Table 4 Type II railway track ultrasound image test results
Defect serial number | Defects number | Missed detection rate \(P_{{3}}\)(%) | Misjudgment rate \(P_{{2}}\)(%) | Accuracy rate \(P_{{1}}\)(%) |
|---|---|---|---|---|
1 | 23 | 0 | 0 | 1 |
2 | 6 | 0 | 0 | 1 |
3 | 29 | 3.45 | 0 | 96.55 |
4 | 13 | 0 | 0 | 1 |
5 | 23 | 0 | 4.35 | 96.65 |
6 | 6 | 0 | 0 | 1 |
7 | 34 | 0 | 0 | 1 |
8 | 18 | 0 | 5.56 | 94.44 |
9 | 4 | 0 | 25.00 | 75.00 |
10 | 21 | 0 | 0 | 1 |
11 | 14 | 7.12 | 0 | 92.88 |
12 | 25 | 0 | 0 | 1 |
Total | 216 | 0.93 | 1.39 | 97.69 |