Veres, Smith and Pinfield - IEEE-UFFC - June 2015.pdf (4.73 MB)
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Comparison of numerical and effective-medium modeling of porosity in layered media

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posted on 06.10.2015, 10:54 authored by Istvan A. Veres, Robert A. Smith, Valerie PinfieldValerie Pinfield
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.

Funding

Support is acknowledged from an ongoing Fellowship in Manufacturing of the UK Engineering and Physical Sciences Research Council (EPSRC; EP/K037315/1).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

Volume

62

Issue

6

Pages

1086 - 1094

Citation

VERES, I.A., SMITH, R.A. and PINFIELD, V.J., 2015. Comparison of numerical and effective-medium modeling of porosity in layered media. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 62 (6), pp.1086-1094.

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Version

VoR (Version of Record)

Publisher statement

This is an Open Access article made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/

Publication date

2015

Notes

This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/

ISSN

1525-8955;0885-3010

Language

en

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