Wave propagation in 0-3/3-3 connectivity composites with complex microstructure

TE Gomez Alvarez-Arenas, A.J. Mulholland, G. Hayward, J. Gomatam

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

This work presents a study of the properties of particulate composites. The whole range of particle volume fraction (0-1) and ideal 0-3, 3-3 and intermediate 0-3/3-3 connectivities are analysed. Two different approaches to produce a realistic model of the complex microstructure of the composites are considered. The first one is based on a random location of mono-dispersed particles in the matrix; while the second incorporates a size distribution of the particles based on experimental measurements. Different particle shapes are also considered. A commercial finite element package was used to study the propagation of acoustic plane waves through the composite materials. Due to the complexity of the problem, and as a first step, a two-dimensional model was adopted. The results obtained for the velocity of sound propagation from the finite element technique are compared with those from other theoretical approaches and with experimental data. The study validates the use of this technique to model acoustic wave propagation in 0-3/3-3 connectivity composites. In addition, the finite element calculations, along with the detailed description of the microstructure of the composite, provide valuable information about the micromechanics of the sample and the influence of the microstructure on macroscopic properties.
Original languageEnglish
Pages (from-to)897-907
Number of pages10
JournalUltrasonics
Volume38
Issue number9
DOIs
Publication statusPublished - Sep 2000

Keywords

  • Random composites
  • Wave propagation
  • Materials characterisation

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