Comparison of acoustic non-destructive methods and semidestructive methods for logs and timber assessment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F19%3A43916498" target="_blank" >RIV/62156489:43410/19:43916498 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378297:_____/19:00524032

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of acoustic non-destructive methods and semidestructive methods for logs and timber assessment

Popis výsledku v původním jazyce

The selection of high quality material is one of the first step in building of timber constructions. Hence, there is a call for techniques that would provide reliable methods for assessment of logs and timber. The goal of this study is to test spruce logs and subsequently evaluate timber by several methods, and to describe relationships between the evaluated material parameters. The trees from stand in Czech Republic with optimal ecological conditions for Norway spruce were felled during 3 seasons, consequently milled to logs and tested by several methods. Logs were processed into 68 beams made by 1. traditional carpentry way or 2. machine milling. The influence of traditional way of water treatment of timber was tested too. All the beams were tested by frequency-resonant method in the course of almost 2 years. Wood densities, sound velocities, dynamic moduli of elasticity, micro- drilling and indentation resistances were measured. The visual assessment was carried out as well. The relationships between properties were statistically tested to determine significance of manufacturing parameters, reliability of used non-destructive and semi-destructive methods to predict wood quality and also to describe the significance of harvest period or timber treatment to quality and properties of timber.

Název v anglickém jazyce

Comparison of acoustic non-destructive methods and semidestructive methods for logs and timber assessment

Popis výsledku anglicky

The selection of high quality material is one of the first step in building of timber constructions. Hence, there is a call for techniques that would provide reliable methods for assessment of logs and timber. The goal of this study is to test spruce logs and subsequently evaluate timber by several methods, and to describe relationships between the evaluated material parameters. The trees from stand in Czech Republic with optimal ecological conditions for Norway spruce were felled during 3 seasons, consequently milled to logs and tested by several methods. Logs were processed into 68 beams made by 1. traditional carpentry way or 2. machine milling. The influence of traditional way of water treatment of timber was tested too. All the beams were tested by frequency-resonant method in the course of almost 2 years. Wood densities, sound velocities, dynamic moduli of elasticity, micro- drilling and indentation resistances were measured. The visual assessment was carried out as well. The relationships between properties were statistically tested to determine significance of manufacturing parameters, reliability of used non-destructive and semi-destructive methods to predict wood quality and also to describe the significance of harvest period or timber treatment to quality and properties of timber.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/DG16P02M026" target="_blank" >DG16P02M026: Historické dřevěné konstrukce: typologie, diagnostika a tradiční opracování dřeva</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 62nd International Convention of Society of Wood Science and Technology

ISBN

978-0-9817876-9-5

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

333-340

Název nakladatele

Society of Wood Science and Technology

Místo vydání

Monona

Místo konání akce

Tenaya Lodge

Datum konání akce

20. 10. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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