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dc.contributor.authorBekhta, Pavlo
dc.contributor.authorPipíška, Tomáš
dc.contributor.authorGryc, Vladimír
dc.contributor.authorSedliačik, Ján
dc.contributor.authorKrál, Pavel
dc.contributor.authorRáheľ, Jozef
dc.contributor.authorVaněrek, Jan
dc.date.accessioned2023-04-29T00:03:11Z
dc.date.available2023-04-29T00:03:11Z
dc.date.issued2023
dc.identifier.issn1999-4907 Sherpa/RoMEO, JCR
dc.identifier.urihttps://repozitar.mendelu.cz/xmlui/handle/20.500.12698/1702
dc.description.abstractUkrainian companies mainly use birch in the manufacture of plywood, but species, such as black alder, are not yet widely used in the manufacture of plywood due to their poorer properties. It is well known that thermal compression is often used to improve the properties of solid wood. Good lay-up schemes of veneer can maximize the advantages and minimize the disadvantages of these wood species, and generally improve the utility value of the plywood. This research aimed to develop plywood panels with two wood species and two types of veneer treatments in order to evaluate the influences of different lay-up schemes on the properties of the plywood. Five-layer plywood panels were formed with 16 different lay-up schemes using birch (Betula verrucosa Ehrh.) (B) and black alder (Alnus glutinosa L.) (A) veneers, which were non-densified (N) and thermally densified (D). The different lay-up schemes were used to identify opportunities to improve the mechanical and physical properties of the plywood by replacing the birch veneer in the plywood structure with an alternative alder veneer. The veneer sheets were thermally densified in a laboratory hot press at a temperature of 180 oC and pressure of 2 MPa for 3 min. The conducted study showed that the bending strength, modulus of elasticity and shear strength of mixed-species plywood (BD-AN-AN-AN-BD) increased by up to 31.5%, 34.4% and 16.8%, respectively, in comparison to those properties of alder plywood from non-densified veneer (AN-AN-AN-AN-AN), by positioning alder non-densified veneers in the core layers and birch densified veneers in the outer layers. Moreover, the surface roughness of plywood panels with outer layers of birch veneer was lower than that of panels with outer layers of alder veneer. It was shown that non-treated alder veneer, despite exhibiting somewhat lower strength properties than birch veneer, could be successfully used with proper lay-up schemes in the veneer-based products industry.en
dc.format96
dc.publisherMDPI AG (Multidisciplinary Digital Publishing Institute-MDPI)
dc.relationEC/H2020/952314/Adaption strategies in forestry under global climate change impact/ASFORCLIC
dc.relation.ispartofForests
dc.relation.urihttps://doi.org/10.3390/f14010096
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectbirchen
dc.subjectblack alderen
dc.subjectthermal densificationen
dc.subjectplywood propertiesen
dc.subjectwood veneersen
dc.titleProperties of Plywood Panels Composed of Thermally Densified and Non-Densified Alder and Birch Veneersen
dc.typeJ_ČLÁNEK
dc.date.updated2023-04-29T00:03:11Z
dc.description.versionOA
local.identifier.doi10.3390/f14010096
local.identifier.scopus2-s2.0-85146737017
local.identifier.wos000915008900001
local.number1
local.volume14
local.identifier.obd43924131
local.identifier.e-issn1999-4907
dc.project.IDFW01010579
dc.project.IDInovativní konstrukce a technologie výroby masivního dřevěného panelu
dc.project.IDAdaption strategies in forestry under global climate change impact (ASFORCLIC)
dc.project.ID952314
dc.identifier.orcidPipíška, Tomáš 0000-0001-8096-4376
dc.identifier.orcidGryc, Vladimír 0000-0001-9632-9625
dc.identifier.orcidKrál, Pavel 0000-0001-7466-5185
dc.identifier.orcidRáheľ, Jozef 0000-0002-2850-8039
local.contributor.affiliationLDF
local.horizonH_2020


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Zobrazit minimální záznam

CC BY 4.0
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