Analysis of poling induced cracking in thick walled cylinders

Sike Liu; David Pisani; C. S. Lynch

doi:10.1117/12.847767

30 March 2010 Analysis of poling induced cracking in thick walled cylinders

Sike Liu, David Pisani, C. S. Lynch

Proceedings Volume 7644, Behavior and Mechanics of Multifunctional Materials and Composites 2010; 764409 (2010) https://doi.org/10.1117/12.847767
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

Stresses and electric fields induced in the poling processes of both polycrystalline and single crystal thick walled cylinders are investigated and compared using a finite element analysis together with a micromechanical ferroelectric constitutive law. The analysis reveals that the polarization process begins at the inner diameter and spreads outward through the cylinder as the applied electric potential is increased. The piezoelectric strain and the remnant strain produce strain fields that are not compatible with the geometry. In the single crystal material the poling is not uniform. It is affected by the angle between the crystal orientation and the electric field direction.

Citation Download Citation

Sike Liu, David Pisani, and C. S. Lynch "Analysis of poling induced cracking in thick walled cylinders", Proc. SPIE 7644, Behavior and Mechanics of Multifunctional Materials and Composites 2010, 764409 (30 March 2010); https://doi.org/10.1117/12.847767

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