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E-raamat: Multiaxial Notch Fracture and Fatigue [Taylor & Francis e-raamat]

Xiangqiao Yan (Harbin Institute of Technology, China)

Formaat: 349 pages, 271 Tables, black and white; 133 Line drawings, black and white; 133 Illustrations, black and white
Ilmumisaeg: 28-Feb-2023
Kirjastus: CRC Press
ISBN-13: 9781003356721

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Formaat: 349 pages, 271 Tables, black and white; 133 Line drawings, black and white; 133 Illustrations, black and white
Ilmumisaeg: 28-Feb-2023
Kirjastus: CRC Press
ISBN-13: 9781003356721

Teised raamatud teemal:

Rohkem infot Taylor & Francis e-raamatute kohta

Raamatu kodulehekülg: https://www.taylorfrancis.com/books/9781003356721

This book presents the unified fatigue life prediction equation for low/medium/high cycle fatigue of metallic materials relevant to plain materials and notched components. The unified fatigue life prediction equation is the Wöhler equation, in which the "stress-based intensity parameter" is calculated based on the linear-elastic analysis.

A local approach for the static fracture analysis for notched components is presented based on the notch linear-elastic stress field. In the local approach, a stress intensity parameter is taken as a stress-based intensity parameter. Experimental verifications show that the local approach is also suited for the static fracture analysis for notched components made of ductile materials.

The book is also concerned with a material failure problem under the multiaxial stress states. A concept of the material intensity parameter is introduced in this book. It is a material property parameter that depends on both Mode-I fracture toughness and Mode-II (or Mode-III) fracture toughness and the multiaxial parameter to characterize the variation of the material failure resistance (notch fracture toughness) with the multiaxial stresses states. The failure condition to assess mixed-mode fracture of notched (or cracked) components is stated as the stress-based intensity parameter being equal to the material intensity parameter.

With respect to the traditional S-N equation, a similar S-N equation is presented and verified to have high accuracy.

This book will be of interest to professionals in the field of fatigue and fracture for both brittle and ductile materials.

Preface

Author

List of Abbreviations

xvii

Chapter 1 Introduction

(18)

1.1 A Brief Description of the Multiaxial Fatigue Limit Equation

(1)

1.2 An Extension of the Multiaxial Fatigue Limit Equation to Mixed Mode Cracks

(2)

1.3 An Extension of the Multiaxial Fatigue Limit Equation to Mode I/III V-Notches

(3)

1.4 An Extension of the Multiaxial Fatigue Limit Equation to Mode I/III Rounded V-Notches

(1)

1.5 Three Comments on the Empirical Failure Equation

(3)

1.6 A Comment on the Unified Prediction Equation for a Low/Medium/High Cycle Fatigue of Metallic Materials (From Plain Materials to Notched Materials)

(7)

References

(2)

Appendix A A Practicability of Establishing the Unified Prediction Equation for a Low/Medium/High Cycle Fatigue of Metallic Materials

(5)

Chapter 2 Applicability of the Wohler Curve Method for a Low/Medium/High Cycle Fatigue of Metallic Materials

(62)

2.1 Introduction

(2)

2.2 Practicability of the Wohler Curve Method for a Low-Cycle Fatigue of Metallic Materials

(14)

2.2.1 A Description on the Practicability of the Wohler Curve Method for a Low-Cycle Fatigue of Metallic Materials

(4)

2.2.2 Experimental Verifications

(10)

2.2.3 A Comment on This Section

(1)

2.3 Applicability of the Wohler Curve Method for a Low/Medium/High Cycle Fatigue of Metallic Materials

(3)

2.3.1 A Proper Mechanical Quantity in the Fatigue Life Prediction Equation

(1)

2.3.2 Multiaxial Fatigue Life Prediction Equation

(2)

2.4 Experimental Verifications and Discussions

(15)

2.5 Conclusions and Final Comments

(28)

References

(3)

Appendix A Experimental Investigations: The Wohler Curve Method Is Well Suited for the Low-Cycle Fatigue Life Analysis of Metallic Materials by the Low-Cycle Fatigue Test Data of Metallic Materials from the Literature

(8)

Appendix B Experimental Investigations: The Wohler Curve Method Is Well Suited for the Low-Cycle Fatigue Life Analysis of Metallic Materials by Basquin's Curve in the Strain-Life Curve Figure of Metallic Material from the Literature

(9)

Appendix C Experimental Investigations: The Wohler Curve Method Is Well Suited for Fatigue Life Assessment of a Low/Medium/High Cycle Fatigue of Metallic Materials by Strain Control Experimental Fatigue Data from the Literature

(7)

Chapter 3 Notch S-N Equation for a Low/Medium/High Cycle Fatigue of Metallic Materials

(70)

3.1 Introduction

(1)

3.2 A Brief Description of the Unified Lifetime Estimation Equation of a Low/Medium/High Cycle Fatigue of Metallic Materials

(11)

3.2.1 A Description of the Practicability of the Wohler Curve Method for a Low-Cycle Fatigue of Metallic Materials

(9)

3.2.2 The Unified Lifetime Estimation Equation of a Low/Medium/High Cycle Fatigue of Metallic Materials

(2)

3.3 S-N Equation of Notch Specimens

(6)

3.3.1 A Brief Description of a Linear Elastic Notch Stress Field

(1)

3.3.2 Notch S-N Equation Under Mode I Loading

(3)

3.3.3 Notch S-N Equation Under Mode III Loading

(1)

3.3.4 Notch S-N Equation Under Mode I/III Loading

(1)

3.4 Experimental Verifications and Discussions

(19)

3.5 Application of Notch S-N Equation in Multiaxial Fatigue Limit Analysis of Notched Components

118

(2)

