Robust Design Methodology for Reliability

Preface Acknowledgements About the Editors Contributors PART One METHODOLOGY 1 Introduction Bo Bergman and Martin Arvidsson 1.1 Background 1.2 Failure Mode Avoidance 1.3 Robust Design 1.4 Comments and Suggestions for Further Reading References 2 Evolution of Reliability Thinking - Countermeasures for Some Technical Issues Åke Lönnqvist 2.1 Introduction 2.2 Method 2.3 An Overview of the Initial Development of Reliability Engineering 2.4 Examples of Technical Issues and Reliability Countermeasures 2.5 Discussion and Future Research 2.6 Summary and Conclusions References 3 Principles of Robust Design Methodology Martin Arvidsson and Ida Gremyr 3.1 Introduction 3.2 Method 3.3 Results and Analysis 3.4 Discussion 3.5 Conclusions References PART Two METHODS 4 Including Noise Factors in Design Failure Mode and Effect Analysis (D-FMEA) - A Case Study at Volvo Car Corporation Åke Lönnqvist 4.1 Introduction 4.2 Background 4.3 Method 4.4 Result 4.5 Discussion and Further Research 4.6 Summary References 5 Robust Product Development Using Variation Mode and Effect Analysis Alexander Chakhunashvili, Stefano Barone, Per Johansson and Bo Bergman 5.1 Introduction 5.2 Overview of the VMEA Method 5.3 The Basic VMEA 5.4 The Enhanced VMEA 5.5 The Probabilistic VMEA 5.6 An Illustrative Example 5.7 Discussion and Concluding Remarks Appendix: Formal Justification of the VMEA Method References 6 Variation Mode and Effect Analysis: An Application to Fatigue Life Prediction Pär Johannesson, Thomas Svensson, Leif Samuelsson, Bo Bergman and Jacques de Maré 6.1 Introduction 6.2 Scatter and Uncertainty 6.3 A Simple Approach to Probabilistic VMEA 6.4 Estimation of Prediction Uncertainty 6.5 Reliability Assessment 6.6 Updating the Reliability Calculation 6.7 Conclusions and Discussion References 7 Predictive Safety Index for Variable Amplitude Fatigue Life Thomas Svensson, Jacques de Maré and Pär Johannesson 7.1 Introduction 7.2 The Load-Strength Reliability Method 7.3 The Equivalent Load and Strength Variables 7.4 Reliability Indices 7.5 The Gauss Approximation Formula 7.6 The Uncertainty Due to the Estimated Exponent ² 7.7 The Uncertainty Measure of Strength 7.8 The Uncertainty Measure of Load 7.9 The Predictive Safety Index 7.10 Discussion Appendix References 8 Monte Carlo Simulation versus Sensitivity Analysis Sara Lorén, Pär Johannesson and Jacques de Mar´e 8.1 Introduction 8.2 Transfer Function 8.3 Example from an Industrial Context 8.4 Highly Nonlinear Transfer Function 8.5 Total Variation for Logarithmic Life 8.6 Conclusions References PART Three MODELLING 9 Model Complexity Versus Scatter in Fatigue Thomas Svensson 9.1 Introduction 9.2 A Statistical Model 9.3 Design Concepts 9.4 A Crack Growth Model 9.5 Partly Measurable Variables 9.6 Conclusions References 10 Choice of Complexity in Constitutive Modelling of Fatigue Mechanisms Erland Johnson and Thomas Svensson 10.1 Background 10.2 Questions 10.3 Method 10.4 Empirical Modelling 10.5 A Polynomial Example 10.6 A General Linear Formulation 10.7 A Fatigue Example References 11 Interpretation of Dispersion Effects in a Robust Design Context Martin Arvidsson, Ida Gremyr and Bo Bergman 11.1 Introduction 11.2 Dispersion Effects 11.3 Discussion References 12 Fatigue Damage Uncertainty Anders Bengtsson, Klas Bogsjöand Igor Rychlik 12.1 Introduction 12.2 Fatigue Review 12.3 Probability for Fatigue Failure - Safety Index 12.4 Computation of E [D(T ) k] and V [D(T ) k] 12.5 Non Gaussian Loads - Examples References 13 Widening the Perspectives Bo Bergman and Jacques de Maré 13.1 Background 13.2 Additional Engineering Perspectives on Reliability 13.3 Organizational Perspectives on Reliability 13.4 Industrialization of Robust Design Methodology 13.5 Adoptions of Fatigue Reliability Methodology 13.6 Learning for the Future References List of Abbreviations Index