Veres, Smith and Pinfield - IEEE-UFFC - June 2015.pdf (4.73 MB)
Download fileComparison of numerical and effective-medium modeling of porosity in layered media
journal contribution
posted on 2015-10-06, 10:54 authored by Istvan A. Veres, Robert A. Smith, Valerie PinfieldValerie PinfieldIn 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