Beam No | Mode No | fn [Hz] | Fit method | Res. ampl method | “3 dB” method | “2 dB” method | “1 dB” method |
7 | 1 | 75 | 0.152 | 0.108 | 0.149 | 0.138 | 0.058 |
7 | 2 | 460 | 0.143 | 0.209 | 0.146 | 0.145 | 0.154 |
7 | 3 | 1300 | 0.148 | 0.557 | 0.160 | 0.162 | 0.163 |
7 | 4 | 2400 | 0.064 | 0.291 | 0.060 | 0.058 | 0.046 |
8 | 1 | 84 | 0.206 | 0.181 | 0.231 | 0.208 | 0.212 |
8 | 2 | 520 | 0.290 | 0.389 | 0.296 | 0.288 | 0.287 |
8 | 3 | 1400 | 0.279 | 1.932 | 0.285 | 0.275 | 0.270 |
8 | 4 | 2500 | 0.092 | 0.545 | 0.116 | 0.099 | 0.091 |