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Non-destructive Testing of Thin Birch (Betula pendula Roth.) Veneers.
- Source :
-
BioResources . 2020, Vol. 15 Issue 1, p1265-1281. 17p. 4 Diagrams, 2 Charts, 5 Graphs. - Publication Year :
- 2020
-
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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19302126
- Volume :
- 15
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- BioResources
- Publication Type :
- Academic Journal
- Accession number :
- 142192136
- Full Text :
- https://doi.org/10.15376/biores.15.1.1265-1281