Table 5 Non-destructive detect recognition parameters of sample 6#
Character point number | Character point 1 | Character point 2 | Character point 2 |
|---|---|---|---|
Propagation time (us) | 865 | 1210 | 1360 |
Time difference (us) | 345 | 150 | |
Wave velocity (m/s) | 1885 | 4356 | |
Length (mm) | 325 | 326 | |
Actual length (mm) | 330 | 330 | |
Error rate (%) | 1.5 | 1.0 | |