TY - GEN
T1 - Smart materials for high power applications
AU - Zhang, Shujun
AU - Lee, Hyeong Jae
AU - Shrout, Thomas R.
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2013
Y1 - 2013
N2 - Various PZT/epoxy 1-3 composites were investigated for high power applications. "Hard" lead zirconate titanates (PZT4 and PZT8) were chosen for active piezoelectrics owing to their high mechanical quality factors, Qms, while the passive polymers were selected based on the desired properties for high power composites - low elastic loss, low elastic modulus and high thermal conductivity. The results demonstrated that the composites with high thermal conductivity polymers generally have degraded electromechanical properties with significantly decreased mechanical quality factors, whereas the composites filled with low loss and low moduli polymers were found to have higher Qms with higher electromechanical coupling factors kt: Q m ∼ 200 and kt ∼ 0.68 for PZT4 composites; Q m ∼ 400 and kt ∼ 0.6 for PZT8 composites. The effects of high drive field on the behavior of 1-3 composites were further investigated by varying active and passive components. Improved high power characteristics of 1-3 piezoelectric composites were achieved by selection of optimized composite components, with enhanced electromechanical efficiency and thermal stability under high drive conditions. © 2013 SPIE.
AB - Various PZT/epoxy 1-3 composites were investigated for high power applications. "Hard" lead zirconate titanates (PZT4 and PZT8) were chosen for active piezoelectrics owing to their high mechanical quality factors, Qms, while the passive polymers were selected based on the desired properties for high power composites - low elastic loss, low elastic modulus and high thermal conductivity. The results demonstrated that the composites with high thermal conductivity polymers generally have degraded electromechanical properties with significantly decreased mechanical quality factors, whereas the composites filled with low loss and low moduli polymers were found to have higher Qms with higher electromechanical coupling factors kt: Q m ∼ 200 and kt ∼ 0.68 for PZT4 composites; Q m ∼ 400 and kt ∼ 0.6 for PZT8 composites. The effects of high drive field on the behavior of 1-3 composites were further investigated by varying active and passive components. Improved high power characteristics of 1-3 piezoelectric composites were achieved by selection of optimized composite components, with enhanced electromechanical efficiency and thermal stability under high drive conditions. © 2013 SPIE.
KW - HIFU
KW - High power
KW - Piezoelectric composite
KW - Transducer
UR - https://www.scopus.com/pages/publications/84878579988
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84878579988&origin=recordpage
U2 - 10.1117/12.2009275
DO - 10.1117/12.2009275
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9780819494788
VL - 8695
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Health Monitoring of Structural and Biological Systems 2013
T2 - SPIE Conference on Health Monitoring of Structural and Biological Systems 2013
Y2 - 11 March 2013 through 14 March 2013
ER -