مکانیک و سازوکارهای شکست: مقدمه‌ای بر آن

This text is for readers who want an introductory overview on the mechanical and material factors of fracture in design analysis, material evaluation, and failure prevention. Both fundamental and practical concepts of fracture are described in terms of stress analysis and the mechanical behavior of materials. The metallurgical aspects of deformation and fracture in metals are also discussed. This book can serve as a desktop reference book, or a self-study book, for engineering students and practicing engineers with some, or without, prior training in solid mechanics and/or mechanical metallurgy. The focus is on how machine (or structural) parts fail, why one piece fails in a certain way and another piece fails differently; and engineering tools for analyzing and, ultimately, preventing failure. Metals occupy the main part of the book, but nonmetallic materials such as ceramics, plastics, and fiber reinforced polymer matrix composites are also included. The first two chapters of this book can be considered as the fundamentals of stress analysis and mechanical behavior of materials. Chapter 1 serves as a crash course (or a refresh course) in strength of materials that prepares the reader with the basic analytical tools for the rest of the book. Topics include: fracture mechanics, fatigue, and failures associated with high-temperature creep, stress-corrosion, corrosion-fatigue, and hydrogen-embrittlement. Numerous examples are given through out this book to illustrate the elastic and plastic behavior of materials at a stress raiser, and how the static, fatigue, and residual strengths of a machine part might have been affected by it. Mechanics and Mechanisms of Fracture:An Introduction......Page 2 Contents......Page 4 Preface......Page 6 CHAPTER 1 - Solid Mechanics of Homogeneous Materials......Page 9 CHAPTER 2 - Deformation and Fracture Mechanisms and Static Strength of Metals ......Page 55 CHAPTER 3 - Fatigue Strength of Metals......Page 129 CHAPTER 4 - Static and Dynamic Fracture Toughness of Metals......Page 176 CHAPTER 5 - Damage Tolerance of Metals......Page 223 CHAPTER 6 - Nonlinear Fracture Mechanics......Page 289 CHAPTER 7 - Mechanical Behavior of Nonmetallic Materials......Page 305 CHAPTER 8 - Mechanics of Fiber-Reinforced Composites ......Page 327 APPENDIX 1 Lattice Structure and Deformation Mechanisms in Metallic Single Crystals......Page 364 APPENDIX 2 - Close-Form Representation of Tangential Stress Distribution at Circular and Elliptical Holes......Page 381 APPENDIX 3 - Nonarbitrary Crack Size Concept for Fatigue Crack Initiation......Page 387 APPENDIX 4 - Fatigue Spectrum Editing......Page 391 APPENDIX 5 - Stress Severity Factor......Page 399 APPENDIX 6 - Specimen Orientation and Fracture Plane Identification......Page 403 APPENDIX 7 - Mechanical Properties Data for Selected Aluminum Alloys......Page 405 APPENDIX 8 - Mechanical Properties Data for Selected Titanium Alloys......Page 419 APPENDIX 9 - Mechanical Properties Data for Selected Titanium Aluminides......Page 423 APPENDIX 10 - Mechanical Properties Data for Selected Steels......Page 431 APPENDIX 11 - Conversion Table......Page 437 APPENDIX 12 - Glossary of Terms,Symbols, and Abbreviations......Page 439 Index......Page 451 Provides an overview on the mechanical and material factors of fracture in design analysis, material evaluation, and failure prevention. Both fundamental and practical concepts of fracture are described in terms of stress analysis and the mechanical behaviour of materials. The metallurgical aspects of deformation and fracture in metals are also discussed.