Intro; Preface; Contents; Brief Introduction; 1 Introduction; References; 2 Outline of Fatigue and Fracture Mechanics; 2.1 Basic Conception of Fatigue; 2.1.1 Definition of Fatigue and Its Damage Property; 2.1.2 Alternating Stress; 2.1.3 Curve S-N; 2.1.4 Equal-Life Curve; 2.1.5 Stress Fatigue and Strain Fatigue; 2.1.6 Linear Cumulative Damage Theory; 2.2 The Main Factors that Affect the Structural Fatigue Performance; 2.2.1 Effects of Load Spectrum; 2.2.2 Effects of Stress Concentration; 2.2.3 Effects of Size; 2.2.4 Effects of Surface Roughness and Residual Stress

2.3 Mechanism of Fatigue Failure, Crack Propagation, and Fracture Analysis of Metals2.3.1 Mechanism of Fatigue Failure; 2.3.2 Fatigue Crack Propagating Theory; 2.3.3 Fractographic Analysis; 2.4 Estimate Methods of Fatigue Life; 2.4.1 Nominal Stress Approach; 2.4.2 Local Stress-Strain Method; 2.4.3 Multiaxial Fatigue Theory; References; 3 Effect of Surface Quality of Open Holes on Fatigue Life; 3.1 Effect of the Surface Defects on Fatigue Life of Open Holes; 3.1.1 Scratch; 3.1.2 Cavity; 3.1.3 Inclusion; 3.2 Effect of Manufacturing Quality on Fatigue Performance of Open Holes

3.2.1 Surface Roughness3.2.2 Verticality; 3.2.3 Cylindricity; 3.2.4 Roundness; 3.2.5 Manufacturing Quality of Fasten Holes and Empirical Equation; 3.3 Effect of Drilling on Fatigue Performance of Open Holes; 3.3.1 Specimen Size and Loading; 3.3.2 Fatigue Test Results; References; 4 Anti-fatigue Strengthening Technology of Holes; 4.1 Effect of Cold Expansion on Fatigue Performance of Open Holes; 4.1.1 Direct Mandrel Expansion Process and Its Parameters; 4.1.2 Residual Stress Measurements; 4.1.2.1 Tangential Residual Stress Distribution

4.1.2.2 Tangential Residual Stress in Longitudinal and Transverse Distributions4.1.2.3 Layered Depth Distribution of Tangential Residual Stress; 4.1.3 Fatigue Test Results and Fracture Analysis; 4.1.4 FEM Analysis; 4.2 Effect of Impression on Fatigue Performance of Open Holes; 4.2.1 Impression Process; 4.2.2 Influence of Indenter Size on Residual Stress Distribution; 4.2.3 Influence of Different Factors on Residual Stress of Impression-Reinforced Holes; 4.2.3.1 Effect of Extrusion Amount on Residual Stress Distribution

4.2.3.2 Effect of Friction Between Indenter and Specimen on Residual Stress Distribution4.2.3.3 Influence of Loading Sequence on Residual Stress Distribution; 4.2.4 Fatigue Test of Three-Hole Sample Impressed; 4.3 Effect of Hammering on Fatigue Performance of Open Hole; 4.3.1 Hammering and Fatigue Testing; 4.3.2 Finite Element Analysis of Hammering; 4.3.3 Fracture Analysis; References; 5 Shot Peening Strengthening Technology; 5.1 Mechanism of Shot Peening and Status of Art; 5.2 Effect of Shot Materials on Fatigue Performance; 5.2.1 Fatigue Test; 5.2.2 Comparative Analysis of Fatigue Test Data