Acoustic properties of tropical woods used in marimba bars

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F19%3A43917126" target="_blank" >RIV/62156489:43410/19:43917126 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Acoustic properties of tropical woods used in marimba bars
Original language description
Marimba is an idiophone musical instrument. The most frequently used species for marimba bars are the tropical ones, such as Palissandre, Padouk, Wengé (etc...). The reasons rest on particular values of mechanical and acoustic properties needed for idiophone instruments, such as density, stiffness, hardness, dimensional stability, damping, radiation and acoustic conversion efficiency etc. This paper present experimental evaluation of main properties as well as relations between the properties. The vibro-acoustic properties were measured in bending based on the first vibration mode, so that the free-free vibration method was involved. The species implicated were Padouk, Jatobá and Merbau; 45 specimens were used for each wood species. The results evinced particular high values of damping, but still in the limits shown in literature. Merbau got the best MOE value. ACEs were precisely inside the range of literature. A direct relation between damping and density wasn't found; yet, a linear regression of Young's modulus of elasticity and tany (in Merbau) was reached with a r2 of 0.353. Eventually, Kruskal Wallis Anova evinced that M0EB assumed significant reduction with a damping over 0.007.
Czech name
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Czech description
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Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Wood Science and Engineering in the Third Millenium: Proceedings of the International Conference (ICWSE 2019)
ISBN
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ISSN
1843-2689
e-ISSN
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Number of pages
6
Pages from-to
107-112
Publisher name
Universitatea Transilvania din Brasov
Place of publication
Brasov
Event location
Brašov
Event date
Nov 7, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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