Research Article
Variable Aperture Method of Ultrasonic Annular Array for the Detection of Addictive Manufacturing Titanium Alloy
Table 1
Simulation parameters of ultrasonic annular array.
| | No. | Element pitch (mm) | Focusing depth (mm) | Resolution (mm) | Focusing method |
| | 1 | 0.65 | 20-120 | 0.1 | Fixed aperture (16) | | 2 | 0.65 | 20-120 | 0.1 | Fixed (~4.4) | | 3 | 0.65 | 20-120 | 0.1 | Fixed (~0.5) |
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