design (designing reliability into a product or system ahead of time), statistical and real product testing, software testing, and ultimately verification and warranting of the final product's reliability
Contents
1 Reliability Engineering and Product Life Cycle 1
1.1 Reliability Engineering 1
1.2 Product Life Cycle 2
1.3 Integration of Reliability Engineering into the Product Life Cycle 5
1.4 Reliability in the Concurrent Product Realization Process 6
Problems 7
2 Reliability Definition Metrics and Product Life Distributions 9
2.1 Introduction 9
2.2 Reliability Definition 10
2.3 Reliability Metrics 12
2.4 Exponential Distribution 17
2.5 Weibull Distribution 19
2.6 Mixed Weibull Distribution 22
2.7 Smallest Extreme Value Distribution 24
2.8 Normal Distribution 26
2.9 Lognormal Distribution 28
Problems 31
3 Reliability Planning and Specification 33
3.1 Introduction 33
3.2 Customer Expectations and Satisfaction 34
3.3 Reliability Requirements 41
3.4 Reliability Program Development 48
3.5 Reliability Design and Design for Six Sigma 61
Problems 64
4 System Reliability Evaluation and Allocation 65
4.1 Introduction 65
4.2 Reliability Block Diagram 66
4.3 Series Systems 68
4.4 Parallel Systems 71
4.5 Mixed Configurations 73
4.6 k-out-of-n Systems 77
4.7 Redundant Systems 79
4.8 Reliability Evaluation of Complex Systems 84
4.9 Confidence Intervals for System Reliability 91
4.10 Measures of Component Importance 99
4.11 Reliability Allocation 106
Problems 118
5 Reliability Improvement Through Robust Design 122
5.1 Introduction 122
5.2 Reliability and Robustness 123
5.3 Reliability Degradation and Quality Loss 125
5.4 Robust Design Process 129
5.5 Boundary Definition and Interaction Analysis 132
5.6 P-Diagram 133
5.7 Noise Effects Management 134
5.8 Design of Experiments 136
5.9 Experimental Life Data Analysis 148
5.10 Experimental Degradation Data Analysis 152
5.11 Design Optimization 156
5.12 Robust Reliability Design of Diagnostic Systems 172
5.13 Case Study 179
5.14 Advanced Topics in Robust Design 181
Problems 190
6 Potential Failure Mode Avoidance 194
6.1 Introduction 194
6.2 Failure Mode and Effects Analysis 195
6.3 Advanced Topics in FMEA 208
6.4 Fault Tree Analysis 212
6.5 Advanced Topics in FTA 225
6.6 Computer-Aided Design Controls 230
Problems 235
7 Accelerated Life Tests 237
7.1 Introduction 237
7.2 Development of Test Plans 238
7.3 Common Stresses and Their Effects 246
7.4 Life-Stress Relationships 252
7.5 Graphical Reliability Estimation at Individual Test Conditions 266
7.6 Analytical Reliability Estimation at Individual Test Conditions 274
7.7 Reliability Estimation at Use Condition 292
7.8 Compromise Test Plans 302
7.9 Highly Accelerated Life Tests 326
Problems 327
8 Degradation Testing and Analysis 332
8.1 Introduction 332
8.2 Determination of the Critical Performance Characteristic 333
8.3 Reliability Estimation from Pseudo life 334
8.4 Degradation Analysis with Random-Effect Models 337
8.5 Degradation Analysis for Destructive Inspections 345
8.6 Stress-Accelerated Degradation Tests 351
8.7 Accelerated Degradation Tests with Tightened Thresholds 358
8.8 Accelerated Degradation Test Planning 364
Problems 373
9 Reliability Verification Testing 379
9.1 Introduction 379
9.2 Planning Reliability Verification Tests 380
9.3 Bogey Testing 383
9.4 Sample Size Reduction by Tail Testing 389
9.5 Sequential Life Testing 394
9.6 Reliability Verification Using Prior Information 406
9.7 Reliability Verification Through Degradation Testing 408
Problems 410
10 Stress Screening 412
10.1 Introduction 412
10.2 Screening Techniques 413
10.3 Design of Screen Plans 415
10.4 Principle of Degradation Screening 417
10.5 Part-Level Degradation Screening 419
10.6 Module-Level Screening 425
10.7 Module Reliability Modeling 431
10.8 Cost Modeling 433
10.9 Optimal Screen Plans 435
Problems 438
11 Warranty Analysis 442
11.1 Introduction 442
11.2 Warranty Policies 443
11.3 Warranty Data Mining 447
11.4 Reliability Estimation from Warranty Claim Times 451
11.5 Two-Dimensional Reliability Estimation 454
11.6 Warranty Repair Modeling 470
11.7 Warranty Cost Estimation 473
11.8 Field Failure Monitoring 477
11.9 Warranty Cost Reduction 480
Problems 482
Appendix: Orthogonal Arrays Linear Graphs and Interaction Tables 486
References 495
Index 511
