Fatigue Crack Growth And Piezoelectric Property Decay Induced By Cyclic Electric Fields For An Actuation Piezoceramic

Zhang, X. P., Ye, L., Mai, Y. W. and Galea, S. (2004). Fatigue Crack Growth And Piezoelectric Property Decay Induced By Cyclic Electric Fields For An Actuation Piezoceramic. In: Atrens, A., Boland, J. N., Clegg, R. and Griffiths, J. R., Structural Integrity and Fracture International Conference (SIF'04), Brisbane, Australia, (395-400). 26-29 September 2004.

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Author Zhang, X. P.
Ye, L.
Mai, Y. W.
Galea, S.
Title of paper Fatigue Crack Growth And Piezoelectric Property Decay Induced By Cyclic Electric Fields For An Actuation Piezoceramic
Conference name Structural Integrity and Fracture International Conference (SIF'04)
Conference location Brisbane, Australia
Conference dates 26-29 September 2004
Publication Year 2004
Sub-type Fully published paper
Editor Atrens, A.
Boland, J. N.
Clegg, R.
Griffiths, J. R.
Start page 395
End page 400
Abstract/Summary Degradation of piezoelectric properties of piezomaterials has long been a concern in the applications of actuators and sensors. In this work, alternating electric field induced fatigue crack growth and effect of cyclic electric field on piezoelectric property decay were characterized for a polarized PZT-PIC151. The results show that a relatively high alternating electric field drives the pre-existing microcracks to grow very fast initially due to the superposition of electrostriction induced stress and residual stress at the crack tip, then slow down gradually to becoming dormant. The butterfly loop evolution shows that cyclic electric field strongly degrades the piezoelectric properties due to the frequent domain switching. The output strain decays more than 50% after 106 electric cycles at 0.9 Ec for PIC 151 pellet bonded on an aluminum beam.
Subjects 290801 Structural Engineering
Keyword fatigue crack growth
electric fields
piezoelectric property decay
piezomaterials
actuators
sensors
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Fri, 24 Dec 2004, 10:00:00 EST by Lucy Peachey on behalf of Research Management Office