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Cristin-resultat-ID:
1952401
Sist endret:
3. desember 2021, 14:10
NVI-rapporteringsår:
2021
Resultat
Vitenskapelig artikkel
2021
Acoustic Characterization of Inhomogenous Layers using Finite Element Method
Per Kristian Bolstad
Tung Manh
Martijn Frijlink
og
Lars Hoff
Tidsskrift
Tidsskrift
Proceedings - IEEE Ultrasonics Symposium
ISSN 1948-5719
e-ISSN 1948-5727
NVI-nivå 1
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Om resultatet
Om resultatet
Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Open Access
Lenker
Lenker
original online (doi)
https://doi.org/10.1109/IUS52206.2021.9593890
Institusjonsarkiv
hdl.handle.net/11250/3010255
Beskrivelse
Beskrivelse
Engelsk
Tittel
Acoustic Characterization of Inhomogenous Layers using Finite Element Method
Sammendrag
This study presents a finite element approach to estimate acoustic parameters of layers of arbitrary compositions using 2D and 3D models. In this approach the resonance frequency of a layer to be investigated is found by exciting the layer with plane waves and studying the reflected and transmitted sound pressure from the layer. Compressional and shear modes can be excited separately by varying the angle of incidence. A script for generating inhomogeneous layers with randomly distributed inclusions of arbitrary shape and size was developed for this study. A Matlab application was built for processing the result and comparison with analytical calculations. The 2D and 3D models were validated by comparing derived acoustic parameters of known materials with no more than 0.06% deviation from expected values. Estimated parameters for a layer of gold with 10.6% volume fraction of spherical inclusions of voids of 3 µm and 5 µm diameter was found to range from 2540 m/s to 2652 m/s for compressional sound speed and from 1039 m/s to 1067 for shear speed of sound.
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fullstendig beskrivelse
Bidragsytere
Bidragsytere
Per Kristian Bolstad
Forfatter
ved Institutt for mikrosystemer ved Universitetet i Sørøst-Norge
Tung Manh
Forfatter
ved Institutt for mikrosystemer ved Universitetet i Sørøst-Norge
Martijn Frijlink
Forfatter
ved Institutt for mikrosystemer ved Universitetet i Sørøst-Norge
Lars Hoff
Forfatter
ved Institutt for mikrosystemer ved Universitetet i Sørøst-Norge
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