Table 3.
Ultrasonic velocity analysis.
| material | time (μs) | thickness (mm) | experimental velocity (m s−1) | theoretical velocity (m s−1) |
|---|---|---|---|---|
| aluminium | 12.63 | 20.00 | 3167.60 | 3050.00 |
| 45 steel | 12.42 | 20.00 | 3220.00 | 3200.00 |
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