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Nano X-ray tomography analysis of the cell-wall density of welded beech joints.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.
University of Stellenbosch.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-4526-9391
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-4686-4010
2015 (English)In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 10, no 4, p. 368-372Article in journal (Refereed) Published
Abstract [en]

This paper reports the results of a novel approach using nano X-ray computed tomography (CT) for the non-invasive determination of the weld-line density profile of welded wood joints. As a case study, wood samples with a dimension of 2 mm × 2 mm × 20 mm were cut from a board of welded beech (Fagus sylvatica L.). The spatial resolution of the X-ray scan was 500 nm. Densitometry results showed that welding was accompanied by a considerable increase in the bulk density and a decrease in the cell-wall density at the weld-line. The cell-wall density in the weld-line was almost 33% less than that of the unaffected wood. As an additional application of nano computed tomography, the 3D imaging also revealed details of the internal structure of the welded sample. This study showed that nano-CT is a powerful tool for the descriptive and quantitative study of welded wood

Place, publisher, year, edition, pages
2015. Vol. 10, no 4, p. 368-372
Keywords [en]
Forestry, agricultural sciences and landscape planning - Wood fibre and forest products
Keywords [sv]
Skogs- och jordbruksvetenskap samt landskapsplanering - Träfiber- och virkeslära
National Category
Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-2537DOI: 10.1080/17480272.2015.1062418ISI: 000368718400006Scopus ID: 2-s2.0-84945483187Local ID: 02917556-811c-4f26-8993-c177f6298f2dOAI: oai:DiVA.org:ltu-2537DiVA, id: diva2:975389
Note

Validerad; 2015; Nivå 1; 20150614 (dicsan)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Vaziri, MojganSandberg, DickBerg, Sven

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