On the Fatigue at High Frequency—Part II: Application to Some Materials

Abstract

This work deals with the experimental study of the so-called “ultrasonic fatigue” or fatigue at very high frequency (some kHz). After describing experimental facilities such as specimen shape, testing machine and measured parameters, we use the numerical method developed in Part I of this study to calculate thermo-mechanical fields in cracked and uncracked specimens. Prediction of S-N curves and thresholds for some different materials are also presented and discussed using mechanical fields obtained numerically.