Comparison of actuator performance in lead-based and lead-free piezoelectric cymbals

P. Ngernchuklin, C. Eamchotchawalit, A. Safari

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

1 Scopus citations

Abstract

Class V flextensional actuator named 'cymbal' is composed of a ceramic disk that is sandwiched between two truncated conical metal endcaps. It has received considerable attention for sensor and actuator applications due to their high displacement and moderate generative force. It is well known that the strain/displacement of the piezoelectric ceramic correlated to the piezoelectric coefficient and external electric field applied (S = dE). According to the piezoelectric coefficient (d33) of KNN-LT-LS lead-free piezoelectric ceramic was comparable to PZT-8. Therefore, the purpose of this study was to investigate the effect of different ceramic driving elements (hard PZT and KNN-LT-LS ceramics) in the flextensional cymbal actuator on the strain amplification as well as the characteristic in strain-electric field loop response. The results showed that displacement of KNN-LT-LS cymbal (11.9±0.28 μm) were two times higher than that of PZT-8 cymbal (5.65±0.07 μm) at 10 kV/cm. Moreover, bi-polar S-E loop characteristic was larger in KNN-LT-LS cymbal compared to PZT-8 cymbal. This was due to easily domain reorientation in KNN-LT-LS ceramic observed by P-E loop. Under 10 kV/cm, Pr and Ec of KNN-LT-LS ceramic were 4.9 μC/cm2 and 3.9 kV/cm whereas Pr and Ec of PZT-8 ceramic were 0.22 μC/cm2 and 1.5 kV/cm, respectively.

Original languageEnglish (US)
Title of host publication2015 Joint IEEE International Symposium on the Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop, ISAF/ISIF/PFM 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages261-264
Number of pages4
ISBN (Electronic)9781479999743
DOIs
StatePublished - Jul 29 2015
EventJoint IEEE International Symposium on the Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop, ISAF/ISIF/PFM 2015 - Singapore, Singapore
Duration: May 24 2015May 27 2015

Publication series

Name2015 Joint IEEE International Symposium on the Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop, ISAF/ISIF/PFM 2015

Other

OtherJoint IEEE International Symposium on the Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop, ISAF/ISIF/PFM 2015
Country/TerritorySingapore
CitySingapore
Period5/24/155/27/15

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

Keywords

  • Cymbal actuator
  • KNN-LS-LS
  • Lead-based ceramic
  • Lead-free ceramic
  • PZT-8

Fingerprint

Dive into the research topics of 'Comparison of actuator performance in lead-based and lead-free piezoelectric cymbals'. Together they form a unique fingerprint.

Cite this