V.L.Karlash Methods for determining of the coupling and energy loss coefficients at vibration of piezoceramic resonators |
Acoustic bulletin, Vol. 15 ¹ 4, (2012) |
| On an example of well-known problem on radial vibration of thin circular piezoceramic plate with unbroken electrodes, the amplitude-frequency and phase-frequency relations near the resonant and anti-resonant frequencies of several lowest modes are investigated. The principles of a refined computational-experimental methodic for determining of planar EMCF, as well as elastic and piezoelectric losses tangents are described. Amplitudes and phases of full admittance components are computed. The obtained results are in good agreement with experimental data. |
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KEY WORDS: piezoceramic plate, the electromechanic coupling coefficient, elastic losses tangent, piezoelectric losses tangent, vibration modes |
| TEXT LANGUAGE: Ukrainian |