Assessment of physical and mechanical properties of Papua New Guinea timber species

Abstract: A comprehensive testing program has been developed to assess different physical and mechanical properties of 26 commercial and lesser-known Papua New Guinea species from secondary and plantation forests. The impact of log position in a tree on the mechanical properties has also been assess...

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Autores principales:	Belleville,Benoit, Lancelot,Kilva, Galore,Elaine, Ozarska,Barbara
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2020
Materias:	Compression strength flexural bending strength hardness plantations regrowth forests shear stiffness
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2020000100003
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spelling	oai:scielo:S0718-221X20200001000032020-05-08Assessment of physical and mechanical properties of Papua New Guinea timber speciesBelleville,BenoitLancelot,KilvaGalore,ElaineOzarska,Barbara Compression strength flexural bending strength hardness plantations regrowth forests shear stiffness Abstract: A comprehensive testing program has been developed to assess different physical and mechanical properties of 26 commercial and lesser-known Papua New Guinea species from secondary and plantation forests. The impact of log position in a tree on the mechanical properties has also been assessed to optimize the utilization of timbers along the value chain. The results showed that stiffness and bending strength tend to decrease or remain unchanged along the stem. Shear strength and Janka hardness displayed a similar trend to a lesser extent where the position in the tree had a limited impact on compression strength properties. Thus, segregating based on log position can be of interest where desired mechanical properties and costs associated with segregating justify optimum mechanical properties for the intended end use. The properties of selected species from plantations and regrowth forests were generally lower than those found in the literature for timbers from old-growth forests. The size of specimens tested, the amount and provenance of tested material, and some adaptive traits for tropical tree species are some factors potentially explaining observed differences. However, a comparison with recent studies tends to confirm the overall reduction of physical and mechanical properties when compared with old-growth forests timbers.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.22 n.1 20202020-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2020000100003en10.4067/S0718-221X2020005000101
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Compression strength flexural bending strength hardness plantations regrowth forests shear stiffness
spellingShingle	Compression strength flexural bending strength hardness plantations regrowth forests shear stiffness Belleville,Benoit Lancelot,Kilva Galore,Elaine Ozarska,Barbara Assessment of physical and mechanical properties of Papua New Guinea timber species
description	Abstract: A comprehensive testing program has been developed to assess different physical and mechanical properties of 26 commercial and lesser-known Papua New Guinea species from secondary and plantation forests. The impact of log position in a tree on the mechanical properties has also been assessed to optimize the utilization of timbers along the value chain. The results showed that stiffness and bending strength tend to decrease or remain unchanged along the stem. Shear strength and Janka hardness displayed a similar trend to a lesser extent where the position in the tree had a limited impact on compression strength properties. Thus, segregating based on log position can be of interest where desired mechanical properties and costs associated with segregating justify optimum mechanical properties for the intended end use. The properties of selected species from plantations and regrowth forests were generally lower than those found in the literature for timbers from old-growth forests. The size of specimens tested, the amount and provenance of tested material, and some adaptive traits for tropical tree species are some factors potentially explaining observed differences. However, a comparison with recent studies tends to confirm the overall reduction of physical and mechanical properties when compared with old-growth forests timbers.
author	Belleville,Benoit Lancelot,Kilva Galore,Elaine Ozarska,Barbara
author_facet	Belleville,Benoit Lancelot,Kilva Galore,Elaine Ozarska,Barbara
author_sort	Belleville,Benoit
title	Assessment of physical and mechanical properties of Papua New Guinea timber species
title_short	Assessment of physical and mechanical properties of Papua New Guinea timber species
title_full	Assessment of physical and mechanical properties of Papua New Guinea timber species
title_fullStr	Assessment of physical and mechanical properties of Papua New Guinea timber species
title_full_unstemmed	Assessment of physical and mechanical properties of Papua New Guinea timber species
title_sort	assessment of physical and mechanical properties of papua new guinea timber species
publisher	Universidad del Bío-Bío
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2020000100003
work_keys_str_mv	AT bellevillebenoit assessmentofphysicalandmechanicalpropertiesofpapuanewguineatimberspecies AT lancelotkilva assessmentofphysicalandmechanicalpropertiesofpapuanewguineatimberspecies AT galoreelaine assessmentofphysicalandmechanicalpropertiesofpapuanewguineatimberspecies AT ozarskabarbara assessmentofphysicalandmechanicalpropertiesofpapuanewguineatimberspecies
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Assessment of physical and mechanical properties of Papua New Guinea timber species

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