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Fuktförändringar, klimat och mögelpåväxt vid lagring av granvirke: Kalibrering av Finit Elementmodell för fuktförändringar
Stora Enso Building and Living.
Linnéuniversitetet, Institutionen för byggteknik.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-0744-5868
Number of Authors: 3
2016 (Swedish)Report (Other academic)Alternative title
Moisture changes, climate and mold growth in spruce timber during storage : Calibration of finite elements model for moisture changes (English)
Abstract [en]

A diffusion based Finite Element- model designed to calculate changes in moisture content distribution in packages of wood during storage has been calibrated by means of combined measurements of climate and moisture content in a test package. Moisture content distribution before and after storage has been determined by dry mass measurements and X- ray Computer Tomography (CT- scanning). CT- scanning was done on individual planks to reduce interference from surrounding material. As a complement to the measurements of climate and moisture content, the test material was inspected visually after storage to determine if mould growth had occurred.The results from the study show that the moisture flux within a package of wood is slower than the moisture flux theoretically estimated based on published diffusion coefficients of wood. The moisture flux from the interior of a plank to the surface is slower than the removal of moisture from the surface, also when the plank is within a closed package covered with plastic on five surfaces.The calibration of the Finite Element model makes it ready for calculations of changes in moisture content in wood with high accuracy.

Place, publisher, year, edition, pages
2016. , 18 p.
National Category
Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-25391Local ID: efedc9e0-3e03-4b64-b6ea-693256400f0fOAI: oai:DiVA.org:ltu-25391DiVA: diva2:998443
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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