Experimental validation of the blade excitation in a shaft vibration signals

Abstract

Explanation of main principle of rotor excitation by rotating blades is described in this paper. The described theory is experimentally validated using a machinery fault simulator. The experiment was based on the excitation of the forced blade vibrations by the piezo elements installed on the bladed disc, which was mounted on the simulator shaft. Excitation of piezo elements was set in an appropriate form to be able to clarify the principle and validate theory which was described in this paper.