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dc.contributor.authorBolstad, Per Kristian
dc.contributor.authorManh, Tung
dc.contributor.authorFrijlink, Martijn
dc.contributor.authorHoff, Lars
dc.date.accessioned2022-08-05T08:07:08Z
dc.date.available2022-08-05T08:07:08Z
dc.date.created2021-11-08T15:03:10Z
dc.date.issued2021
dc.identifier.citationBolstad, P. K., Manh, T., Frijlink, M., & Hoff, L. (2021, September 11-16). Acoustic Characterization of Inhomogenous Layers using Finite Element Method [Conference presentation]. 2021 IEEE International Ultrasonics Symposium (IUS). Xi’an.en_US
dc.identifier.issn1948-5719
dc.identifier.urihttps://hdl.handle.net/11250/3010255
dc.description.abstractThis 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.en_US
dc.language.isoengen_US
dc.titleAcoustic Characterization of Inhomogenous Layers using Finite Element Methoden_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.rights.holder© 2021 IEEE.en_US
dc.source.pagenumber4en_US
dc.source.journalProceedings - IEEE Ultrasonics Symposiumen_US
dc.identifier.doihttps://doi.org/10.1109/IUS52206.2021.9593890
dc.identifier.cristin1952401
dc.relation.projectNorges forskningsråd: 245963en_US
dc.relation.projectNorges forskningsråd: 237887en_US
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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