This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Web of Science (4) Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Li, F.-X. Articles by Fang, D.-N. Search for Related Content Social Bookmarking                         What's this?

Effects of Lateral Stress on the Electromechanical Response of Ferroelectric Ceramics: Experiments versus Model

Department of Engineering Mechanics, Tsinghua University, Beijing, China

Dai-Ning Fang

Department of Engineering Mechanics, Tsinghua University, Beijing, China, fangdn{at}mail.tsinghua.edu.cn

Mechanical depolarization is an important cause of failure in piezoelectric actuators and sensors. In this paper, the effects of one-dimensional lateral pressure on the linear and nonlinear behavior of PZT ceramics were experimentally studied. The experimental results show that the lateral pressure can change the crystal symmetry of the ceramic from 1mm to mm2. A domain-switching model dividing each 180 switching to two successive 90 switching is proposed to explain the experimental results. Finally, based on the experimental results, a simple design is proposed to prevent piezoelectric sensors from mechanical depolarization. Meanwhile, the simple design is apt to increase the hydrostatic piezoelectric constant of the piezoelectric marine sensors, thus enhancing their sensitivity.

Key Words: ferroelectric ceramics • domain switching • depolarization

Journal of Intelligent Material Systems and Structures, Vol. 16, No. 7-8, 583-588 (2005)
DOI: 10.1177/1045389X05051627


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?