The mechanics of some degradation mechanisms in ferroelectric ceramic actuators

M. Y. He; Z. Suo; R. M. McMeeking; A. G. Evans; Cs Lynch

doi:10.1117/12.174070

The mechanics of some degradation mechanisms in ferroelectric ceramic actuators

M. Y. He
, Z. Suo
, R. M. McMeeking
, A. G. Evans
, Cs Lynch

University of California at Santa Barbara

Research output: Contribution to journal › Conference article › peer-review

20 Scopus citations

Abstract

Several degradation mechanisms in ferroelectric ceramics are analyzed in this article. A ferroelectric crystal under cyclic electric field fatigues by forming a-domain bands. An energy based model is proposed, indicating that these bands are retarded by the electric field, but driven by the shear stress resolved onto the bands. The stress has been attributed to the misfit strain near the 180° domain wall and the edge of the electrodes. A second problem is related to fracture of piezoelectric ceramics. A double-cantilever beam subjected to combined electrical and mechanical loadings is analyzed using finite elements. Also analyzed is electrode debonding, which is shown to decrease capacitance.

Original language	English
Pages (from-to)	344-356
Number of pages	13
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	2189
DOIs	https://doi.org/10.1117/12.174070
State	Published - 1 May 1994
Externally published	Yes
Event	1994 North American Conference on Smart Structures and Materials: Smart Materials - Orlando, United States Duration: 13 Feb 1994 → 18 Feb 1994

Access to Document

10.1117/12.174070

Cite this

@article{d210d11a53834d719eaf037d5690ce23,

title = "The mechanics of some degradation mechanisms in ferroelectric ceramic actuators",

abstract = "Several degradation mechanisms in ferroelectric ceramics are analyzed in this article. A ferroelectric crystal under cyclic electric field fatigues by forming a-domain bands. An energy based model is proposed, indicating that these bands are retarded by the electric field, but driven by the shear stress resolved onto the bands. The stress has been attributed to the misfit strain near the 180° domain wall and the edge of the electrodes. A second problem is related to fracture of piezoelectric ceramics. A double-cantilever beam subjected to combined electrical and mechanical loadings is analyzed using finite elements. Also analyzed is electrode debonding, which is shown to decrease capacitance.",

author = "He, \{M. Y.\} and Z. Suo and McMeeking, \{R. M.\} and Evans, \{A. G.\} and Cs Lynch",

note = "Publisher Copyright: {\textcopyright} 1994 SPIE. All rights reserved.; 1994 North American Conference on Smart Structures and Materials: Smart Materials ; Conference date: 13-02-1994 Through 18-02-1994",

year = "1994",

month = may,

day = "1",

doi = "10.1117/12.174070",

language = "英语",

volume = "2189",

pages = "344--356",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

}

TY - JOUR

T1 - The mechanics of some degradation mechanisms in ferroelectric ceramic actuators

AU - He, M. Y.

AU - Suo, Z.

AU - McMeeking, R. M.

AU - Evans, A. G.

AU - Lynch, Cs

PY - 1994/5/1

Y1 - 1994/5/1

N2 - Several degradation mechanisms in ferroelectric ceramics are analyzed in this article. A ferroelectric crystal under cyclic electric field fatigues by forming a-domain bands. An energy based model is proposed, indicating that these bands are retarded by the electric field, but driven by the shear stress resolved onto the bands. The stress has been attributed to the misfit strain near the 180° domain wall and the edge of the electrodes. A second problem is related to fracture of piezoelectric ceramics. A double-cantilever beam subjected to combined electrical and mechanical loadings is analyzed using finite elements. Also analyzed is electrode debonding, which is shown to decrease capacitance.

AB - Several degradation mechanisms in ferroelectric ceramics are analyzed in this article. A ferroelectric crystal under cyclic electric field fatigues by forming a-domain bands. An energy based model is proposed, indicating that these bands are retarded by the electric field, but driven by the shear stress resolved onto the bands. The stress has been attributed to the misfit strain near the 180° domain wall and the edge of the electrodes. A second problem is related to fracture of piezoelectric ceramics. A double-cantilever beam subjected to combined electrical and mechanical loadings is analyzed using finite elements. Also analyzed is electrode debonding, which is shown to decrease capacitance.

UR - https://www.scopus.com/pages/publications/0005639293

U2 - 10.1117/12.174070

DO - 10.1117/12.174070

M3 - 会议文章

AN - SCOPUS:0005639293

SN - 0277-786X

VL - 2189

SP - 344

EP - 356

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - 1994 North American Conference on Smart Structures and Materials: Smart Materials

Y2 - 13 February 1994 through 18 February 1994

ER -

The mechanics of some degradation mechanisms in ferroelectric ceramic actuators

Abstract

Access to Document

Other files and links

Fingerprint

Cite this