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

Table 2

Amplitude at the frequencies of interest for each gear condition without bearing defect and VFD set to 5 Hz.

Condition	Amplitude (×10^−3 m/s^2)
	Healthy	1.160	1.291	1.223	1.141	1.197	1.226
25%	1.193	1.372	1.805	1.252	1.228	1.198
50%	1.146	1.454	2.694	1.218	1.265	1.284
75%	1.131	2.737	1.588	1.387	1.424	1.530