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/