Research Article
A Novel Complementary Method for the Point-Scan Nondestructive Tests Based on Lamb Waves
Table 1
Material properties of PZT transducer.
| | Product name | APC 851 |
| | Geometry (mm) | = 6.6, = 0.24 | | Density (g/cm3) | 7.6 | | Electromechanical coupling factor | 0.71 | | Voltage constant (Vm/N) | 24.8 × 10−3 | | Charge constant (m/V) | 400 × 10−12 | | Relative dielectric constant | 1950 | | Frequency constant (Hz·m) | 2040 | | Elastic constant (GPa) | 63 |
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