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Design of low-loss 1-3 piezoelectric composites for high-power transducer applications

Journal Article


Abstract


  • Lead zirconate titanate (PZT)/polymer 1–3 composites have improved electromechanical

    properties compared with monolithic counterparts, but possess a low mechanical quality factor,

    limiting their use in high-power transducer applications. The goal of this work was to improve the

    mechanical quality factor of 1–3 PZT/polymer composites by optimizing the polymer materials.

    Theoretical analysis and modeling were performed for optimum composite design and various

    polymers were prepared and characterized. 1–3 piezocomposites were constructed and their

    electromechanical properties were experimentally determined. 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 mechanical quality factors with

    higher electrome-chanical coupling factors: Qm ~ 200 and kt

    ~ 0.68 for PZT4 composites; Qm ~

    400 and kt

    ~ 0.6 for PZT8 composites. The improved mechanical quality factor of 1–3

    piezocomposites may offer improved performance and thermal stability of transducers under highdrive operation

UOW Authors


Publication Date


  • 2012

Citation


  • Lee, H. Jae. & Zhang, S. (2012). Design of low-loss 1-3 piezoelectric composites for high-power transducer applications. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 59 (9), 1969-1975.

Scopus Eid


  • 2-s2.0-84866636296

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 1969

End Page


  • 1975

Volume


  • 59

Issue


  • 9

Place Of Publication


  • United States

Abstract


  • Lead zirconate titanate (PZT)/polymer 1–3 composites have improved electromechanical

    properties compared with monolithic counterparts, but possess a low mechanical quality factor,

    limiting their use in high-power transducer applications. The goal of this work was to improve the

    mechanical quality factor of 1–3 PZT/polymer composites by optimizing the polymer materials.

    Theoretical analysis and modeling were performed for optimum composite design and various

    polymers were prepared and characterized. 1–3 piezocomposites were constructed and their

    electromechanical properties were experimentally determined. 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 mechanical quality factors with

    higher electrome-chanical coupling factors: Qm ~ 200 and kt

    ~ 0.68 for PZT4 composites; Qm ~

    400 and kt

    ~ 0.6 for PZT8 composites. The improved mechanical quality factor of 1–3

    piezocomposites may offer improved performance and thermal stability of transducers under highdrive operation

UOW Authors


Publication Date


  • 2012

Citation


  • Lee, H. Jae. & Zhang, S. (2012). Design of low-loss 1-3 piezoelectric composites for high-power transducer applications. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 59 (9), 1969-1975.

Scopus Eid


  • 2-s2.0-84866636296

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 1969

End Page


  • 1975

Volume


  • 59

Issue


  • 9

Place Of Publication


  • United States