Untersuchungen zum Mindestversuchsaufwand bei Lebensdaueruntersuchungen an einem Wälzgetriebe

Investigations Concerning the Minimal Experimental Expenditures for Fatigue Tests on Wheels for Friction Drives Results of fatigue tests on wheels for friction drives show always great scatter. The reliable experimental evaluation of the interesting scatterregions (scatter at constant stress in the range of finite life or the width of the range of transition) demands a great number of samples. In practice minimal experimental costs are aimed at and therefore the general possibilities of lowering the necessary number of samples are discussed on the example of a friction drive. The reduction of the numbers of samples, levels of load and the limiting value of stress cycles endured are especially investigated in the range of transition. Considerations concerning the reduction of the levels of load to minimal two lead to a method of testing known as ?boundary technique”? from the literature. Some remarks are made to the statistical background of this method.