| Preface | p. x |
| Introduction and Background | p. 1 |
| Introduction | p. 3 |
| Historical background | p. 3 |
| What is High Cycle Fatigue? | p. 4 |
| HCF design considerations | p. 5 |
| HCF design requirements | p. 9 |
| Root causes of HCF | p. 11 |
| Field failures | p. 13 |
| Damage tolerance | p. 16 |
| Application to HCF | p. 20 |
| Current status | p. 23 |
| Field experience | p. 25 |
| Characterizing Fatigue Limits | p. 27 |
| Constant life diagrams | p. 27 |
| Gigacycle fatigue | p. 27 |
| Characterizing fatigue cycles | p. 34 |
| Fatigue limit stresses | p. 35 |
| Equations for constant life diagrams | p. 41 |
| Haigh diagram at elevated temperature | p. 47 |
| Role of mean stress in constant life diagrams | p. 51 |
| Jasper equation | p. 56 |
| Observations on step tests at negative R | p. 65 |
| Accelerated Test Techniques | p. 70 |
| Historical background | p. 70 |
| Coaxing | p. 70 |
| Early test methods | p. 72 |
| Step test procedures | p. 75 |
| Statistical considerations | p. 76 |
| Influence of number of steps | p. 78 |
| Validation of the step-test procedure | p. 80 |
| Observations from the last loading block | p. 85 |
| Comments on step testing | p. 89 |
| Staircase testing | p. 90 |
| Probability plots | p. 91 |
| Statistical analysis | p. 95 |
| Dixon and Mood method | p. 95 |
| Numerical simulations | p. 99 |
| Sample size considerations | p. 104 |
| Construction of an "artificial" staircase | p. 105 |
| Other methods | p. 106 |
| Random fatigue limit (RFL) model | p. 109 |
| Data analysis | p. 113 |
| Summary comments on FLS statistics | p. 120 |
| Constant stress tests | p. 123 |
| Run-outs and maximum likelihood (ML) methods | p. 126 |
| Resonance testing techniques | p. 129 |
| Frequency effects | p. 134 |
| Effects of Damage on HCF Properties | p. 143 |
| LCF-HCF Interactions | p. 145 |
| Small cracks and the Kitagawa diagram | p. 145 |
| Behavior of notched specimens | p. 149 |
| Effects of LCF loading on HCF limit stress | p. 153 |
| Studies of naturally initiated LCF cracks | p. 170 |
| Crack-propagation thresholds | p. 170 |
| Overloads and load-history effects | p. 172 |
| An overload model | p. 180 |
| Analysis using an overload model | p. 182 |
| Examples of LCF-HCF interactions | p. 183 |
| Design considerations | p. 193 |
| LCF-HCF nomenclature | p. 196 |
| Example of anomalous behavior | p. 197 |
| Another example of anomalous behavior | p. 200 |
| Combined cycle fatigue case studies | p. 204 |
| Notch Fatigue | p. 213 |
| Introduction | p. 213 |
| Stress concentration factor | p. 213 |
| What is k[subscript t]? | p. 215 |
| Fatigue notch factor | p. 216 |
| k[subscript f] versus k[subscript t] relations | p. 217 |
| Equations for k[subscript f] | p. 218 |
| Fracture mechanics approaches for sharp notches | p. 222 |
| Cracks versus notches | p. 225 |
| Mean stress considerations | p. 228 |
| Plasticity considerations | p. 232 |
| Negative mean stresses | p. 238 |
| Fatigue limit strength of notched components | p. 239 |
| Non-damaging notches | p. 241 |
| Size effects and stress gradients | p. 242 |
| Critical distance approaches | p. 242 |
| Analysis methods | p. 246 |
| Effects of defects on fatigue strength | p. 251 |
| Notch fatigue at elevated temperature | p. 254 |
| Fretting Fatigue | p. 261 |
| Introduction | p. 261 |
| Observations of fretting fatigue | p. 263 |
| Representing total contact loads, Q and P | p. 267 |
