Bearing Fault Diagnosis Based on Multilayer Domain Adaptation

Figure 6

Bearing vibration signals. (a) NO. (b) IF03. (c) OF03. (d) BF03. (e) IB. (f) IO. (g) OB. (h) IOB.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)