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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Parr, A.C.S. O'Leary, R.L. Hayward, G. |
| Copyright Year | 1986 |
| Abstract | The effect of temperature on the behavior of 1-3 piezoelectric composites manufactured using various polymeric materials was assessed experimentally through electrical impedance analysis and laser vibrometry. Device behavior varied with temperature irrespective of the polymer filler. Most significant changes in the piezoelectric composites were recorded around the glass transition temperature (T/sub g/) of the polymer; movement to lower fundamental resonant frequencies and higher values of electrical impedance minima were observed at higher temperatures. Decoupling of the pillars from the polymer matrix was observed by laser vibrometry at high temperatures. The use of high T/sub g/ polymer extended the operational temperature range of a piezoelectric composite, and a high T/sub g/ polymer with improved thermal conductivity also proved beneficial. For all devices, at temperatures very close to room temperature, subtle changes in device performance, linked to polymer softening were observed. Particulate-filled materials have been investigated, and it is recognized that the high viscosities and low mechanical damping of such materials could be problematic for piezoelectric composite manufacture. The thermal solver of the PZFlex finite element code has been used to predict the temporal and spatial temperature response of a selection of the devices presented. The simulated and experimental data compare favorably. |
| Starting Page | 550 |
| Ending Page | 563 |
| Page Count | 14 |
| File Size | 1305265 |
| File Format | |
| ISSN | 08853010 |
| Volume Number | 52 |
| Issue Number | 4 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-04-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Thermal stability Piezoelectric transducers Temperature Polymers Composite materials Piezoelectric materials Manufacturing Impedance Laser transitions Thermal conductivity |
| Content Type | Text |
| Resource Type | Article |
| Subject | Acoustics and Ultrasonics Instrumentation Electrical and Electronic Engineering |
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