Abstract
The generalized dispersion character equations of guided waves in the piezoelectric coating composite structure with rigid, slip and weak interfaces are derived by combining the propagation model of guided waves in layered piezoelectric composite structure and the interface spring model. Numerical computations are made for dispersion characteristics of guided waves in PZNT, a Pb(Zr, Ti)O3 based piezoelectric, coating composite structure with different interface conditions. The influence of the interfacial property on the phase velocity of the lower order guided wave modes is studied. Numerical analysis shows that it is very vital to select the corresponding ultrasonic mode and frequency in order to evaluate the interface property. The primary experimental results confirm the assumption of the interface property. The theory is promising to be explored to characterize the interfacial property of the piezoelectric coating composite structure.
| Original language | English |
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| Pages (from-to) | 363-367 |
| Number of pages | 5 |
| Journal | Shengxue Xuebao/Acta Acustica |
| Volume | 28 |
| Issue number | 4 |
| State | Published - Jul 2003 |