Table A2
Flexural wavelengths in longitudinal and radial directions for a back plate made in maple (EL = 9028 MPa, ER = 1679 MPa). The value of 1000 Hz is considered as a boundary frequency for material identification.
Eigenfrequency (Hz) | Longitudinal λ (cm) | Radial λ (cm) |
---|---|---|
97 | 58.12 | 14.38 |
164 | 45.07 | 11.14 |
274 | 35.33 | 8.74 |
294 | 34.01 | 8.41 |
340 | 31.92 | 7.90 |
420 | 28.90 | 7.15 |
1000 | 18.00 | 4.46 |
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