Paper Title:
Effect of Electromechanical Loadings on Fracture Strength of Piezoelectric Ceramics
  Abstract

The effect of electromechanical loadings including their sequence, which was motivated by the property of crack energy density for piezoelectric material, was experimentally investigated. Three-point bending fracture test was performed for two piezoelectric ceramics under different electromechanical loading conditions. It was found that the fracture loads under closed circuit condition are greater than those under open circuit condition. Effect of applied electric field on fracture load in the test varied with materials. Applied electric field always enhanced crack extension in C-21 ceramics regardless of their directions, while it produced very little effect on crack extension under negative electric fields in C-2 ceramics. It was also found that electromechanical loading sequence clearly affects fracture strength, although its effect varies also with materials.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
1544-1547
DOI
10.4028/www.scientific.net/KEM.353-358.1544
Citation
B. G. Nam, H.S. Na, R. Liu, K. Watanabe, "Effect of Electromechanical Loadings on Fracture Strength of Piezoelectric Ceramics", Key Engineering Materials, Vols. 353-358, pp. 1544-1547, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: T.W. Kim, H.Y. Jeong, J.H. Choe, Y.H. Kim
Abstract:A new simulation methodology using the finite element method (FEM) was proposed to predict the fatigue life of tires. In the FEM simulation...
102
Authors: C.S. Jeong, Byeung Gun Nam, Katsuhiko Watanabe
Abstract:Creep crack growth (CCG) rate has been organized frequently by C* or Ct parameter However, crack behavior of early stage under unsteady...
106
Authors: Rong Feng Liu, Byeung Gun Nam, Katsuhiko Watanabe
Abstract:An electrical nonlinear constitutive model for piezoelectric material is studied in this paper. Electric yielding criterion and yielding...
1513
Authors: Peng Fei Zhao, Qiang Zhang, Jun Wu, Di Zhang
Chapter 19: Theory and Application of Friction and Wear
Abstract:For lot of structures, especially turbine blades, damper can dissipate the vibration energy by friction. Investigating the property of metal...
1979
Authors: Tomasz Samborski
Chapter 4: Researching and Designing of Technologies, Machines and Apparatus for Technological Systems in Mechanical Engineering
Abstract:The durability and reliability of electromechanical drives is inseparably linked to the broadly defined environmental conditions under which...
257