Torsional and Rotational Vibration
Rotating machines and engines are sources of rotational and torsional vibration. Rotational vibration is a result of the change in shaft speed during one revolution and torsional vibration is due to angular twist in the shaft or drive train which may cause fatigue.
Modal Analysis
Modal Analysis is needed in every modern construction. The measurement of system parameters, called modal parameters, are essential to predict the behavior of a structure.
Order Tracking
Rotating machines under operational conditions require additional analysis such as order tracking. Compared to normal FFT the spectrum is based to orders instead of frequency (time). The orders describe the fundamental or a multiple of the actual rotation speed [Hz]. With this method you can separate frequency components which are related to engine speed and that are related to structure.
DEWETRON provides a powerful and very easy to use order tracking module for fast and efficient results. The data and the rpm information is recorded simultaneously in time domain and re-sampled in the order tracking module. Therefore we can show narrow band FFT, waterfall spectra, and still keep all other convenient
functions in time domain.
