BOKU - Universität für Bodenkultur Wien - Forschungsinformationssystem
Gewählte Publikation:
Pramreiter, M; Stadlmann, A; Linkeseder, F; Keckes, J; Muller, U.
(2020):
Non-destructive Testing of Thin Birch (Betula pendula Roth.) Veneers
BIORESOURCES. 2020; 15(1): 1265-1281.
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- Abstract:
- In technical applications of wood-based composites, the predictability of elasticity and strength is important. The aim of this study was to predict the static modulus of elasticity and tensile strength of thin (0.55 mm +/- 0.05 mm) birch veneers. Based on the dynamic modulus of elasticity estimated via means of wave transmission time the observed dynamic modulus of elasticity was on average 14% lower than the corresponding static modulus of elasticity. This difference could be explained by a decreased measuring area during the tensile testing or by defects within the samples. The dynamic modulus of elasticity correlated well with the static modulus of elasticity (r = 0.821). Therefore, using wave transmission time to non-destructively predict the elasticity of veneers proves to be a promising tool. The dynamic modulus of elasticity showed a significant and positive correlation with the tensile strength (r = 0.665), but this correlation was weaker than with the static modulus of elasticity. Therefore, the wave transmission time or the static modulus of elasticity must be combined with additional strength-influencing properties, such as fiber angle or density, to allow for a highly accurate prediction of tensile strength.
- Autor*innen der BOKU Wien:
- Linkeseder Florian
- Müller Ulrich
- Pramreiter Maximilian
- Stadlmann Alexander
- Find related publications in this database (Keywords)
- Dynamic modulus of elasticity
- Elastic properties
- Static modulus of elasticity
- Strength
- Stress wave propagation
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