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Variation of modulus of elasticity in the tangential direction with moisture content and temperature for Norway Spruce (Picea abies)
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-0145-080X
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.
2012 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 7, no 4, 4730-4743 p.Article in journal (Refereed) Published
Abstract [en]

Modulus of elasticity (MOE) in the tangential direction for Norway spruce, Picea abies (L.) H.Karst was measured. Test samples were tested in three-point bending, and moisture content (MC) and temperature were varied between the green condition and 7% MC and between 20°C and 80°C, respectively. An adjustment of measured MOE to the ideally tangential direction was made by using correction factors calculated from finite element simulations. The results show MOE and the gradients with respect to MC and temperature and how they vary with MC and temperature. The gradients are factors in gradient terms in the incremental stress-strain relation for linear elastic behaviour during load cycles where there are mechanical loads and at the same time varying MC and temperature. The gradient terms add to the temperature and MC expansion coefficients and may be of significant size for cases with high stress, high temperature and high MC.

Place, publisher, year, edition, pages
2012. Vol. 7, no 4, 4730-4743 p.
Keyword [en]
Materials science - Other material science
Keyword [sv]
Teknisk materialvetenskap - Övrig teknisk materialvetenskap
National Category
Other Mechanical Engineering
Research subject
Wood Technology
Identifiers
URN: urn:nbn:se:ltu:diva-2628Local ID: 0448eb98-a1be-444c-a926-57bf74b4b777OAI: oai:DiVA.org:ltu-2628DiVA: diva2:975481
Note
Validerad; 2012; 20120807 (matse)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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CiteExportLink to record
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