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3D micro-scale deformations of wood in bending: synchrotron radiation μCT data analyzed with digital volume correlation
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-7395-3302
Electronics/Metrology Laboratory, Swiss Federal Laboratories for Materials Testing and Research (Empa).
Wood Laboratory, Swiss Federal Laboratories for Materials Testing and Research (Empa).
Electronics/Metrology Laboratory, Swiss Federal Laboratories for Materials Testing and Research (Empa).
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2008 (English)In: Journal of Structural Biology, ISSN 1047-8477, E-ISSN 1095-8657, Vol. 164, no 3, p. 255-262Article in journal (Refereed) Published
Abstract [en]

A micro-scale three-point-bending experiment with a wood specimen was carried out and monitored by synchrotron radiation micro-computed tomography. The full three-dimensional wood structure of the 1.57 × 3.42 × 0.75 mm3 specimen was reconstructed at cellular level in different loading states. Furthermore, the full three-dimensional deformation field of the loaded wood specimen was determined by digital volume correlation, applied to the reconstructed data at successive loading states. Results from two selected regions within the wood specimen are presented as continuous displacement and strain fields in both 2D and 3D. The applied combination of synchrotron radiation micro-computed tomography and digital volume correlation for the deformation analysis of wood under bending stress is a novel application in wood material science. The method offers the potential for the simultaneous observation of structural changes and quantified deformations during in situ micro-mechanical experiments. Moreover, the high spatial resolution allows studying the influence of anatomical features on the fracture behaviour of wood. Possible applications of this method range from bio-mechanical observations in fresh plant tissue to fracture mechanics aspects in structural timber.

Place, publisher, year, edition, pages
2008. Vol. 164, no 3, p. 255-262
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-15964DOI: 10.1016/j.jsb.2008.08.004ISI: 000264521200003PubMedID: 18804168Scopus ID: 2-s2.0-55649108412Local ID: f8c65ee0-0577-11dd-b034-000ea68e967bOAI: oai:DiVA.org:ltu-15964DiVA, id: diva2:988940
Note

Validerad; 2008; 20080408 (fred)

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

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Forsberg, Fredrik

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