Experimental rotor dynamics research

The ARotor laboratory provides a great possibility for experimental research. The test facilities enable to study up to 25-ton rotors that can be measured and machined on a guideway with a length of over 10 meters. Lathes and additional custom build test benches are also available for experimental research.

Typically, the studies conducted by the machine design research group in the ARotor laboratory are based on the proof-of-concept. In the proof-of-concept type studies, novel claims, methods and algorithms are verified by experimental methods. Very often the test setups has been done in full-scale that eliminates the possible error that could occur with reduced size.

Currently, the main test bench in the laboratory has a full-sized paper machine roll. In this test bench, the dynamic behavior of the large rotors can be studied. In rotor dynamics research, typical targets for the measurement are the dynamic run-out of a rotor, accelerations in bearing housings and radial bearing forces. All of these can be measured in with the current equipment in the laboratory. For more specific research purposes, custom built test devices have been constructed, such as a device for adjustable foundation stiffness and a loading device.