Stress intensification due to polarization switching

Huiyu Fang, Bo Deng, Qing Jiang

Research output: Contribution to journalConference article

Abstract

Experimental investigations suggest that crack growth in ferroelectric ceramics under alternating electric field appears to be governed by the magnitude of the applied electric field relative to the coercive field, defined as the theoretical strength of applied electric field that is required to induce macroscopic polarization switching. This paper presents the stress analysis for a ferroelectric bar under longitudinal vibration induced by laterally applied alternating electric field. These results indicate that the internal stresses oscillate at a frequency near the system resonance frequency, independent of the frequency of the applied electric field, and the oscillating stresses have substantially larger amplitudes when polarization switching takes place. These indications support the notion that polarization switching intensifies the internal stresses and hence promotes microcracking.

Original languageEnglish (US)
Pages (from-to)109-118
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3323
DOIs
StatePublished - Dec 1 1998
EventSmart Structures and Materials 1998 Mathematics and Control in Smart Structures - San Diego, CA, United States
Duration: May 2 1998May 5 1998

Fingerprint

Electric Field
Polarization
Electric fields
electric fields
polarization
residual stress
Residual stresses
Internal
Ferroelectric ceramics
Microcracking
stress analysis
Stress Analysis
Resonance Frequency
Crack Growth
Stress analysis
Experimental Investigation
Ferroelectric materials
Crack propagation
indication
cracks

Keywords

  • Actuators
  • Ferroelectrics
  • Transducers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Stress intensification due to polarization switching. / Fang, Huiyu; Deng, Bo; Jiang, Qing.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 3323, 01.12.1998, p. 109-118.

Research output: Contribution to journalConference article

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AB - Experimental investigations suggest that crack growth in ferroelectric ceramics under alternating electric field appears to be governed by the magnitude of the applied electric field relative to the coercive field, defined as the theoretical strength of applied electric field that is required to induce macroscopic polarization switching. This paper presents the stress analysis for a ferroelectric bar under longitudinal vibration induced by laterally applied alternating electric field. These results indicate that the internal stresses oscillate at a frequency near the system resonance frequency, independent of the frequency of the applied electric field, and the oscillating stresses have substantially larger amplitudes when polarization switching takes place. These indications support the notion that polarization switching intensifies the internal stresses and hence promotes microcracking.

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