Research Article

Mode Selection Model for Rail Crack Detection Based on Ultrasonic Guided Waves

Table 8

Nondispersion characteristics W3.

Frequency (Hz)Mode no.W3

6000071
6000080.93
5000070.72
5000080.70
6000090.61
4000070.59
60000100.57
60000110.57
6000030.54
5000090.53
60,00040.53
50,000110.52
60,00010.52
60,00020.51
60,000220.51
40,00080.50
60,00060.50
40,00090.50
50,00030.49
50,00040.47