| Full text | |
| Author(s): |
Arnold, Francisco Jose
;
Goncalves, Marcos Sergio
;
Massaro Junior, Flavio Rubens
;
Martins, Paulo Sergio
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Ferroelectrics; v. 504, n. 1, p. 104-115, 2016. |
| Web of Science Citations: | 0 |
| Abstract | |
The performance of piezoelectric transducers depends upon a set of physical parameters. Among them, losses are one of the most important. Mechanical losses in piezoelectric devices are studied using complex numbers in the elastic coefficients of the models. Usually, numerical methods are employed to obtain the loss parameters through the minimization of an error function. We insert mechanical losses dependent on frequency in Mason's model to evaluate how this dependency affects the electrical impedance curve. The results show that a better curve fitting is achieved when the mechanical loss is a first order function of frequency. (AU) | |
| FAPESP's process: | 11/12792-3 - Development of 3D numerical methods in frequency domain for analysis of optical couplers |
| Grantee: | Marcos Sergio Goncalves |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 12/07639-4 - Power amplifier for piezoelectric transducers |
| Grantee: | Francisco José Arnold |
| Support Opportunities: | Regular Research Grants |