Smart materials for high power applications

Shujun Zhang, Hyeong Jae Lee, Thomas R. Shrout

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


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.

Original languageEnglish (US)
Title of host publicationHealth Monitoring of Structural and Biological Systems 2013
StatePublished - 2013
EventSPIE Conference on Health Monitoring of Structural and Biological Systems 2013 - San Diego, CA, United States
Duration: Mar 11 2013Mar 14 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherSPIE Conference on Health Monitoring of Structural and Biological Systems 2013
Country/TerritoryUnited States
CitySan Diego, CA

All Science Journal Classification (ASJC) codes

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


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