| 상온과 고온에서 압축하중을 받는 PZT에서의 잔류상태변수와 선형재료상수의 변화 |
| 지대원, 김상주 |
| 서울시립대학교 기계정보공학과 |
| Evolution of Remnant State Variables and Linear Material Moduli in a PZT Cube under Compressive Stress at Room and High Temperatures |
| Dae Won Ji, Sang-Joo Kim |
| Department of Mechanical and Information Engineering, University of Seoul |
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| ABSTRACT |
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A poled lead zirconate titanate (PZT) cube specimen is subjected to impulse-type compressive stress with increasing magnitude in parallel to the poling direction at four room and high temperatures. During the ferroelastic domain switching induced by the compressive stress, electric displacement in the poling direction and longitudinal and transverse strains are measured. Using the measured responses, linear material properties, namely, the piezoelectric and elastic compliance coefficients, are evaluated by a graphical method, and the effects of stress and temperature are analyzed. Finally, the dependency of the evaluated linear material properties on relative remnant polarization is analyzed and discussed. |
| Key words:
PZT, Ferroelastic switching, Remnant polarization, Linear moduli, Temperature |
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