Design and manufacturing of rotating bending fatigue test machine

Fatigue strength is an important criterion for all materials used. In the past years, it has been observed that materials cannot carry the loads they carry statically under service conditions. This situation is explained by the phenomenon of "cyclic loading" in the literature. Cyclic loadings cause damage by creating a crack in the surface of the material or by exploiting an existing discontinuity. There are many test methods and devices for determining fatigue strength. All of these are based on the repetition of a certain load in different ways. Among the tests applied, the least costly and simplest method is the rotating bending fatigue test. In this study, a rotating bending fatigue test device was designed and manufactured. Fatigue life of AA 6063 aluminum alloys, which were prepared according to the fatigue test sample standards and with specific properties, were subjected to fatigue test and calculated.