Multiple-Fault Detection Methodology Based on Vibration and Current Analysis Applied to Bearings in Induction Motors and Gearboxes on the Kinematic Chain

Table 4

Amplitude at the frequencies of interest for each gear condition without bearing defect and VFD set to 15 Hz.

Condition	Amplitude (×10^−3 m/s^2)
	Healthy	3.979	2.095	6.050	1.182	1.144	1.305
25%	15.96	7.438	6.821	1.322	1.178	1.363
50%	37.75	33.31	28.46	1.347	1.405	1.347
75%	42.29	34.48	30.09	1.461	1.322	1.345