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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Main Authors: Kristina Ukvalbergienė, Viktorija DAKNEVIČIŪTĖ, Daiva MILAŠIENĖ
Format: Article
Language:English
Published: Kaunas University of Technology 2015-06-01
Series:Medžiagotyra
Subjects:
Online Access:http://matsc.ktu.lt/index.php/MatSc/article/view/6881
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spelling 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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