Damage Identification of Rotating Blades Based on Fuzzy C-Means and Frequency Response Function Curvature Methods

Table 2

Natural frequencies (Hz) of beams with and without damages obtained by different methods.

	Normal beam			Damaged beam
	Present	COMSOL	Experiment	Present	COMSOL	Experiment
Mode 1	16.45	16.56	15.63	16.44	16.48	15.63
Mode 2	103.08	103.79	101.60	103.07	102.89	101.30
Mode 3	288.57	290.57	285.90	288.59	290.78	282.90