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Chinese Journal of Mechanical Engineering

Table 2 Data sets of different tightness of fastener bolts

From: Regression Method for Rail Fastener Tightness Based on Center-Line Projection Distance Feature and Neural Network

Label

Angle of tightening

Label

Angle of Loosing

1

0°

7’

270°

2

45°

6’

225°

3

90°

5’

180°

4

135°

4’

135°

5

180°

3’

90°

6

225°

2’

45°

7

270°

1’

0°

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