Table 2.
Summary of natural frequencies for different cantilever configurations measured with the Doppler vibrometry system and the PRISM holography system.
| Cantilever Configurations | Frequency | Natural Frequencies, Hz | ||||
|---|---|---|---|---|---|---|
| Measured with Doppler Vibrometry System | Measured with PRISM Holography System | |||||
| Support Location | Support Location | |||||
| Unsupported | x/l ≈ 0.78 | x/l ≈ 0.87 | Unsupported | x/l ≈ 0.87 | ||
| Constant cross section | ω1 | 75 | - | 46 | 77 | - |
| ω2 | 470 | 469 | 410 | 480 | 465 | |
| ω3 | - | - | - | 1335 | 1186 | |
| Optimal | ω1 | 58 | - | - | 58 | - |
| ω2 | 396 | 395 | 350 | 402 | 372 | |
| ω3 | 1336 | 1249 | 1325 | 1368 | 1341, 1991 | |