Comparison of numerical and effective-medium modeling of porosity in layered media
journal contributionposted on 2015-10-06, 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.
Support is acknowledged from an ongoing Fellowship in Manufacturing of the UK Engineering and Physical Sciences Research Council (EPSRC; EP/K037315/1).
- Aeronautical, Automotive, Chemical and Materials Engineering
- Chemical Engineering
Published inIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Pages1086 - 1094
CitationVERES, 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.
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
- VoR (Version of Record)
Publisher statementThis 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/
NotesThis work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/