Ultrasonic technique for evaluation of initial stadium of wood degradation in exterior conditions without ground contact

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F16%3A72047" target="_blank" >RIV/60460709:41320/16:72047 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1515/forj-2016-0016" target="_blank" >http://dx.doi.org/10.1515/forj-2016-0016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/forj-2016-0016" target="_blank" >10.1515/forj-2016-0016</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ultrasonic technique for evaluation of initial stadium of wood degradation in exterior conditions without ground contact

Popis výsledku v původním jazyce

The experiment evaluate the possibility of using non-destructive measure techniques of the mechanical properties of wood using ultrasonic to determine the initial stages of degradation by biotic and abiotic factors in the outdoors without ground contact. Nine tree species were tested: spruce, pine, Douglas fir, larch, oak, black locust, maple, poplar and alder. Test specimens were exposed to the exterior according to EN 927-3, Prague-Suchdol in the Czech Republic. Measuring changes in velocity of ultrasonic using the apparatus Ultrasonic Timer and moisture content change were measured after 1, 2, 3, 4 and 6 months. Certain ways of detecting the initial stages of damage have been demonstrated to trees oak, larch and spruce. The initial stages of damage by molds at non-durable maple, alder and poplar had not a clear impact on the decrease in the speed of ultrasonic, as well as hairline surface cracks at the Douglas fir.

Název v anglickém jazyce

Ultrasonic technique for evaluation of initial stadium of wood degradation in exterior conditions without ground contact

Popis výsledku anglicky

The experiment evaluate the possibility of using non-destructive measure techniques of the mechanical properties of wood using ultrasonic to determine the initial stages of degradation by biotic and abiotic factors in the outdoors without ground contact. Nine tree species were tested: spruce, pine, Douglas fir, larch, oak, black locust, maple, poplar and alder. Test specimens were exposed to the exterior according to EN 927-3, Prague-Suchdol in the Czech Republic. Measuring changes in velocity of ultrasonic using the apparatus Ultrasonic Timer and moisture content change were measured after 1, 2, 3, 4 and 6 months. Certain ways of detecting the initial stages of damage have been demonstrated to trees oak, larch and spruce. The initial stages of damage by molds at non-durable maple, alder and poplar had not a clear impact on the decrease in the speed of ultrasonic, as well as hairline surface cracks at the Douglas fir.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/QJ1520006" target="_blank" >QJ1520006: Hodnocení rizika poškození lesních porostů větrem: vývoj a kalibrace národního prediktivního modelu</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Lesnicky časopis (Forestry Journal)

ISSN

0323-1046

e-ISSN

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Svazek periodika

62

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

5

Strana od-do

164-168

Kód UT WoS článku

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EID výsledku v databázi Scopus

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