TY - GEN
T1 - Mechanical strain and piezoelectric properties of PZT stacks related to semi-bipolar electric cyclic fatigue
AU - Wang, Hong
AU - Lin, Hua Tay
AU - Cooper, Thomas A.
AU - Wereszczak, Andrew A.
PY - 2010
Y1 - 2010
N2 - PZT Stacks that have an inter-digital internal electrode configuration were tested to more than 108 cycles. A 100-Hz semi-bipolar sine wave with a field range of +4.5/-0.9 kV/mm was used in cycling with a concurrently applied 20 MPa preload. Significant reductions in mechanical strain and piezoelectric coefficients were observed during the cycling depending on the measuring condition. Extensive surface discharges were also observed. These surface events, as well as related breakdown, resulted in the erosion of external electrode and the outcrop of internal electrode, which partially accounted for the observed reductions. The results from this study demonstrate the feasibility of using a semi-bipolar mode to drive a PZT stack under a mechanical preload and illustrate the potential fatigue performance of the stack in service.
AB - PZT Stacks that have an inter-digital internal electrode configuration were tested to more than 108 cycles. A 100-Hz semi-bipolar sine wave with a field range of +4.5/-0.9 kV/mm was used in cycling with a concurrently applied 20 MPa preload. Significant reductions in mechanical strain and piezoelectric coefficients were observed during the cycling depending on the measuring condition. Extensive surface discharges were also observed. These surface events, as well as related breakdown, resulted in the erosion of external electrode and the outcrop of internal electrode, which partially accounted for the observed reductions. The results from this study demonstrate the feasibility of using a semi-bipolar mode to drive a PZT stack under a mechanical preload and illustrate the potential fatigue performance of the stack in service.
UR - http://www.scopus.com/inward/record.url?scp=77951997437&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:77951997437
SN - 9780470457597
T3 - Ceramic Engineering and Science Proceedings
SP - 67
EP - 77
BT - Advances in Electronic Ceramics II - A Collection of Papers Presented at the 33rd International Conference on Advanced Ceramics and Composites
T2 - Advances in Electronic Ceramics II - 33rd International Conference on Advanced Ceramics and Composites
Y2 - 18 January 2009 through 23 January 2009
ER -