Thermally modified wood: Fracture toughness in mode II examined using optical technique
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F18%3A43914501" target="_blank" >RIV/62156489:43410/18:43914501 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Thermally modified wood: Fracture toughness in mode II examined using optical technique
Original language description
Thermally modified timber (TMT) has been used as an eco-friendly alternative to tropical species that has increased hygrophobicity. Nevertheless, thermal modification influences a wide range of wood properties and brings undesired side effects such as a reduction of mechanical properties. Therefore, this paper aims to evaluate the fracture properties of TMT hypothesized to be influenced by thermal modification. Within the study, we have examined beech wood subjected to three treatments: (i) no treatment; (ii) treated at 180 oC and (iii) treated at 200 oC. The treatment was carried out over 7 hours in a thermal chamber and after the treatment, all samples were conditioned at same conditions before measurement. A 162mm artificial crack was introduced to each sample following the requirements of the end-notched flexure test in shear - mode II. The samples were tested in a three-point bending set-up that provided a global mechanical response (load-displacement curve). Resistance curves were calculated based the load displacement curves. Physical measurement was accompanied with an optical technique based on digital image correlation (DIC) providing full-field displacements and strains. The results revealed that modification temperature substantially decreases the strength in compression parallel to the fiber and energy release rate (GII) in mode II parallel to the fiber. The higher the modification temperature, the larger decrease in fracture properties.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20502 - Paper and wood
Result continuities
Project
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Continuities
O - Projekt operacniho programu
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
World Conference on Timber Engineering: Proceedings
ISBN
979-11-6019-235-3
ISSN
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e-ISSN
neuvedeno
Number of pages
6
Pages from-to
"Nestrankovano"
Publisher name
National Institute of Forest Science
Place of publication
Soul
Event location
Soul
Event date
Aug 20, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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