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dc.contributor.author
Lämmlein, Sarah
dc.contributor.author
Künniger, Tina
dc.contributor.author
Rüggeberg, Markus
dc.contributor.author
Schwarze, Francis W.M.R.
dc.contributor.author
Mannes, David
dc.contributor.author
Burgert, Ingo
dc.date.accessioned
2021-01-08T17:07:23Z
dc.date.available
2020-11-25T15:23:31Z
dc.date.available
2020-11-26T09:39:54Z
dc.date.available
2021-01-08T17:07:23Z
dc.date.issued
2021-03
dc.identifier.other
10.1016/j.rinma.2020.100137
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/453076
dc.identifier.doi
10.3929/ethz-b-000453076
dc.description.abstract
Violin varnishes influence the vibrational properties of tonewood. However, the frequency dependence of the varnish influence and mechanical properties of typical varnishes has received little attention. The viscoelastic properties of various violin varnish materials over the audible frequency range were characterized by dynamic mechanical analysis. The properties of the studied varnishes showed comparable frequency dependencies. For all varnishes, E increased and tan(δ) decreased with increasing frequency. The results were in good agreement with an analytical mechanical model, which was used for additional numerical FEM calculations. The approach of numerically determining varnish-induced changes in the vibrational properties on basis of the individual wood and varnish properties was confirmed through comparison with experimental results obtained in an earlier study. The latter procedure was subsequently used to analyse varnish-induced changes in the eigenfrequencies of a violin soundboard. The results revealed that the frequency dependence of the varnish properties determined the specific influence of varnishes on the vibrational properties of tonewood, which should be taken into account when assessing the impact of varnishes.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Violin varnish
en_US
dc.subject
Viscoelasticity
en_US
dc.subject
Frequency dependence
en_US
dc.subject
Dynamic mechanical analysis (DMA)
en_US
dc.subject
Numerical modal analysis
en_US
dc.subject
FEM
en_US
dc.title
Frequency dependent mechanical properties of violin varnishes and their impact on vibro-mechanical tonewood properties
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2020-10-06
ethz.journal.title
Results in Materials
ethz.journal.volume
9
en_US
ethz.pages.start
100137
en_US
ethz.size
23 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.scopus
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02606 - Institut für Baustoffe (IfB) / Institute for Building Materials::03917 - Burgert, Ingo / Burgert, Ingo
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02606 - Institut für Baustoffe (IfB) / Institute for Building Materials::03917 - Burgert, Ingo / Burgert, Ingo
ethz.date.deposited
2020-11-25T15:23:40Z
ethz.source
BATCH
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-01-08T17:07:34Z
ethz.rosetta.lastUpdated
2021-02-15T23:02:55Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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