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Upogibna trdnost in togost slojnatega furnirnega lesa (LVL) iz termično modificirane in nemodificirane bukovine = Bending strength and stiffness of laminated veneer lumber (LVL) made from thermally modified and unmodified beech veneerSaražin, Jaša ...Cilj raziskave je bil definirati in razviti lesni kompozit z majhnim presekom, ki bo lepljen pri sobni temperaturi in bo lahko uporabljen kot ojačitveni material v lesenih okenskih profilih velikih ... dimenzij. Na osnovi pregleda objav je bil kot najprimernejši kompozit izbran slojnat furnirni les (LVL). Izbran material za njegovo izdelavo je bil rezan 0,5 mm debel bukov (Fagus sylvatica L.) furnir, ki je bil zlepljen s poliuretanskim lepilom (Purbond HB 440) v 20 mm debel LVL. Ker je bil proučevan tudi učinek termične modifikacije, je bilo pol preizkušancev narejenih iz termično modificiranega furnirja, pol pa iz nemodificiranega. Upogibna trdnost in togost preizkušancev sta bili določeni s tritočkovnim upogibnim testom. Termično modificirani preizkušanci so dosegli 19 % nižjo upogibno trdnost kot nemodificirani, medtem ko se upogibni modul elastičnosti (togost) ni značilno spremenil. Povprečne upogibne trdnosti do 150 MPa so bile zadovoljive, upogibni moduli elastičnosti okoli 13 GPa pa so bili bistveno pod želenimi vrednostmi, kar je bilo pripisano izboru pretankega furnirja in lepljenju pri sobni temperaturi, ki ne omogoča zgoščevanja lepljencaSource: Les = Wood. - ISSN 0024-1067 (Letn. 66, št. 2, 2017, str. 29-36)Type of material - article, component part ; adult, seriousPublish date - 2017Language - slovenianCOBISS.SI-ID - 2846857
Author
Saražin, Jaša |
Šernek, Milan |
Humar, Miha |
Ugovšek, Aleš
Topics
bukev |
furnir |
modul elastičnosti |
termična modifikacija |
upogibna trdnost
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Saražin, Jaša | 39986 |
Šernek, Milan | 16382 |
Humar, Miha | 19106 |
Ugovšek, Aleš | 32016 |
Source: Personal bibliographies
and: SICRIS
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