Rectification of Lamb wave propagation in thin plates with piezo-dielectric periodic structures

Yuhei Iwasaki, Kenji Tsuruta, Atsushi Ishikawa

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Based on a heterostructured plate consisting of piezoelectric-ceramic/epoxy-resin composites with different periodicities, we design a novel acoustic diode for the symmetrical/asymmetrical (S/A) mode of Lamb wave at audible ranges. The acoustic diode is constructed with two parts, i.e., the mode conversion part and the mode selection part, and the mode conversion mechanism at the interface is applied to the mode hybridization from S to S+A and for the mode conversion from A to S. The phonon band structures for each part are calculated and optimized so that the mode selection is realized for a specific mode at the junction. Finite-element simulations prove that the proposed acoustic diode achieves efficient rectification at audio frequency ranges for both S and A mode incidences of the Lamb wave.

Original languageEnglish
Article number07KB02
JournalJapanese Journal of Applied Physics
Volume55
Issue number7
DOIs
Publication statusPublished - Jul 1 2016

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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