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Mehano-sorptivni učinek v lesu = Mechano-sorptive effect in woodHouška, MladenMehano-sorptivni efekt uvrščamo med zelo zanimive, vendar še slabo pojasnjene fenomene v obnašanju lesa. Zato smo se pri naši raziskavi odločili, da zanj poiščemo najbolj značilne vzroke, nato pa ... skušamo ugotoviti, kateri so bistveni mehanizmi tega pojava in na katerem nivoju lesne sestave pretežno delujejo. Z natančnimi meritvami majhnih, čistih, upogibnih vzorcev smrekovega lesa različnih kategorij (juvenilnega, adultnega in kompresijskega) v natančno določeni spremenljivi klimi ter nato še z meritvami vlažnostnih gradientov v prerezu smo ugotovili mogoče vzroke, ki povzročajo nehano-sorptivni pojav. Bistveni povzročitelj je vlažnostni gradient, ki povzroča prehodne sorptivne napetosti. Dokazali smo tudi, da ima pri tem pojavu velik vpliv sestava celične stene oziroma kot vitja mikrofibrilov.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Let. 43, št. 5-6, 1997, str. 193-202)Type of material - article, component partPublish date - 1997Language - slovenian, englishCOBISS.SI-ID - 7391065
Author
Houška, Mladen
Topics
mehanika |
obnašanje lesa |
mehano-sorptivni učinek |
lezenje |
spremenljiva vlaga |
deformacije |
zreli les |
mladi les |
kompresijski les |
mechanics |
wood behaviour |
creep |
changeable climate conditions |
deformations |
mechano-sorption |
adult wood |
juvenile wood |
compression wood
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Houška, Mladen | 00959 |
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