Abstract
Transverse piezoelectric (TP) mode 1-3 tubular piezocomposites have been developed recently for low frequency ultrasonic transducer applications. The new piezocomposites made of piezoceramic tubes embedded in a polymer matrix has many unique features, such as increasing the tunability on acoustic impedance, enhancing the effective piezoelectric responses and improving the electrical impedance matching with the driving circuit. This paper theoretically described the surface displacement profile of 1-3 tubular piezocomposites under an uniaxial stress. The effective piezoelectric coefficients of 1-3 tubular piezocomposites have been derived in terms of the tube volume fraction, tube size and the elastic constants of matrix polymer. The theoretical analysis and experimental results indicate that the elastic parameters of polymer matrix have significant effects on the performance of 1-3 tubular piezocomposites. By optimizing the structure of the composite and elastic properties of the polymer matrix, the 1-3 tubular piezocomposite has a exceptionally large effective piezoelectric coefficient, d33, and less undesired resonance modes. A low electrical impedance and large effective piezoelectric coefficients suggest that the TP mode 1-3 tubular piezocomposites are superior to conventional 1-3 rod piezocomposites in low frequency ultrasonic applications.
| Original language | English (US) |
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| Pages | 746-749 |
| Number of pages | 4 |
| State | Published - 1994 |
| Event | Proceedings of the 1994 9th IEEE International Symposium on Applications of Ferroelectrics - University Park, PA, USA Duration: Aug 7 1994 → Aug 10 1994 |
Other
| Other | Proceedings of the 1994 9th IEEE International Symposium on Applications of Ferroelectrics |
|---|---|
| City | University Park, PA, USA |
| Period | 8/7/94 → 8/10/94 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering