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Evaluating the visc...
Evaluating the viscoelastic shear properties of clear wood via off-axis compression testing and digital-image correlation
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- Bengtsson, Rhodel (author)
- Uppsala universitet,Tillämpad mekanik
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Bergeron, Louis (author)
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- Afshar, Reza (author)
- Uppsala universitet,Tillämpad mekanik
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- Mousavi, Mahmoud (author)
- Uppsala universitet,Tillämpad mekanik
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Gamstedt, E. Kristofer (author)
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Mechanics of time-dependant materials. - 1385-2000 .- 1573-2738.
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Highly anisotropic materials like wood and unidirectional polymer composite structures are sensitive to shear deformations, in particular close to fixed joints. Large wooden structures in buildings and, e.g. wind-turbine blades, are designed to last for decades, and hence are susceptible to unwanted creep deformations. For improved structural design, the shear-creep properties of the material are needed. These are rarely available in the literature, possibly because of technical difficulties to achieve a well-defined shear-stress state in test specimens. For cost-efficient testing, this goal of a pure stress state necessarily needs to be compromised. In the present study, we propose a simple test method based on uniaxial compression on wooden cubes, but is equally applicable for fibre composites. The viscoelastic shear properties of Norway spruce (Picea abies) under off-axis creep compression tests have been characterised in all three directions. The tests are performed in a controlled climate chamber and the creep strains are captured using digital-image correlation.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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