chapter 1 Introduction -- chapter 2 Ultrasonic Fatigue Concepts -- chapter 3 Testing Machines and Their Performance -- chapter 4S-N Curve and Fatigue Strength -- chapter 5 Crack Growth and Threshold -- chapter 6 Frequency and Environmental Effects -- chapter 7 Microstructural Aspects and Damage to Materials in the Gigacycle Regime -- chapter Appendix 1 Stress Calibration -- chapter Appendix 2 Remarks on the Statistical Prediction -- chapter References -- chapter Listing of Materials Tested in Gigacycle Fatigue.