lnu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Acoustic properties of modified wood under different humid conditions and their relevance for musical instruments
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology. (Forest Products)
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology. (Forest Products)ORCID iD: 0000-0002-6909-2025
2018 (English)In: Applied Acoustics, ISSN 0003-682x, Vol. 140, p. 92-99Article in journal (Refereed) Published
Abstract [en]

In musical instrument making, there is a strong need to find alternatives to the traditional endangered and expensive tropical wood species used today. The present study examined whether different commercial and experimental modified wood materials have the necessary acoustic qualities under different humid conditions (dry, standard and wet) to contribute to the use of raw materials for wooden musical instruments. The materials were thermally-modified wood (ash, aspen and birch), acetylated wood (beech, maple and radiata pine), melamine- and phenol formaldehyde-treated beech and furfurylated Scots pine (Kebony Scots pine). Investigations involved physical (density ρ, Equilibrium moisture content EMC, volumetric shrinkage) and dynamic elastic testing by a free-free flexural vibration method to determine various acoustic characteristics: specific dynamic modulus (MOEdyn/ρ), damping coefficient (tanδ), speed of sound (c), specific acoustic impedance (z), sound radiation coefficient (R) and acoustic conversion efficiency (ACE). The modified materials and especially acetylated wood showed low EMC values and high dimensional stability at each humidity level, which are considered important factors for making quality musical instruments. Based on the obtained value ranges of all acoustical properties, the different modified wood materials could find uses in musical instruments where specific characteristics of sound are required. Furthermore, most of the modified materials showed an excellent acoustic performance in the three humid conditions based on a high ACE and low tanδ. Furfurylated Scots pine and phenol formaldehyde-treated beech showed an inferior acoustic quality with the lowest ACE and the highest tanδ, which is a less favourable combination for most of the musical instruments.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 140, p. 92-99
Keywords [en]
Wood modification; Dimensional stability; Free-free flexural vibration; Dynamic elastic modulus; Damping; Sound velocity; Sound radiation; Acoustic impedance; Acoustic conversion efficiency
National Category
Wood Science
Research subject
Physics, Waves and Signals
Identifiers
URN: urn:nbn:se:lnu:diva-74511DOI: 10.1016/j.apacoust.2018.05.017ISI: 000440121900010OAI: oai:DiVA.org:lnu-74511DiVA, id: diva2:1209751
Available from: 2018-05-24 Created: 2018-05-24 Last updated: 2018-08-28Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Ahmed, Sheikh AliAdamopoulos, Stergios

Search in DiVA

By author/editor
Ahmed, Sheikh AliAdamopoulos, Stergios
By organisation
Department of Forestry and Wood Technology
In the same journal
Applied Acoustics
Wood Science

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 180 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf