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Vpliv dielektričnih lastnosti lepila in lesa na selektivnost VF segrevanja : diplomsko delo (univerzitetni študij) = The effect of dielectric properties of adhesive and wood on HF heating selectivity : graduation thesis (university studies)Kranjc, Matija, 1981-Raziskovali smo vpliv dielektričnih lastnosti lepila in lesa na selektivnost segrevanja preskušanca. Eksperimentalni del je potekal v 2 fazah. Najprej smo izmerili dielektrične lastnosti tekočega PVA ... lepila in furnirja bukve (Fagus sylvatica L.). Pri lepilu smo ugotavljali odvisnost dielektričnih lastnosti od temperature (22-80 °C) in frekvence (79,4 kHz-25,1 MHz), pri lesu pa samo odvisnost od frekvence na enakem območju kot pri lepilu. Meritve smo opravili z napravo Agilent 4285A Precision LCR Meter in pripadajočima sondama za merjenje dielektričnih lastnosti. V drugi fazi smo pripravili preskušance in jih v stiskalnici segrevali na posreden (klasično) in neposreden (VF) način. Med segrevanjem smo ugotavljali vpliv časa segrevanja na spreminjanje in porazdelitev temperature znotraj lepljenca. Ugotovili smo, da dielektrična vrednost in izgubni faktor lepila naraščata z naraščajočo temperaturo. Lepilo ima bistveno višje dielektrične lastnosti kot les, zato se je lepilni spoj v polju VF segreval hitreje kot les. Razlike v segrevanju so bile bolj očitne v začetni fazi segrevanja. V primerjavi hitrosti neposrednega in posrednega segrevanja nismo ugotovili bistvenih razlik.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [M. Kranjc], 2006Language - slovenianCOBISS.SI-ID - 1445001
Author
Kranjc, Matija, 1981-
Other authors
Šernek, Milan |
Resnik, Jože, 1942-
Topics
les |
tekoče PVA lepilo |
dielektrične lastnosti |
visoka frekvenca |
segrevanje |
selektivnost |
wood |
liquid PVA adhesive |
dielectric properties |
high frequency |
heating |
selectivity
Library/institution |
City | Acronym | For loan | Other holdings |
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BF, Department of Wood Science and Technology, Lj. | Ljubljana | BFLES |
reading room 1 cop.
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Shelf entry
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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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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Kranjc, Matija, 1981- | 30737 |
Šernek, Milan | 16382 |
Resnik, Jože, 1942- | 06324 |
Source: Personal bibliographies
and: SICRIS
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