A Hybrid Method to Predict the Remaining Useful Life of Scroll Wheel of Control Rod Drive Mechanism

Table 1

The normalized damage characteristics of the scroll wheel.

Time (day)	Normalized damage characteristics
6	0
6.5	0.0030
7	0.0039
7.5	0.0050
8	0.0058
8.5	0.0077
9	0.0100
9.5	0.0120
10	0.0140
10.5	0.0179
11	0.0205
11.5	0.0249
12	0.0300
12.5	0.0370
13	0.0410
13.5	0.0460
14	0.0463
14.5	0.0510
15	0.0580
15.5	0.0677
16	0.0650
16.5	0.0730
17	0.0820
17.5	0.0970
18	0.1228
18.5	0.1160
19	0.1200
19.5	0.1450
20	0.1630
20.5	0.1880
21	0.2000
21.5	0.2300
22	0.2400
22.5	0.2700
23	0.3000
23.5	0.3480
24	0.3759
24.5	0.4057
25	0.4405
25.5	0.4775
26	0.4900
26.5	0.5169
27	0.5587
27.5	0.6031
28	0.6501
28.5	0.6765
29	0.6987
29.5	0.7516
30	0.8074
30.5	0.8663
31	0.9295
31.5	1