Tensile Strength, Elasticity and Cracking Character of Softwood Tissues
<p>Wood tensile strength in longitudinal direction depends on wood density and structure. Growth rings in wood consist of earlywood and latewood which differ greatly in their properties. Latewood is denser, less porous and more resistant to tension along the fiber compared earlywod. The ratio...
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Kaunas University of Technology
2015-06-01
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doaj-e1c0d067d3e24d6aab3fb1cc11b418492020-11-24T21:40:22ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892015-06-0121226026410.5755/j01.ms.21.2.68816347Tensile Strength, Elasticity and Cracking Character of Softwood TissuesKristina Ukvalbergienė0Viktorija DAKNEVIČIŪTĖ1Daiva MILAŠIENĖ2Kaunas University of TechnologyKaunas University of TechnologyKaunas University of Technology<p>Wood tensile strength in longitudinal direction depends on wood density and structure. Growth rings in wood consist of earlywood and latewood which differ greatly in their properties. Latewood is denser, less porous and more resistant to tension along the fiber compared earlywod. The ratio of latewood and earlywood is different for each type of wood species and also depends on growing conditions, climate and etc. The study is aimed to evaluate the tensile strength, elasticity and cracking character of Lithuanian-grown softwood tissues, depending on the wood species, tissue width and latewood ratio in the sample. For the study three species of wood (spruce, pine and larch) were chosen. Samples were cut with the microtome, tissues cross-sectional area of about 0.15-0.50 mm2. The ratio of latewood and earlywood was evaluated using microscope. Wood tissue tensile strength was tested in the tensile machine with a feed rate of 0.2 mm/min. Research results showed that the highest tensile strength was obtained for larch wood samples, while the spruce wood most tended to deformation. Ir was determined that the tensile strength and elasticity of wood are highly influenced by wood microstructure and earlywood and latewood ratio in the sample. Also the wood microstructure and failure mechanism of the samples were evaluated.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.21.2.6881">http://dx.doi.org/10.5755/j01.ms.21.2.6881</a></p>http://matsc.ktu.lt/index.php/MatSc/article/view/6881tensile strength, tissue, softwood, latewood, failure |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kristina Ukvalbergienė Viktorija DAKNEVIČIŪTĖ Daiva MILAŠIENĖ |
spellingShingle |
Kristina Ukvalbergienė Viktorija DAKNEVIČIŪTĖ Daiva MILAŠIENĖ Tensile Strength, Elasticity and Cracking Character of Softwood Tissues Medžiagotyra tensile strength, tissue, softwood, latewood, failure |
author_facet |
Kristina Ukvalbergienė Viktorija DAKNEVIČIŪTĖ Daiva MILAŠIENĖ |
author_sort |
Kristina Ukvalbergienė |
title |
Tensile Strength, Elasticity and Cracking Character of Softwood Tissues |
title_short |
Tensile Strength, Elasticity and Cracking Character of Softwood Tissues |
title_full |
Tensile Strength, Elasticity and Cracking Character of Softwood Tissues |
title_fullStr |
Tensile Strength, Elasticity and Cracking Character of Softwood Tissues |
title_full_unstemmed |
Tensile Strength, Elasticity and Cracking Character of Softwood Tissues |
title_sort |
tensile strength, elasticity and cracking character of softwood tissues |
publisher |
Kaunas University of Technology |
series |
Medžiagotyra |
issn |
1392-1320 2029-7289 |
publishDate |
2015-06-01 |
description |
<p>Wood tensile strength in longitudinal direction depends on wood density and structure. Growth rings in wood consist of earlywood and latewood which differ greatly in their properties. Latewood is denser, less porous and more resistant to tension along the fiber compared earlywod. The ratio of latewood and earlywood is different for each type of wood species and also depends on growing conditions, climate and etc. The study is aimed to evaluate the tensile strength, elasticity and cracking character of Lithuanian-grown softwood tissues, depending on the wood species, tissue width and latewood ratio in the sample. For the study three species of wood (spruce, pine and larch) were chosen. Samples were cut with the microtome, tissues cross-sectional area of about 0.15-0.50 mm2. The ratio of latewood and earlywood was evaluated using microscope. Wood tissue tensile strength was tested in the tensile machine with a feed rate of 0.2 mm/min. Research results showed that the highest tensile strength was obtained for larch wood samples, while the spruce wood most tended to deformation. Ir was determined that the tensile strength and elasticity of wood are highly influenced by wood microstructure and earlywood and latewood ratio in the sample. Also the wood microstructure and failure mechanism of the samples were evaluated.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.21.2.6881">http://dx.doi.org/10.5755/j01.ms.21.2.6881</a></p> |
topic |
tensile strength, tissue, softwood, latewood, failure |
url |
http://matsc.ktu.lt/index.php/MatSc/article/view/6881 |
work_keys_str_mv |
AT kristinaukvalbergiene tensilestrengthelasticityandcrackingcharacterofsoftwoodtissues AT viktorijadakneviciute tensilestrengthelasticityandcrackingcharacterofsoftwoodtissues AT daivamilasiene tensilestrengthelasticityandcrackingcharacterofsoftwoodtissues |
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