Avaliação da distribuição da densidade em MDF a partir da técnica da onda de ultra-som

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDa Silva, Sérgio Augusto Mello
dc.creatorGonçalves, Raquel
dc.date2014-05-27T11:22:29Z
dc.date2016-10-25T18:23:56Z
dc.date2014-05-27T11:22:29Z
dc.date2016-10-25T18:23:56Z
dc.date2007-06-01
dc.date.accessioned2017-04-06T01:25:09Z
dc.date.available2017-04-06T01:25:09Z
dc.identifierScientia Forestalis/Forest Sciences, n. 74, p. 19-26, 2007.
dc.identifier1413-9324
dc.identifierhttp://hdl.handle.net/11449/69701
dc.identifierhttp://acervodigital.unesp.br/handle/11449/69701
dc.identifierWOS:000208714500002
dc.identifier2-s2.0-34547397339.pdf
dc.identifier2-s2.0-34547397339
dc.identifierhttp://www.ipef.br/publicacoes/scientia/nr74/cap02.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/890907
dc.descriptionThe goal of this research was to determine the density distribution in medium density fiberboard (MDF), manufactured with polyurethane derived from castor oil using, ultrasonic wave technique. The equipment used in this test is Steinkamp BP7 with plan and exponential transducers, both with 45 kHz frequencies, located in several zones on the plate in order to determine wave ultrasonic velocity. The Pinus caribaea and Eucalyptus grandis fiberboard were manufactured in the quality control and products development laboratory of Duratex with 500 mm long, 500 mm large, 8 and 15 mm of thickness. Three MDF for each fiber specimen and thickness were fabricated, totalizing twelve plates tested. The MDF were produced with 5% polyurethane addition, in temperature of 160°C, tension press of 53 bars and addition of moisture content of 12%. For determination of fiberboard density, samples were extracted from the same zones where the wave ultrasonic velocity was determined. In this case, DAX-Ray equipment was used. Statistical analysis shows good agreement with wave ultrasonic velocity and the density profile, validating the application of non-destructive technique in order to determine the density profile of MDF's.
dc.languagepor
dc.relationScientia Forestalis/Forest Sciences
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectMedium density fiberboard
dc.subjectNon-destructive test
dc.subjectUltrasonic wave
dc.subjectDAX-Ray
dc.subjectMedium density fiberboard (MDF)
dc.subjectSteinkamp BP7
dc.subjectNondestructive examination
dc.subjectPaperboards
dc.subjectPolyurethanes
dc.subjectStatistical methods
dc.subjectTransducers
dc.subjectVegetable oils
dc.subjectDensity (specific gravity)
dc.subjectCastor Oil
dc.subjectDensity Measurement
dc.subjectFiber Boards
dc.titleAvaliação da distribuição da densidade em MDF a partir da técnica da onda de ultra-som
dc.typeOtro


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