3.6 Conclusions and Final Comments

120

(31)

References

122

(3)

Appendix A On Dealing with Nonproportional Loading Fatigue

125

(1)

Appendix B Multiaxial Fatigue Life Prediction Equation with Nonzero Mean Stress

125

(1)

Appendix C Experimental Investigations: The Inherent Notch S-N Equations Are Used to Perform the Fatigue Life Assessment of Notched Components

126

(14)

Appendix D Experimental Investigations: The Notch S-N Equation Is Verified to Be Naturally Existing by Some Fatigue Test Data of Various Notch Specimens from the Literature

140

(11)

Chapter 4 A Local Approach for Fracture Analysis of V-Notch Specimens Under Mode I Loading

151

(20)

4.1 Introduction

151

(1)

4.2 A Brief Description of Linear Elastic Stress Field and Stress Intensity of the V-Notches

152

(3)

4.3 A Local Stress Field Failure Model

155

(1)

4.4 Experimental Verifications

156

(7)

4.5 Conclusions and Final Comments

163

(8)

References

167

(3)

Appendix A The Practicability of Establishing the Unified Prediction Equation for a Low/Medium/High Cycle Fatigue of Metallic Materials

170

(1)

Chapter 5 A Local Stress Field Failure Model for Sharp Notches

171

(110)

5.1 Introduction

171

(3)

Part 1

174

(1)

5.2 A Brief Description of Local Stress Field Ahead of Rounded V-Notches

174

(3)

5.3 A Local Stress Field Failure Model

177

(1)

5.4 A Concept of the Stress Concentration Factor Eigenvalue k*

178

(5)

5.4.1 On the Existence of k* (or ρ*)

178

(5)

5.4.2 An Approach to Determining k*

183

(1)

5.5 Experimental Verifications

183

(16)

5.6 Conclusions of Part 1

199

(1)

Part 2

199

(1)

5.7 Effect of Notch Angles on k*

199

(5)

5.7.1 A Model of the Effect of Notch Angles on k*

201

(1)

5.7.2 Experimental Verifications

202

(2)

5.8 Effect of Notch Depth on K*

204

(6)

5.8.1 Notch Depth Model for TPB Notch Specimens and Experimental Verifications

204

(2)

5.8.2 Notch Depth Model for SEN Notch Specimens and Experimental Verifications

206

(1)

5.8.3 Notch Depth Model for DEN Notch Specimens and Experimental Verifications

206

(2)

5.8.4 Notch Depth Model for RNT Notch Specimens and Experimental Verifications

208

(2)

5.9 Effect of Different Materials on k*

210

(3)

5.10 Comments of Part 2

213

(1)

Part 3

214

(1)

5.11 An Empirical Equation for Predicting the Fracture Toughness Kk

214

(9)

5.12 Fracture Analysis of Center Notch Plates Made of Metal Materials

223

(6)

5.13 Concluding Remarks

229

(52)

References

229

(4)

Appendix A A Local Stress Field Failure Model of Sharp Notches Under III Loading

233

(18)

Appendix B Fatigue Limit Analysis of Notched Components

251

(12)

Appendix C A Local Approach for Fatigue Life Analysis of Notched Components

263

(18)

Chapter 6 An Empirical Fracture Equation of Mixed Mode Cracks

281

(26)

6.1 Introduction

281

(1)

6.2 An Empirical Fracture Equation of Mixed Mode Cracks

282

(4)

6.2.1 The Multiaxial Fatigue Limit Equation by Liu and Yan

282

(2)

6.2.2 An Empirical Fracture Equation of Mixed Mode Cracks

284

(2)

6.3 An Approach to Determine KIIC

286

(1)

6.4 Experimental Verifications

286

(13)

6.4.1 Experimental Verifications by the Disk Test

287

(4)

6.4.2 Experimental Verifications by the AS4P Test

291

(7)

6.4.3 Experimental Verifications by Circumferentially Notched Cylindrical Rods

298

(1)

6.5 Final Comments

299

(8)

References

300

(1)

Appendix A Experimental Investigations: The Empirical Failure Condition Is Well Suited for the Failure Analysis for Plain Materials

301

(3)

Appendix B Experimental Investigations: The Failure Condition Is Well Suited for the Failure Analysis for Cracked Specimens Made of Plastic Materials

304

(2)

Appendix C The Practicability of Establishing the Unified Prediction Equation for a Low/Medium/High Cycle Fatigue of Metallic Materials

306

(1)

Chapter 7 An Empirical Failure Equation to Assess Mixed-Mode Fracture of Notched Components

307

(24)

7.1 Introduction

307

(1)

7.2 A Brief Description of the Multiaxial Fatigue Life Equation

308

(2)

7.3 An Extension of the Multiaxial Fatigue Limit Equation to Mode I/III Rounded V-Notches

310

(2)

7.4 Experimental Verifications

312

(15)

7.5 Final Comments

327

(4)

References

328

(3)

Chapter 8 A New Type of S-N Equation and Its Application to Multiaxial Fatigue Life Prediction

331

(18)

8.1 Introduction

331

(1)

8.2 A Brief Description of a Multiaxial Fatigue Model

331

(2)

8.3 A New Type of S-N Equation

333

(2)

8.4 Experimental Verifications and Discussions

335

(11)

8.5 Concluding Remarks

346

(3)

References

346

(3)

Index

349

Yan Xiangqiao is currently Professor at Harbin Institute of Technology. His research interests include the fatigue and fracture of engineering materials and structures, and he has published more than 100 papers in international journals.

Püsilink: https://www.kriso.ee/db/9781003356721_pe.html

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