Element size (mm) | 1st Frequency (Hz) | 2st Frequency (Hz) | 3st Frequency (Hz) |
300 | 3.3169 | 3.3265 | 5.1410 |
500 | 3.3666 | 3.3771 | 5.1918 |
800 | 3.3720 | 3.3824 | 5.1848 |