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In this paper, the vibration behavior of a component of an axial flux motor is to be measured. The results obtained from this are to serve as simulation validation for subsequent work to be able to simulate the dynamic behavior of the component with regards to fatigue strength. To evaluate the data, a MATLAB script is developed that uses the Fourier transform to visualize the natural frequencies of the component by means of a representation in the frequency domain and can calculate the transfer function of the measured component by dividing the determined power spectra. A numerical simulation of a two-mass oscillator is used to prove the qualitative accuracy of the MATLAB script. The data from a single series of measurements are analyzed and it is shown that the strong damping of the measurement setup has a strong influence on the data and therefore no causal relationship between the input and output signal can be proven.
This paper explores a new principle for counter jet milling, whereby material is fed precisely guided into the free jet of Laval nozzles. By developing this concept, elaborating a modular prototype, and using rapid prototyping, calcium carbonate's feeding and milling behaviour in a multiphase flow was analysed under real conditions. Through experimental studies, the advantages of the next-generation system compared to classical feeding utilising a dosing screw were proven to be considerably more efficient. In addition, it was possible to determine actual firing zones using delamination tests performed on the MultiNo¨ 1050 counter jet mill manufactured by Aufbereitungstechnologie Noll GmbH, Bobingen, which represents a key basis for future optimisations and studies relating to large-scale industrial grinding processes.