Determination of lamb wave dispersion data in lossy anisotropic plates using time domain finite element analysis. part II: application to 2-2 and 1-3 piezoelectric composite transducer arrays

G. Hayward, J. Hyslop

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13 Citations (Scopus)

Abstract

The use of finite element modeling, combined with optical generation and detection of Lamb waves in plate structures, was extended to encompass periodic ceramic-polymer materials typical of those encountered in 1-3 and 2-2 piezoelectric composite array transducers. The resultant dispersion data was employed to predict the occurrence of Lamb wave-induced cross talk in composite monolithic arrays. The finite element modeling method was then used to simulate the dispersion behavior of two array structures that were subsequently manufactured: a 1-D 45% volume fraction linear array coupon and a 2-D 35% volume fraction array coupon. Excellent agreement between theory and experiment was obtained using impedance measurements and laser scans of the surface displacement profile at selected frequencies. Regions of strong inter-element cross-coupling were identified and these are shown to correlate very well with the dispersion data obtained for the dual-phase plate material. This work is considered to provide a useful basis for the design of wideband monolithic composite arrays and minimization of guided wave propagation along the array substrate.
LanguageEnglish
Pages449-455
Number of pages7
JournalIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Volume53
Issue number2
DOIs
Publication statusPublished - Feb 2006

Fingerprint

anisotropic plates
Lamb waves
wave dispersion
Surface waves
Transducers
transducers
Finite element method
composite materials
Volume fraction
Composite materials
Guided electromagnetic wave propagation
Wave propagation
Lasers
cross coupling
impedance measurement
linear arrays
Polymers
Substrates
wave propagation
Experiments

Keywords

  • acoustic dispersion
  • acoustic impedance
  • composite materials
  • finite element analysis
  • periodic structures piezoceramics
  • piezoelectric transducers
  • ultrasonics

Cite this

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title = "Determination of lamb wave dispersion data in lossy anisotropic plates using time domain finite element analysis. part II: application to 2-2 and 1-3 piezoelectric composite transducer arrays",
abstract = "The use of finite element modeling, combined with optical generation and detection of Lamb waves in plate structures, was extended to encompass periodic ceramic-polymer materials typical of those encountered in 1-3 and 2-2 piezoelectric composite array transducers. The resultant dispersion data was employed to predict the occurrence of Lamb wave-induced cross talk in composite monolithic arrays. The finite element modeling method was then used to simulate the dispersion behavior of two array structures that were subsequently manufactured: a 1-D 45{\%} volume fraction linear array coupon and a 2-D 35{\%} volume fraction array coupon. Excellent agreement between theory and experiment was obtained using impedance measurements and laser scans of the surface displacement profile at selected frequencies. Regions of strong inter-element cross-coupling were identified and these are shown to correlate very well with the dispersion data obtained for the dual-phase plate material. This work is considered to provide a useful basis for the design of wideband monolithic composite arrays and minimization of guided wave propagation along the array substrate.",
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T2 - IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

AU - Hayward, G.

AU - Hyslop, J.

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N2 - The use of finite element modeling, combined with optical generation and detection of Lamb waves in plate structures, was extended to encompass periodic ceramic-polymer materials typical of those encountered in 1-3 and 2-2 piezoelectric composite array transducers. The resultant dispersion data was employed to predict the occurrence of Lamb wave-induced cross talk in composite monolithic arrays. The finite element modeling method was then used to simulate the dispersion behavior of two array structures that were subsequently manufactured: a 1-D 45% volume fraction linear array coupon and a 2-D 35% volume fraction array coupon. Excellent agreement between theory and experiment was obtained using impedance measurements and laser scans of the surface displacement profile at selected frequencies. Regions of strong inter-element cross-coupling were identified and these are shown to correlate very well with the dispersion data obtained for the dual-phase plate material. This work is considered to provide a useful basis for the design of wideband monolithic composite arrays and minimization of guided wave propagation along the array substrate.

AB - The use of finite element modeling, combined with optical generation and detection of Lamb waves in plate structures, was extended to encompass periodic ceramic-polymer materials typical of those encountered in 1-3 and 2-2 piezoelectric composite array transducers. The resultant dispersion data was employed to predict the occurrence of Lamb wave-induced cross talk in composite monolithic arrays. The finite element modeling method was then used to simulate the dispersion behavior of two array structures that were subsequently manufactured: a 1-D 45% volume fraction linear array coupon and a 2-D 35% volume fraction array coupon. Excellent agreement between theory and experiment was obtained using impedance measurements and laser scans of the surface displacement profile at selected frequencies. Regions of strong inter-element cross-coupling were identified and these are shown to correlate very well with the dispersion data obtained for the dual-phase plate material. This work is considered to provide a useful basis for the design of wideband monolithic composite arrays and minimization of guided wave propagation along the array substrate.

KW - acoustic dispersion

KW - acoustic impedance

KW - composite materials

KW - finite element analysis

KW - periodic structures piezoceramics

KW - piezoelectric transducers

KW - ultrasonics

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