Bearing Fault Diagnosis Based on Multilayer Domain Adaptation

Table 2

Description of 14 health conditions with both single and compound faults.

Bearing fault pattern	Diameters (mm)	Training samples	Testing samples	Label	Abbreviation
NO	—	320	160	0	NO
IF	0.2	320	160	1	IF02
	0.3	320	160	2	IF03
	0.4	320	160	3	IF04
OF	0.2	320	160	4	OF02
	0.3	320	160	5	OF03
	0.4	320	160	6	OF04
BF	0.2	320	160	7	BF02
	0.3	320	160	8	BF03
	0.4	320	160	9	BF04
IB	0.2	320	160	10	IB
IO	0.2	320	160	11	IO
OB	0.2	320	160	12	OB
IOB	0.2	320	160	13	IOB