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Determination of tensile strain fields in Norway spruce side boards using two master-slave connected contact-free measurement systems based on digital image correlation.
SP Sveriges Tekniska Forskningsinstitut. (Träbyggteknik)ORCID iD: 0000-0002-8513-0394
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Träbyggteknik)
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Träbyggteknik)
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Träbyggteknik)ORCID iD: 0000-0001-5319-4855
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2011 (English)In: Proceedings (Poster session) of the 17th International Nondestructive Testing and Evaluation of Wood Symposium, Sopron, Hungary, September 14-16, 2011., 2011Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

A sample of nine Norway spruce side boards of narrow dimensions were tested in tension according to the standard EN 408. Strain fields were simultaneously measured using two master-slave connected measurement systems based on digital image correlation (DIC). Each system performed a separate measurement project measuring about 50% of the measurable length of each board and the results were combined, visualized and evaluated as one project using specific DIC software. The objectives were to investigate the possibility of measuring strain fields by use of multi-system measurements, to analyze the strain field distribution and to investigate the possibility of determining local modulus of elasticity (MOE) using strain field measurements. The results show that longitudinal strain fields were useful for identification of areas with reduced stiffness, that lateral board displacements, measured by the DIC systems, can be applied for identification of local defects, and that strain fields can be used for local MOE determination.

Place, publisher, year, edition, pages
2011.
Keyword [en]
side boards, strain measurement, contact-free, tension, modulus of elasticity
National Category
Building Technologies
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-39937OAI: oai:DiVA.org:lnu-39937DiVA: diva2:787601
Conference
The 17th International Nondestructive Testing and Evaluation of Wood Symposium, Sopron, Hungary, September 14-16, 2011.
Available from: 2015-02-11 Created: 2015-02-10 Last updated: 2016-12-15Bibliographically approved

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fulltext(769 kB)106 downloads
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CiteExportLink to record
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