Effects of species and moisture content on the behaviour of solid wood under impact
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F24%3A43924018" target="_blank" >RIV/62156489:43410/24:43924018 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1007/s00107-023-01986-9" target="_blank" >https://doi.org/10.1007/s00107-023-01986-9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00107-023-01986-9" target="_blank" >10.1007/s00107-023-01986-9</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effects of species and moisture content on the behaviour of solid wood under impact
Popis výsledku v původním jazyce
The article's main aim is to assess the effects of species and moisture content (MC) on the behaviour of solid wood material under the low velocity of impact and present a pattern for predicting loading vs time curves for these species in different moisture levels. Three groups of samples (300 x 20 x 20 mm) were made from beech, oak, and spruce wood. Each group was subdivided into two groups with low moisture content (LMC) level (10-12%) and high moisture content (HMC) level (40-60%). A drop-weight impact machine did the tests, and high-speed cameras recorded the lateral specimens' surface during the impact. The digital image correlation technique (DIC) determined the strain pattern and the deflection. The timing of the crack initiation was also observed. Also, the force-time charts, the maximum force required for crack initiation, the work needed for crack initiation, and the total work required for the breakage of every specimen were gathered. A general force-time pattern with five identifiable steps was determined for each group. It turned out that the maximum deflection and longitudinal tensile strain of the beams up to crack initiation increase with increased moisture content while maximum force decreases. Unlike beech, the required work for rupture of HMC samples of oak and spruce is higher than LMC group.
Název v anglickém jazyce
Effects of species and moisture content on the behaviour of solid wood under impact
Popis výsledku anglicky
The article's main aim is to assess the effects of species and moisture content (MC) on the behaviour of solid wood material under the low velocity of impact and present a pattern for predicting loading vs time curves for these species in different moisture levels. Three groups of samples (300 x 20 x 20 mm) were made from beech, oak, and spruce wood. Each group was subdivided into two groups with low moisture content (LMC) level (10-12%) and high moisture content (HMC) level (40-60%). A drop-weight impact machine did the tests, and high-speed cameras recorded the lateral specimens' surface during the impact. The digital image correlation technique (DIC) determined the strain pattern and the deflection. The timing of the crack initiation was also observed. Also, the force-time charts, the maximum force required for crack initiation, the work needed for crack initiation, and the total work required for the breakage of every specimen were gathered. A general force-time pattern with five identifiable steps was determined for each group. It turned out that the maximum deflection and longitudinal tensile strain of the beams up to crack initiation increase with increased moisture content while maximum force decreases. Unlike beech, the required work for rupture of HMC samples of oak and spruce is higher than LMC group.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20502 - Paper and wood
Návaznosti výsledku
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)
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
European Journal of Wood and Wood Products
ISSN
0018-3768
e-ISSN
1436-736X
Svazek periodika
82
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
12
Strana od-do
23-34
Kód UT WoS článku
001067370600001
EID výsledku v databázi Scopus
2-s2.0-85171449682