Theoretical Studies of the Properties of Ferroelectric Ceramic-Polymer Composite Materials
| dc.contributor.advisor | Zewdie, Habtamu (PhD) | |
| dc.contributor.author | Mohammed, Hussen | |
| dc.date.accessioned | 2018-06-20T07:10:01Z | |
| dc.date.accessioned | 2023-11-09T16:17:37Z | |
| dc.date.available | 2018-06-20T07:10:01Z | |
| dc.date.available | 2023-11-09T16:17:37Z | |
| dc.date.issued | 1994-02 | |
| dc.description.abstract | The existing theories which are used to interpret experimental data on the dielectric, elastic and piezoelectric properties of composite materials are summarized. An effective medium theory which treats both components symmetrically has been investigated to show that the geometric factors are important parameters which could take care of both the effects of shape of inclusions and the concept of connectivity, and to demonstrate that the shape of inclusions greatly affect the dielectric, elastic and piezoelectric properties of composite materials. The properties of composite materials are studied as a function of the PZT volume fraction and the geometric factors and showed that the geometric factor of the component with low volume fraction are more effective and the piezoelectric property of composite materials depend more on the geometric factors for the dielectric constant than on those of the elastic constant. The theoretical predictions are generalized to study the temperature dependence of the properties of the composite materials. New expressions for the piezoelectric constants of composite materials are derived and used to study their volume fraction, shape of inclusions and temperature dependence. Finally, the theoretical predictions are tested with experimental data on a variety of composite materials. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/2033 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa Universty | en_US |
| dc.subject | Ceramic-Polymer Composite Materials | en_US |
| dc.title | Theoretical Studies of the Properties of Ferroelectric Ceramic-Polymer Composite Materials | en_US |
| dc.type | Thesis | en_US |