Abstract
Nowadays there are several fatigue testing techniques operating in a frequency range from 2Hz up to 20kHz. A lot of effort is put into the understanding of very-high-cycle fatigue failures. A new testing technique, which is capable of operating at 834Hz located in between conventional testing machines and ultrasonic testing machines, is presented. An analytic approach, which was extended by FEA simulations to design the final setup is shown. The actual setup provides resonant frequencies at min. 732Hz, max. 1052Hz (analytic), 780Hz (FEA) and at 834Hz (experimental). Additional to that, the experimental’s damping factor (D=0.013) is defined. It was shown, that depending on the level of acceleration, a certain load (up to 689MPa) at the specimen’s cross section could be applied. Furthermore the tests showed a linear behaviour between load level and amount of acceleration.
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