| Load and stress distributions | p. 271 |
| Effects of local and bulk stresses on stress intensity | p. 272 |
| Mechanisms of fretting fatigue | p. 277 |
| Mechanics of fretting fatigue | p. 279 |
| Stress analysis of contact regions | p. 281 |
| Multiple crack considerations | p. 283 |
| Analytical solutions | p. 284 |
| Role of slip amplitude | p. 292 |
| Stress-at-a-point approaches | p. 295 |
| Fracture mechanics approaches | p. 300 |
| A combined stress and K approach | p. 306 |
| Comparison of fretting-fatigue fixtures | p. 309 |
| Role of coefficient of friction | p. 312 |
| Average versus local coefficient of friction | p. 317 |
| Summary comments | p. 317 |
| Foreign Object Damage | p. 322 |
| Introduction | p. 322 |
| Field experience and observations | p. 324 |
| Repair by blending | p. 325 |
| Background | p. 326 |
| FOD data mining and investigation | p. 326 |
| Definition of FOD | p. 328 |
| Types of damage | p. 329 |
| Scope of the FOD problem | p. 336 |
| Laboratory simulation methods | p. 338 |
| Solenoid gun | p. 338 |
| Pendulum | p. 338 |
| Quasi-static | p. 339 |
| Simulations using a leading edge geometry | p. 339 |
| Role of residual stresses | p. 344 |
| Energy considerations | p. 345 |
| Fatigue limit strength | p. 347 |
| Simulations using a flat plate | p. 352 |
| Other laboratory FOD simulations | p. 359 |
| Analytical modeling of FOD | p. 368 |
| Perturbation study | p. 371 |
| Summary comments | p. 374 |
| Applications | p. 377 |
| HCF Design Considerations | p. 379 |
| Factors of safety | p. 379 |
| Modeling errors | p. 381 |
| Material variability | p. 384 |
| Fracture mechanics considerations | p. 386 |
| Effects of defects | p. 390 |
| Application to LCF-HCF | p. 396 |
| Damage tolerance for HCF | p. 398 |
| Material allowables | p. 400 |
| Threshold concept for HCF | p. 403 |
| Representing fatigue limit data | p. 405 |
| Threshold considerations | p. 408 |
| Experimental threshold measurements | p. 409 |
| "Jump-in" method | p. 409 |
| Mechanisms in threshold testing | p. 412 |
| Load-history effects | p. 414 |
| Compression precracking | p. 416 |
| Load-shed rates | p. 416 |
| Crack closure | p. 418 |
| K[subscript max]-[Delta]K concept | p. 419 |
| Crack propagation stress intensity factor | p. 422 |
| An engineering approach to thresholds | p. 423 |
| Observations from field failures | p. 424 |
| Probabilistic approach to HCF/FOD design | p. 425 |
| Residual stresses in HCF design | p. 430 |
| Application to notches | p. 436 |
| Shot peening | p. 441 |
| Deep residual stresses | p. 447 |
| Application to an airfoil geometry | p. 449 |
| Crack arrest | p. 458 |
| Crack growth retardation | p. 461 |
| A numerical example | p. 462 |
| Autofrettage | p. 464 |
| Appendices | |
| Early Railroad Accidents and the Origins of Research on Fatigue of Metals | p. 472 |
| Final Report for the USAF High Cycle Fatigue Program | p. 493 |
| HCF in ENSIP | p. 499 |
| Evaluation of the Staircase Test Method using Numerical Simulation | p. 517 |
| Estimation of HCF Threshold Stress Levels in Notched Components | p. 531 |
| Analytical Modeling of Contact Stresses | p. 542 |
| Experimental and Analytical Simulation of FOD | p. 558 |
| FOD in JSSG | p. 600 |
| Computation of High Cycle Fatigue Design Limits under Combined High and Low Cycle Fatigue | p. 617 |
| Index | p. 639 |
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