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HYGROMECHANICAL STRAINS DURING THE DRYING OF EUCALYPTUS NITENS BOARDS

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dc.creatorVÍCTOR ANDRÉS SEPÚLVEDA VILLARROEL
dc.creatorNATALIA DE LOS ANGELES PÉREZ PEÑA
dc.creatorLINETTE PAOLA SALVO SEPÚLVEDA
dc.creatorCARLOS HERNÁN SALINAS LIRA
dc.creatorRUBÉN ANDRÉS ANANÍAS ABUTER
dc.date2016
dc.date.accessioned2025-01-10T14:41:29Z
dc.date.available2025-01-10T14:41:29Z
dc.date.issued2016
dc.description.abstractCOLLAPSE 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 °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
dc.formatapplication/pdf
dc.identifier.doi10.4067/S0718-221X2016005000021
dc.identifier.issn0717-3644
dc.identifier.issn0718-221X
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/8539
dc.languagespa
dc.publisherMADERAS: CIENCIA Y TECNOLOGIA
dc.relation.uri10.4067/S0718-221X2016005000021
dc.rightsOPEN ACCESS
dc.subjectWood drying
dc.subjectMechano-sorption
dc.subjectDrying stresses
dc.subjectDeformation
dc.subjectDeflection
dc.titleHYGROMECHANICAL STRAINS DURING THE DRYING OF EUCALYPTUS NITENS BOARDS
dc.typeARTÍCULO
dspace.entity.typePublication
oaire.licenseConditionCC BY 4.0
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA MECANICA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
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