Determination of full set material constants of piezoceramics from phase velocities

Haifeng Wang, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The determination of elastic and piezoelectric constants by means of the resonance method is described in detail in the Institute of Electrical and Electronics Engineers Standards. However, in practice, it is not easy to obtain a self-consistent complete set of elastic and piezoelectric coefficients using the resonance method alone, since the geometric requirements are often too difficult to meet in some materials and property variation from sample to sample could be substantial. In this article, we report on a characterization scheme by regression of ultrasonic velocities in different directions. The method using the Levenberg-Marquardt algorithm is very stable. Only two samples are needed to determine the whole set of the material constants. The method has been applied to doped piezoceramic lead zirconate titanate and material constants obtained at the same frequency show excellent self-consistency.

Original languageEnglish (US)
Pages (from-to)4578-4583
Number of pages6
JournalJournal of Applied Physics
Volume92
Issue number8
DOIs
StatePublished - Oct 15 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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