Smith Fracture Mechanics

Current Status, Future Prospects
1. Auflage 2013
ISBN: 978-1-4831-5891-4
Verlag: Elsevier Science & Techn.
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 254 Seiten, Web PDF

Fracture Mechanics: Current Status, Future Prospects presents the remarkable increase in the number of tools available for engineers to deal with cracked structures in a quantitative manner. This book discusses the acceptance of the stress intensity factor as a distinguishing similitude parameter that properly accounts for the applied mechanics near crack tips in several cases of practical interest. Organized into nine chapters, this book begins with an overview of the competing micromechanics of fracture, including cleavage, rupture, ductile fracture, and intergranular creep fracture. This text then reviews the characterization of crack tip stress fields by the stress intensity factor. Other chapters consider the analysis of fatigue cracking in a large generator rotor. This book discusses as well the use of Green's functions in the determination of stress intensity factors. The final chapter deals with the size effect with regard to extension of sharp cracks in technological materials. This book is a valuable resource for environmental and mechanical engineers.

Autoren/Hrsg.

Smith, R. A.

Inhaltsverzeichnis

1;Front Cover
;1
2;Fracture Mechanics: Current Status, Future Prospects;4
3;Copyright Page;5
4;Table of Contents;6
5;INTRODUCTION;8
6;CHAPTER 1. MICROMECHANISMS OF FRACTURE IN STATIC AND CYCLIC FAILURE;10
6.1;Abstract;10
6.2;1. Introduction;10
6.3;2. Micromechanisms of Fracture;12
6.4;3. Fracture Mechanism Maps;18
6.5;4. Maps for Metals and Ceramics;22
6.6;5. Mechanisms of Fracture and Order of Magnitude of Kc and Gc;27
6.7;6. Mechanisms of Fracture and Fatigue Crack Growth;29
6.8;7. Summary;33
6.9;Acknowledgements;33
6.10;References;34
7;CHAPTER 2.
THEORETICAL BACKGROUND TO ELASTIC FRACTURE MECHANICS;38
7.1;Summary;38
7.2;1. Introduction;38
7.3;2. Modes of Crack Surface Displacement;39
7.4;3. Stress Intensity Factors;40
7.5;4. Effect of Yielding;44
7.6;5. Measuring Fracture Toughness;46
7.7;6. Fatigue Crack Growth;49
7.8;7. Short Crack Limitations;65
7.9;8. Combined Mode Behaviour;69
7.10;9. Conclusions;70
7.11;Acknowledgements;70
7.12;Notation;70
7.13;APPENDIX;72
7.14;REFERENCES;75
8;CHAPTER 3.
APPLICATION OF FRACTURE MECHANICS TO INDUSTRIAL PROBLEMS;78
8.1;Summary;78
8.2;1) INTRODUCTION;79
8.3;2) FATIGUE CRACKING IN A LARGE GENERATOR ROTOR;79
8.4;3) CREEP CRACKING IN CrMoV PIPEWORK WELDS;87
8.5;4) STRESS-CORROSION CRACKING IN STEAM TURBINE DISCS;92
8.6;5) CONCLUDING REMARKS;96
8.7;6) ACKNOWLEDGEMENT;98
8.8;7) REFERENCES;98
9;CHAPTER 4.
GREEN'S FUNCTIONS IN FRACTURE MECHANICS;100
9.1;Summary;100
9.2;1. Introduction;100
9.3;2. Basic principles of Green's functions;101
9.4;3. Stress intensity factors as Green's functions;102
9.5;4. Systematic use of Green's functions;104
9.6;5. Available Green's functions;108
9.7;6. Simple methods expressed as Green's functions;108
9.8;7. Applications of Green's functions;119
9.9;8. Conclusions;128
9.10;References;131
10;CHAPTER 5.
VARIABLE AMPLITUDE FATIGUE OF WELDED STRUCTURES;134
10.1;INTRODUCTION;134
10.2;ANALYSIS OF VARIABLE AMPLITUDE FATIGUE;136
10.3;CRACK SHAPE PROBLEMS;146
10.4;K HISTORY;149
10.5;CONCLUSIONS;151
10.6;ACKNOWLEDGEMENTS;154
10.7;NOMENCLATURE;154
10.8;REFERENCES;155
11;CHAPTER 6.
PROBABILISTIC FRACTURE MECHANICS;158
11.1;Abstract;158
11.2;1. INTRODUCTION;159
11.3;2. GENERAL PHYSICAL ASPECTS;160
11.4;3. GENERAL MATHEMATICAL FORMULATION;162
11.5;4. THE DISTRIBUTION FUNCTIONS;170
11.6;5. APPLICATIONS;180
11.7;6. CONCLUSIONS;185
11.8;References;186
12;CHAPTER 7.
ELEVATED TEMPERATURE FRACTURE MECHANICS;188
12.1;SUMMARY;188
12.2;INTRODUCTION;188
12.3;CRACK CHARACTERISATI0N;189
12.4;CREEP CRACK GROWTH;193
12.5;FATIGUE AND CREEP-FATIGUE CRACK GROWTH;201
12.6;CONCLUDING REMARKS;213
12.7;REFERENCES;215
12.8;APPENDIX: CAVITY LINKAGE BY A CRACK DISPLACEMENT FIELD;217
13;CHAPTER 8.
FRACTURE MECHANISMS IN FIBROUS COMPOSITES;220
13.1;Abstract;220
13.2;1. Introduction;220
13.3;2. Models of Fracture;222
13.4;3. Statistical Analysis of Fracture;225
13.5;4. Estimation of Fracture Energy;228
13.6;5. Energies of Crack Initiation and Crack Propagation;239
13.7;6. Conclusions;239
13.8;References;242
13.9;Acknowledgements;242
14;CHAPTER 9.
FRACTURE CRITERIA IN ELASTIC AND ELASTIC/PLASTIC SOLIDS;244
14.1;SUMMARY;244
14.2;INTRODUCTION;244
14.3;PLASTIC ZONE SIZE CORRECTION;245
14.4;THE PLANE STRAIN/PLANE STRESS TRANSITION;245
14.5;INITIATION AND PROPAGATION;246
14.6;THE J INTEGRAL CRITERION FOR FRACTURE;246
14.7;THE CRACK OPENING DISPLACEMENT;248
14.8;SLOW CRACK GROWTH;253
14.9;THE PRESENT POSITION;254
14.10;REFERENCES;255