Comparison of numerical and effective-medium modeling of porosity in layered media

Istvan A. Veres, Robert A. Smith, Valerie J. Pinfield

Research output: Contribution to journalArticle (Academic Journal)

4 Citations (Scopus)

Abstract

In this study, modeling approaches for porosity in layered media are presented and compared. First, an effective-medium model is used to account for the frequencydependent attenuation of the elastic waves. The effective-medium model is based on a single-scattering approach, i.e., it neglects multiple-scattering effects. Then, the effective-medium model is compared in time-domain finite element simulations. The numerical model allows the study of the scattering of the elastic waves on randomly distributed spherical cavities and also accounts for multiple-scattering effects. The models are compared to investigate the validity of the effective-medium model approach. The calculated reflected laminate responses and transmission spectra from the two models show a good agreement.

Original languageEnglish
Article number7119989
Pages (from-to)1086-1094
Number of pages9
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume62
Issue number6
DOIs
Publication statusPublished - 1 Jun 2015

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