Numerical simulation of effective phase velocity and attenuation of shear elastic wave propagation in unidirectional composite materials

Jun Zhang, W. Ye, T.X. Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

In this paper, a simple simulation approach is presented for calculating the effective phase velocity and attenuation coefficient of elastic shear waves propagating in composite materials with randomly distributed unidirectional inclusions. As an application of the developed numerical approach, the phase velocities and attenuation coefficients of the coherent waves in four different types of composite material are simulated for various incident frequencies up to ?. Numerical results are compared with theoretical predictions obtained from three representative theoretical models. While all theoretical results agree very well with numerical values at low incident frequencies, the discrepancies increase with the increased incident frequency and volume fraction of inclusions. It has been found that within the frequency and volume fraction ranges considered in this work, the generalized self-consistent model by Kanaun and Levin [18] seems to provide the most accurate estimations. © 2013 Rolls-Royce PLC. Published by Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1200-1211
Number of pages12
JournalUltrasonics
Volume53
Issue number6
DOIs
Publication statusPublished - 1 Aug 2013
Externally publishedYes

Keywords

  • Attenuation coefficient
  • Coherent wave
  • Composite materials
  • Multiple scattering theory
  • Phase velocity

ASJC Scopus subject areas

  • Medicine(all)
  • Acoustics and Ultrasonics

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