Modeling and Characterization of Piezoelectric Fibers with Metal Core
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概要
- 論文の詳細を見る
A simple physical model of the first vibration mode of piezoelectric fibers with a metal core is developed for predicting their properties from the parameters of constituents. It is shown that the metal core diameter influences the piezoelectric properties of the fiber only to a lesser extent for diameter ratios lower than 0.3. The good accuracy of the model is confirmed by finite element modeling (FEM). A characterization procedure for actual fibers is then proposed. The properties of the piezoceramic constituent can be deduced from the fiber behavior, which is a precious tool for checking fiber quality. This procedure is applied to experimental Pb(Nb,Ni)O3–Pb(Zr,Ti)O3 fibers with a platinum core. The actual $d_{31}$ is $-112$ pC/N for the ceramic phase of the fiber instead of $-246$ pC/N for the bulk material. It is believed that the poling process (constraints due to the metal core) and the density optimization are the two key factors for improving these performances.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2005-08-15
著者
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SEBALD Gael
Institute of Fluid Science, TOHOKU University
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Sebald Gael
東北大
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Guyomar Daniel
Laboratoire de Génie Electrique et de Ferroélectricité, Institut National des Sciences Appliquées de Lyon, 8 rue de la Physique, 69621 Villeurbanne Cedex, France
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Qiu Jinhao
Intelligent System Laboratory, Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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Sebald Gael
Intelligent System Laboratory, Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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Hoshi Daisuke
Intelligent System Laboratory, Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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