| 단결정 PMN-29PT 적층형 작동기: 제작과 성능 |
| 박훈철, 아디아타마 판지, 이호용1 |
건국대학교 신기술융합학과
1선문대학교 신소재공학과 |
| A Single-crystal PMN-29PT Stack Actuator: Fabrication and Performance |
| Hoon Cheol Park, Panji Adyatama, Ho-Yong Lee1 |
Department of Advanced Technology Fusion, Konkuk University
1Department of Advanced Materials Engineering, Sunmoon University |
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| ABSTRACT |
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Piezoelectric PMN-29PT single crystal multilayer actuators [100 $mm^2$ in cross section and 22 mm in length] are designed and fabricated by stacking square plates [$10{times}10{times}0.5(t);mm^3$] of PMN-29PT single crystals having a $d_{33}$ of about 1,500 pC/N. The characteristics of PMN-29PT multilayer actuators are compared with those of P-025.40P multilayer PZT ceramic actuators [490 $mm^2$ in cross section and 60 mm in length] produced by PI in Germany. Even though the total volume of the PMN-29PT single crystal multilayer actuator is only about 7.5% of that of the P-025.40P ceramic multilayer actuator, PMN-29PT single crystal multilayer actuators are expected to show very similar properties to P-025.40P ceramic actuators in terms of static stroke and blocking force. Therefore, on the basis of their smaller mass and volume compared to the conventional PZT ceramic multilayer actuators, piezoelectric PMN-29PT single crystal multilayer actuators have significant potential regarding the development of various high performance actuators for aerospace subsystems. |
| Key words:
PMN-PT single crystal, Multilayer actuator, Piezoelectric |
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