Vertical and radial variation in wood acoustical and physical properties of Ailanthus altissima

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F25%3A43927878" target="_blank" >RIV/62156489:43410/25:43927878 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.22320/s0718221x/2025.31" target="_blank" >https://doi.org/10.22320/s0718221x/2025.31</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22320/s0718221x/2025.31" target="_blank" >10.22320/s0718221x/2025.31</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Vertical and radial variation in wood acoustical and physical properties of Ailanthus altissima

Popis výsledku v původním jazyce

This study investigated the vertical and radial variability of wood acoustical and physical properties in Ailanthus altissima (ailanthus tree), a species with potential applications in musical instrument construction. However, there is limited information about the variation within the stem in these properties, which is essential for assessing its suitability in acoustically demanding applications. In this context, wood density, dynamic modulus of elasticity, damping coefficient, acoustic conversion efficiency, and tangential and radial shrinkage were analyzed across three stem heights and three radial positions. Results revealed significant variation within the stem, with density and dynamic modulus of elasticity increasing from the base to the middle before declining at the top, while acoustic conversion efficiency showed an inverse trend. Radially, acoustic conversion efficiency was highest near the pith and decreased significantly toward the middle and outer parts of the stem, with no significant difference between these outer zones. The damping coefficient was lowest at the bottom logs, increased significantly at the middle, and slightly decreased at the top. Radially, the damping coefficient was lowest near the pith, increased toward the middle, and reached the highest values near the bark. Shrinkage increased significantly from pith to bark but showed minor axial variation, with similar values at the base and middle, and a significant decrease at the top of the stem. Importantly, density could be used as an indicator for acoustic conversion efficiency, enabling indirect assessment of acoustic performance. These variations highlight the potential of selecting specific stem regions to balance sound transmission and structural support, suggesting that Ailanthus altissima (ailanthus tree) could replace traditional woods for the backs and sides of stringed instruments.

Název v anglickém jazyce

Vertical and radial variation in wood acoustical and physical properties of Ailanthus altissima

Popis výsledku anglicky

This study investigated the vertical and radial variability of wood acoustical and physical properties in Ailanthus altissima (ailanthus tree), a species with potential applications in musical instrument construction. However, there is limited information about the variation within the stem in these properties, which is essential for assessing its suitability in acoustically demanding applications. In this context, wood density, dynamic modulus of elasticity, damping coefficient, acoustic conversion efficiency, and tangential and radial shrinkage were analyzed across three stem heights and three radial positions. Results revealed significant variation within the stem, with density and dynamic modulus of elasticity increasing from the base to the middle before declining at the top, while acoustic conversion efficiency showed an inverse trend. Radially, acoustic conversion efficiency was highest near the pith and decreased significantly toward the middle and outer parts of the stem, with no significant difference between these outer zones. The damping coefficient was lowest at the bottom logs, increased significantly at the middle, and slightly decreased at the top. Radially, the damping coefficient was lowest near the pith, increased toward the middle, and reached the highest values near the bark. Shrinkage increased significantly from pith to bark but showed minor axial variation, with similar values at the base and middle, and a significant decrease at the top of the stem. Importantly, density could be used as an indicator for acoustic conversion efficiency, enabling indirect assessment of acoustic performance. These variations highlight the potential of selecting specific stem regions to balance sound transmission and structural support, suggesting that Ailanthus altissima (ailanthus tree) could replace traditional woods for the backs and sides of stringed instruments.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20502 - Paper and wood

Projekt

<a href="/cs/project/LL1909" target="_blank" >LL1909: Dynamika stromu: popis mechanické odezvy na zatížení</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Maderas. Ciencia y tecnología

ISSN

0717-3644

e-ISSN

0718-221X

Svazek periodika

27

Číslo periodika v rámci svazku

08.08.2025

Stát vydavatele periodika

CL - Chilská republika

Počet stran výsledku

15

Strana od-do

"e3125"

Kód UT WoS článku

001631018100001

EID výsledku v databázi Scopus

2-s2.0-105025960650