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Predicting the strength of Norway spruce by microwave scanning: a comparison with other scanning techniques
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.
2007 (English)In: Wood and Fiber Science, ISSN 0735-6161, Vol. 39, no 1, p. 167-172Article in journal (Refereed) Published
Abstract [en]

In this study, 90 boards of Norway spruce (Picea abies (L.) Karst.) sized 48 x 148 mm in cross-section, have been examined using different scanning and measurement techniques. All of the boards originated from a sawmill located in southern Finland. Planar X-ray scanning, microwave scanning, and grain-angle measurement have been performed. In addition, strength and elastic properties were assessed for eachpiece by four point bending. The purpose of the study was to relate the potential of microwave scanning compared to other, industrially available techniques and to explain the physiological background of the microwave responses. The results show that the microwave signal, after transmission through wood, contains information about the bending strength and the modulus of elasticity. The correlation to densityis a key factor. Annual ring width was also found to be correlated both to microwave measurements and strength properties.

Place, publisher, year, edition, pages
2007. Vol. 39, no 1, p. 167-172
National Category
Other Mechanical Engineering
Research subject
Wood Technology
Identifiers
URN: urn:nbn:se:ltu:diva-9596Local ID: 83ed8810-0388-11dc-8b31-000ea68e967bOAI: oai:DiVA.org:ltu-9596DiVA: diva2:982534
Note
Validerad; 2007; 20070516 (nillun)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Lundgren, NilsBrännström, MattiasHagman, OlleOja, Johan
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CiteExportLink to record
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