Rolling Element Bearing Performance Degradation Assessment Using Variational Mode Decomposition and Gath-Geva Clustering Time Series Segmentation

Table 2

Datasets of PHM 2012 Prognostic Challenge.

Datasets	Operating conditions
	Conditions 1; (1800 rpm and 4000 N)	Conditions 1; (1650 rpm and 4200 N)	Conditions 1; (1500 rpm and 5000 N)
Learning set	Bearing1_1	Bearing2_1	Bearing3_1
	Bearing1_2	Bearing2_2	Bearing3_2
Test set	Bearing1_3	Bearing2_3	Bearing3_3
	Bearing1_4	Bearing2_4
	Bearing1_5	Bearing2_5
	Bearing1_6	Bearing2_6
	Bearing1_7	Bearing2_7