Hygromechanical strains during the drying of Eucalyptus nitens boards

Collapse and drying stresses are currently induced during the drying of Eucalyptus nitens in solid wood products. The purpose of this study was to investigate these drying stresses by measuring hygromechanical strains during the drying of Eucalyptus nitens boards. Small samples of Eucalyptus nitens...

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Autores principales:	Pérez-Peña,N, Cloutier,A, Segovia,F, Salinas-Lira,C, Sepúlveda-Villarroel,V, Salvo-Sepúlveda,L, Elustondo,D.M, Ananías,R. A
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2016
Materias:	Deflection deformation drying stresses mechano-sorption wood drying
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2016000200001
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spelling	oai:scielo:S0718-221X20160002000012016-05-13Hygromechanical strains during the drying of Eucalyptus nitens boardsPérez-Peña,NCloutier,ASegovia,FSalinas-Lira,CSepúlveda-Villarroel,VSalvo-Sepúlveda,LElustondo,D.MAnanías,R. A Deflection deformation drying stresses mechano-sorption wood drying Collapse and drying stresses are currently induced during the drying of Eucalyptus nitens in solid wood products. The purpose of this study was to investigate these drying stresses by measuring hygromechanical strains during the drying of Eucalyptus nitens boards. Small samples of Eucalyptus nitens wood were oriented in the radial and tangential directions and tested to determine the hygromechanical strains during the drying process. This experimental work consisted of cantilevered bending tests conducted under variable relative humidity conditions. Tests were performed in a conditioning chamber at 30 °C with an equilibrium moisture content ranging from 22 to 12% under four levels of stress: 0, 10, 20 and 30% of the rupture load. The strains were determined using strain gauges, and the total deflection was measured with a linear variable differential transformer. The results show that in hygromechanical strains during the drying of Eucalyptus nitens, both the surface deformation and mechano-sorption strain were found to be proportional to the applied stress and reached their maximum values in the tangential direction. The total deflection increased 0,18 mm/mm with a surface deformation of 0,20 mm/mm, and the mechano-sorptive strain provides a greater contribution with a value of 0,11 mm/mm, thus corresponding to 59% of the total deformation. In attempts to improve the drying schedules of Eucalyptus nitens to develop solid wood products, mechano-sorptive behavior may be applied to relieve collapse and drying stress.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.18 n.2 20162016-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2016000200001en10.4067/S0718-221X2016005000021
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Deflection deformation drying stresses mechano-sorption wood drying
spellingShingle	Deflection deformation drying stresses mechano-sorption wood drying Pérez-Peña,N Cloutier,A Segovia,F Salinas-Lira,C Sepúlveda-Villarroel,V Salvo-Sepúlveda,L Elustondo,D.M Ananías,R. A Hygromechanical strains during the drying of Eucalyptus nitens boards
description	Collapse and drying stresses are currently induced during the drying of Eucalyptus nitens in solid wood products. The purpose of this study was to investigate these drying stresses by measuring hygromechanical strains during the drying of Eucalyptus nitens boards. Small samples of Eucalyptus nitens wood were oriented in the radial and tangential directions and tested to determine the hygromechanical strains during the drying process. This experimental work consisted of cantilevered bending tests conducted under variable relative humidity conditions. Tests were performed in a conditioning chamber at 30 °C with an equilibrium moisture content ranging from 22 to 12% under four levels of stress: 0, 10, 20 and 30% of the rupture load. The strains were determined using strain gauges, and the total deflection was measured with a linear variable differential transformer. The results show that in hygromechanical strains during the drying of Eucalyptus nitens, both the surface deformation and mechano-sorption strain were found to be proportional to the applied stress and reached their maximum values in the tangential direction. The total deflection increased 0,18 mm/mm with a surface deformation of 0,20 mm/mm, and the mechano-sorptive strain provides a greater contribution with a value of 0,11 mm/mm, thus corresponding to 59% of the total deformation. In attempts to improve the drying schedules of Eucalyptus nitens to develop solid wood products, mechano-sorptive behavior may be applied to relieve collapse and drying stress.
author	Pérez-Peña,N Cloutier,A Segovia,F Salinas-Lira,C Sepúlveda-Villarroel,V Salvo-Sepúlveda,L Elustondo,D.M Ananías,R. A
author_facet	Pérez-Peña,N Cloutier,A Segovia,F Salinas-Lira,C Sepúlveda-Villarroel,V Salvo-Sepúlveda,L Elustondo,D.M Ananías,R. A
author_sort	Pérez-Peña,N
title	Hygromechanical strains during the drying of Eucalyptus nitens boards
title_short	Hygromechanical strains during the drying of Eucalyptus nitens boards
title_full	Hygromechanical strains during the drying of Eucalyptus nitens boards
title_fullStr	Hygromechanical strains during the drying of Eucalyptus nitens boards
title_full_unstemmed	Hygromechanical strains during the drying of Eucalyptus nitens boards
title_sort	hygromechanical strains during the drying of eucalyptus nitens boards
publisher	Universidad del Bío-Bío
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2016000200001
work_keys_str_mv	AT perezpenan hygromechanicalstrainsduringthedryingofeucalyptusnitensboards AT cloutiera hygromechanicalstrainsduringthedryingofeucalyptusnitensboards AT segoviaf hygromechanicalstrainsduringthedryingofeucalyptusnitensboards AT salinaslirac hygromechanicalstrainsduringthedryingofeucalyptusnitensboards AT sepulvedavillarroelv hygromechanicalstrainsduringthedryingofeucalyptusnitensboards AT salvosepulvedal hygromechanicalstrainsduringthedryingofeucalyptusnitensboards AT elustondodm hygromechanicalstrainsduringthedryingofeucalyptusnitensboards AT ananiasra hygromechanicalstrainsduringthedryingofeucalyptusnitensboards
_version_	1714202622270898176

Hygromechanical strains during the drying of Eucalyptus nitens boards

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