Fatigue and Fracture Reliability Engineering

Fatigue and Fracture Reliability Engineering

von: Jun Jiang Xiong, R.A. Shenoi

Springer-Verlag, 2011

ISBN: 9780857292186 , 214 Seiten

Format: PDF

Kopierschutz: Wasserzeichen

Windows PC,Mac OSX Apple iPad, Android Tablet PC's

Preis: 149,79 EUR

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Fatigue and Fracture Reliability Engineering


 

Preface

5

Contents

10

Deterministic Theorem on Fatigue and Fracture

13

1.1 Introduction

13

1.2 Fatigue Failure Character and Fracture Analysis

14

1.3 Cyclic Stress and S–N Curve

16

1.4 Constant Life Curve and Generalized Fatigue S–N Surface

19

1.5 Stress State and Growth Mode of Penetrated Crack

22

1.6 Crack Growth Rate and Generalized Fracture S– N Surface

30

1.7 Total Life Prediction

36

References

37

Reliability and Confidence Levels of Fatigue Life

39

2.1 Introduction

39

2.2 Basic Concepts in Fatigue Statistics

40

2.3 Probability Distribution of Fatigue Life

49

2.4 Point Estimation of Population Parameter

59

2.5 Interval Estimation of Population Mean and Standard Deviation

62

2.6 Interval Estimation of Population Percentile

68

References

73

Principles Underpinning Reliability based Prediction of Fatigue and Fracture Behaviours

74

3.1 Introduction

74

3.2 A Randomized Approach to a Deterministic Equation

75

3.3 Single-Point Likelihood Method

86

3.4 Generalized Constant Life Curve and Two-Dimensional Probability Distribution of Generalized Strength

90

3.5 Full-range S–N Curve and Crack Growth Rate Curve with Four Parameters

101

3.6 Reliability Determination of Fatigue Behaviour Based on Incomplete Data

108

References

113

Data Treatment and Generation of Fatigue Load Spectrum

115

4.1 Introduction

115

4.2 Rain Flow-Loop Line Scheme

117

4.3 Two-Dimensional Probability Distribution of Fatigue Load

124

4.4 Quantification Criteria to Identify Load Cycle

126

4.5 Equivalent Damage Formulations

131

4.6 Experimental Verification

133

4.7 Application in Full-Scale Fatigue Test of Helicopter Tail

139

References

142

Reliability Design and Assessment for Total Structural Life

144

5.1 Introduction

144

5.2 Probability Method for Infinite Life Design

145

5.3 A Generalised Interference Model

147

5.4 Fracture Interference Model

149

5.5 Reduction Factor

150

5.6 Scatter Factor

153

5.7 Durability Model to Assess Economic Structural Life

157

References

164

Reliability Prediction for Fatigue Damage and Residual Life in Composites

166

6.1 Introduction

166

6.2 Two-Stage Theory on Composite Fatigue Damage

168

6.3 Fatigue-Driven Residual Strength Model based on Controlling Fatigue Stress

170

6.4 Fatigue-Driven Residual Strength Model based on Controlling Fatigue Strain

178

6.5 Constitutive Relations for Composite Damage

187

6.6 Stress Concentration of Notched Anisotropic Laminate

193

6.7 Composite Damage Evolution Equation and Generalized r– N Surface

196

References

198

Chaotic Fatigue

200

7.1 Introduction

200

7.2 Nonlinear Differential Kinetic Model of Atomic Motion at Crack Tip

202

7.3 Hopf Bifurcation of Atomic Motion at Crack Tip

207

7.4 Global Bifurcation of Atomic Motion at Crack Tip

211

7.5 Stochastic Bifurcation of Atomic Motion at Crack Tip

213

7.6 Solution of Fatigue Damage FPK ( Fokker- Planc- Kolgmorov) Equation

216

7.7 Damage Probability Distributions for Fatigue Crack Formation and Propagation

218

References

222