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Rotor blade vibration simulator of steam turbine with aliasing frequencies up to 25 Hz

Piechowski L., Rządkowski R., Troka P., Piechowski P., Szczepanik R.

Transactions of the Institute of Fluid-Flow Machinery

2016

nr 134

121--129

The tip-timing measurement of rotor blade vibration of a real turbine is very expensive. An electronic simulator of unshrouded steam turbine rotor blade vibrations for aliasing frequencies up to 25 Hz is presented in this paper. The results of the simulated blade vibrations were compared with ones carried out on a real steam turbine. The simulator can be also used to: calibrate the measurement channels, help in the designing and manufacturing new tip-timing systems, and check the reliability of other tip-timing systems.