Časovni potek deformacije obremenjenih lesnih plošč

diplomski projekt

Simon Avbreht (Author), Bojan Bučar (Reviewer), Sergej Medved (Mentor)

Abstract

Na trgu lahko najdemo številne lesne plošče, ki se uporabljajo tako v pohištvene kot tudi konstrukcijske namene. Večinoma se ti materiali uporabljajo daljše časovno obdobje, zato je pomembno poznavanje obnašanja materiala pri daljših časovnih obremenitvah, kjer je deformacija odvisna od vrste plošče oz. gradnikov, iz katerih je plošča narejena, vrste in deleža lepila, gostote, kakor tudi od sile, s katero je material obremenjen. Želeli smo ugotoviti vpliv vrste lesne plošče in njene zgradbe na časovno obremenitev- lezenje. Uporabili smo tri različne lesne plošče: iverno, vlakneno in konstrukcijsko ploščo. Plošče smo 4-točkovno obremenili v eksperimentalni napravi za določanje časovnih deformacij. Časovni potek deformacije smo ugotavljali tako na spodnji kot na zgornji strani. Deformacija je bila najmanjša pri konstrukcijski plošči. Deformacija ivernih in vlaknenih plošč je bila večja, vendar so bile razlike med njima manjše. Ugotovili smo tudi razlike med zgornjo in spodnjo stranjo.

Keywords

lesna plošča;iverna plošča;konstrukcijska plošča;vlaknena plošča;časovni potek deformacije;

Data

Language:	Slovenian
Year of publishing:	2012
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[S. Avbreht]
UDC:	630*862
COBISS:	2049929
Views:	985
Downloads:	289
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Time process of deformation loaded wood panels
Secondary abstract:	One can find numerous wooden panels on the market, which are used for furniture and construction purposes. Most often these materials are used over a long period of time which is why it is important to know the materials' behaviour at longer time loads, where the behaviour depends on the type or the material of the plates, the type and proportion of the glue, density, as well as the force with which the material is loaded. We determined the impact of the various types of wooden panels and their structures on the time load - creep. We used 3 different wooden panels: chipboard, fibreboard and construction panel. Panels were loaded on 4 points with an experimental device for determining the time of deformation. The time frame of the deformation was measured both at the bottom and the top side. Deformation was the smallest on the construction panel. The deformation of chip and fibre boards was higher, but the differences between them were smaller. We also found differences between the top and bottom side.
Secondary keywords:	wood-based panels;particleboard;MDF panel;deformation time process;
Type (COBISS):	Diploma project paper
Thesis comment:	Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Pages:	VII, 19 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;agriculture and related sciences and techniques;forestry;farming;wildlife exploitation;kmetijstvo ter sorodne vede in tehnologije;forestry;gozdarstvo;forest products and their utilization;gozdni proizvodi in njihova uporaba;
ID:	22218