A New Intelligent Fault Diagnosis Method of Rotating Machinery under Varying-Speed Conditions Using Infrared Thermography

Figure 9

The waveforms of rotating machinery under varying-speed conditions: (a) ball fault. (b) Ball fault with unbalance fault. (c) Combination bearing fault. (d) Combination bearing fault with unbalance fault. (e) Inner race fault. (f) Inner race fault with unbalance fault. (g) Normal. (h) Unbalance fault. (i) Outer race fault. (j) Outer race fault with unbalance fault (Figure 9 is reproduced from the study by Li et al. (2018), under the Creative Commons Attribution License/public domain).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)