Research Article
Viscoelastic Characterization of Long-Eared Owl Flight Feather Shaft and the Damping Ability Analysis
Table 1
Fitting parameters based on the viscoelastic model from tensile tests for the long-eared owl, pigeon, and golden eagle flight feather shafts.
| Sample | Cross-sectional area (mm2) | Gauge length (mm) | Elastic modulus (MPa) | Elastic modulus (MPa) | Coefficient of viscosity (MPa·s) |
| owl1 | 1.432 | 38.94 | 8210 | 625 | 1620290 | owl2 | 1.474 | 34.28 | 8989 | 554 | 1684931 | owl3 | 1.279 | 29.54 | 8318 | 896 | 1966866 | owl4 | 1.384 | 38.40 | 8760 | 860 | 1747912 | owl5 | 1.230 | 34.16 | 9930 | 673 | 1510543 | pigeon1 | 0.280 | 19.84 | 10087 | 2411 | 597359 | pigeon2 | 0.324 | 22.98 | 9590 | 2314 | 981513 | pigeon3 | 0.330 | 21.32 | 11103 | 3851 | 836727 | pigeon4 | 0.282 | 21.08 | 10201 | 3373 | 680685 | pigeon5 | 0.322 | 23.46 | 10404 | 2296 | 896814 | eagle1 | 1.197 | 39.48 | 7023 | 1333 | 1047637 | eagle2 | 1.784 | 42.14 | 6674 | 1073 | 1107921 | eagle3 | 1.710 | 43.48 | 7255 | 1197 | 1265107 | eagle4 | 1.624 | 37.86 | 8396 | 1455 | 938756 | eagle5 | 1.242 | 38.97 | 7016 | 1515 | 1141217 |
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