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Machine learning-based prediction of internal checks in weathered thermally modified timber
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.ORCID iD: 0000-0001-6756-3682
University of British Columbia, Canada.
University of British Columbia, Canada.
University of British Columbia, Canada.
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2021 (English)In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 281, article id 122193Article in journal (Refereed) Published
Abstract [en]

This study investigated possibilities to predict the presence of internal checks in thermally modified Norway spruce timber after 2.5 years of weathering based on the initial properties of the boards. Machine-learning classification enabled sorting the input parameters based on their relative importance for accurate predictions. The parameters of thermally modified timber with the highest relative importance were annual ring width followed by initial moisture content, density and dynamic stiffness. Whereas after kiln drying these were, density, annual ring width, initial moisture content and acoustic velocity. The results showed that predictions are possible, and an accuracy of 67% was achieved by using annual ring width combined with density and initial moisture content, or acoustic velocity that can be determined after either kiln drying or thermal treatment. (C) 2020 Published by Elsevier Ltd.

Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 281, article id 122193
Keywords [en]
Acoustic velocity, Decision tree, Non-destructive testing, Norway spruce, Outdoor above-ground exposure, Timber grading
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
URN: urn:nbn:se:lnu:diva-102392DOI: 10.1016/j.conbuildmat.2020.122193ISI: 000634563100002Scopus ID: 2-s2.0-85101561672Local ID: 2020OAI: oai:DiVA.org:lnu-102392DiVA, id: diva2:1546489
Available from: 2021-04-22 Created: 2021-04-22 Last updated: 2021-04-27Bibliographically approved

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van Blokland, JoranAdamopoulos, Stergios

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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