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MECHANICAL PROPERTIES CHARACTERIZATION TO SEGREGATE OF EUCALYPTUS NITENS FAMILIES BY NANOINDENTATION RELATED TO THE DEGREE OF CRACKING IN LOGS

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dc.creatorPAULINA NATALIA VALENZUELA CARRASCO
dc.creatorWILLIAM ARNOLDO GACITÚA ESCOBAR
dc.creatorCECILIA DEL CARMEN BUSTOS ÁVILA
dc.date2015
dc.date.accessioned2025-01-10T14:33:25Z
dc.date.available2025-01-10T14:33:25Z
dc.date.issued2015
dc.description.abstractSIX EUCALYPTUS NITENS FAMILIES FROM TWO SOILS IN THE 8TH REGION OF CHILE, CLAY AND TRUMAO, WERE STUDIED TO SELECT FAMILIES WITH LOWER DEGREE OF CRACKING. CRACKING PARAMETERS EVALUATED AT MESOSCALE, NEXT TO NANOMECHANICAL PROPERTIES OF THE CELULAR STRUCTURE, WERE RELATED IN A REPRESENTATIVE VOLUMEN ELEMENT OF THESE TREE, SUCH AS PERCENTAGE OF CRACKED AREA OF TREES RELATING THEM TO THE DUCTILITY RATIO (E/H) OBTAINED OF VALUES OF MODULUS OF ELASTICITY (E) AND HARDNESS (H) BY NANOINDENTATION AND THE MODULUS OF RESILIENCE (UR) OF THE MIDDLE LAMELLA AND S2-LAYER OF THE CELL WALL WERE ANALYZED. FURTHERMORE, IT WAS DETERMINED THAT THE DIFFERENCE BETWEEN THE MODULUS OF RESILIENCE (?UR) OF THE MIDDLE LAMELLA WITH THE S2-LAYER IS A GOOD INDICATOR OF THE INTERFACIAL STRESS INDUCING FRACTURES IN THE S1-LAYER. USING NANOCHARACTERIZATION IT WAS ESTABLISHED THAT THE MIDDLE LAMELLA IS MORE BRITTLE AND SUSCEPTIBLE TO GENERATE MICROCRACKS THAT SPREAD TO MESO SCALE. THE ?UR BETWEEN THE MIDDLE LAMELLA AND S2 LAYER SHOWN TO BE LOWER IN FAMILIES 2 AND 5. THESE FAMILIES SHOWED TO HAVE LOWER LEVELS OF SHEAR STRESS AT THE INTERFACE BETWEEN THE MIDDLE LAMELLA AND S2-LAYER, THEREFORE THE AMOUNT OF MICROCRACKS THAT OCCUR IS LOWER, THERE IS A GOOD RELATIONSHIP WITH THE PERCENTAGE OF MEASURED CRACKS IN THESE FAMILIES OF EUCALYPTUS NITENS. ACCORDING THESE FINDINGS, THE FAMILIES THAT SHOW LOW DEGREE OF INTERFACIAL TENSIÓN AT CELULAR LEVEL AND LOW CRACKS INDEX WERE FAMILY 2 AND FAMILY 5.
dc.formatapplication/pdf
dc.identifier.doi10.4067/S0718-221X2015005000048
dc.identifier.issn0717-3644
dc.identifier.issn0718-221X
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/7946
dc.languagespa
dc.publisherMADERAS: CIENCIA Y TECNOLOGIA
dc.relation.uri10.4067/S0718-221X2015005000048
dc.rightsPUBLICADA
dc.subjectWOOD CELL-WALL.
dc.subjectNANOINDENTATIONS
dc.subjectMECHANICAL PROPERTIES
dc.subjectEUCALYPTUS NITENS
dc.subjectCRACKS
dc.subjectPROPIEDADES MECÁNICAS.
dc.subjectPARED CELULAR
dc.subjectNANOINDENTACIONES
dc.subjectGRIETAS INTERNAS
dc.subjectEUCALYPTUS NITENS
dc.titleMECHANICAL PROPERTIES CHARACTERIZATION TO SEGREGATE OF EUCALYPTUS NITENS FAMILIES BY NANOINDENTATION RELATED TO THE DEGREE OF CRACKING IN LOGS
dc.title.alternativeCARACTERIZACIÓN DE PROPIEDADES MECÁNICAS PARA SEGREGAR FAMILIAS DE EUCALYPTUS NITENS M POR NANO IDENTACIONES EN RELACIÓN AL GRADO DE AGRIETAMIENTO DE LAS TROZAS.
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
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