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Czasopisma help

  1. 31 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

  2. 5 Acta Scientiarum Polonorum. Architectura

  3. 4 Folia Forestalia Polonica. Series B - Drzewnictwo

  4. 3 Drewno. Prace Naukowe. Doniesienia. Komunikaty

  5. 3 Roczniki Akademii Rolniczej w Poznaniu. Technologia Drewna

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Autorzy help

  1. 8 Kowaluk G.

  2. 5 Kociszewski M.

  3. 4 Noskowiak A.

  4. 4 Warmbier K.

  5. 3 Jablonski L.

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  1. 1 2022

  2. 4 2021

  3. 4 2020

  4. 4 2019

  5. 1 2017

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1
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Research on mechanical properties of birch plywood with special veneer lay-up schemes

100%
Lipinskis I., Spulle U.
Drewno. Prace Naukowe. Doniesienia. Komunikaty
|
2011
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tom 54
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nr 185
Plywood is a wood-based panel material laminated of veneers where the grain direction is perpendicular in adjacent layers. The use of plywood can be extended if there is a possibility to use special lay-up schemes designed to improve mechanical properties which depend on the grain direction in the outer plies. This report contains results of research whose purpose was to determinate bending strength and modulus of elasticity of birch plywood types with special veneer lay-up schemes and of different width, bending flatwise and edgewise. Two special plywood types, 28 mm thick Spec1 and 30 mm thick Spec3, with different veneer lay-up schemes were selected for bending properties determination tests according to standard EN 789. Specimens were tested when the face veneer direction was parallel and then perpendicular to the specimens’ longer axis. Moisture content and density were determined as well. This report contains the comparison of bending strength properties of special plywood specimen with different width and load direction. It was found that bending strength was significantly higher for narrower special plywood specimens, and bending strength of special plywood loaded edgewise was 4 % lower for Spec1 and 9.5 % lower for Spec3 than for flatwise loaded specimen of the same cross-sectional dimensions.
2
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Spruce timber bending strength for different loading modes

86%
Rohanova A.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2013
|
tom 84
3
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Content available

Impact of different lignocellulosic materials used in core of particleboard on modulus of elasticity and bending strength

86%
Frackowiak I., Fuczek D., Kowaluk G.
Drewno. Prace Naukowe. Doniesienia. Komunikaty
|
2008
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tom 51
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nr 180
5-14
4
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Effective methods to strengthen the bending reinforced concrete elements

86%
Gomon S., Romanyuk V., Ziatіuk Y., Marchuk V., Nalepa O.
Acta Scientiarum Polonorum. Architectura
|
2022
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tom 21
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nr 1
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Rc beams strengthened by Rc jacketing under load

86%
Blikharskyy Z.
Acta Scientiarum Polonorum. Architectura
|
2021
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tom 20
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nr 1
6

Influence of density and thickness on selected properties of MDF

86%
Klimczewski M., Nicewicz D., Monder S.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2012
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tom 78
7

Ultimate bending strength of massive and laminated beech wood below the influence of cyclic loading

86%
Gaff M.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2012
|
tom 78
8

Investigations of mechanical properties in bending of particleboard layers

86%
Wilczynski A., Kociszewski M., Warmbier K.
Folia Forestalia Polonica. Series B - Drzewnictwo
|
2004
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tom 35
9

Effect of loading direction on mechanical properties of wood-based panels in bending

86%
Kociszewski M., Tydryszewski K., Wilczynski M.
Folia Forestalia Polonica. Series B - Drzewnictwo
|
2003
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nr 34
10

Strength and stiffness of dowel corner joints - effect of joint dimensions

86%
Warmbier K., Wilczynski A.
Folia Forestalia Polonica. Series B - Drzewnictwo
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2000
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tom 31
11

Effect of joint dimensions on strength and stiffness of tenon joints

86%
Wilczynski A., Warmbier K.
Folia Forestalia Polonica. Series B - Drzewnictwo
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2003
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nr 34
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Compression strength and other mechanical properties of particleboards induced by density

72%
Jezo A., Kowaluk G.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2020
|
tom 110
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Selected properties of particleboard made of raspberry Rubus idaeus L. lignocellulosic particles

72%
Wronka A., Kowaluk G.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2019
|
tom 105
14
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Bending strenght of layered material based on wood and foamed PVC

72%
Slabejova G., Smidriakova M.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2013
|
tom 84
15
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The impact of crosshead speed on the strength of spruce wood (Picea abies L.)

72%
Dobrowolska E., Lichaczewska B., Pinchevska O.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2020
|
tom 109
16

The change of properties of aspen wood by mechanical treatment – by pressing

72%
Gaborik J., Dudas J.
Electronic Journal of Polish Agricultural Universities. Series Wood Technology
|
2006
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tom 09
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nr 3
17
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The influence of structure on selected properties of a lignocellulosic composite

72%
Sycz K., Kowaluk G.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2019
|
tom 106
18
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The assessment of mechanical properties of wood treated with ionic liquids

72%
Fojutowski A., Noskowiak A., Kot M., Kropacz A., Stangierska A.
Drewno. Prace Naukowe. Doniesienia. Komunikaty
|
2010
|
tom 53
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nr 184
The impregnation of wood with wood preservatives may have an influence on its physical and mechanical properties. The knowledge about the character of that influence is of great importance for characterisation of functional properties of wood and, as a consequence, determination of its use classes. The ionic liquids (ILs) of imidazolium tetrafluoroborates series, which for instance very well penetrate into Scots pine wood, are active against wood-destroying fungi and generally have a positive, although insignificant, influence on physical and mechanical properties of wood, especially on its resistance to colour change during exposure to light. However, various ILs may differ widely in that respect. Under POIG.01.03.01-30-074/08 project investigations were undertaken to clarify the influence of didecyldimethylammonium nitrite ([DDA][NO2]) and IL with didecyldimethylammonium cation and anion of herbicide character ([DDA][herbicide]) on selected physical and mechanical properties of Scots pine wood (Pinus sylvestris L.). The miniature sapwood samples were subjected to sorption with the ILs by vacuum method. The properties of the treated wood were compared with those of control wood, i.e. untreated wood, using twin specimens. The average retention of ILs in wood was on the level of 3.6kg/m3, 7.4kg/m3, and 18.2kg/m3. The tested ILs had only a very small influence, from -0.5% to +1.6%, on the compression strength of wood along the grain when oven-dry wood was tested. However, at equilibrium moisture content the compression strength along the grain, bending strength, and modulus of elasticity at bending of wood treated with ILs were distinctly lower, i.e. by 10%, 20% and 15% respectively. The equilibrium moisture content of wood treated with ILs was greater by 2-3% than that of control wood, which may be the reason for deterioration of wood mechanical properties. However, this speculation requires further investigations.
19
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Properties of black poplar wood (Populus nigra L.) in terms of structural applications

72%
Noskowiak A., Pajchrowski G., Szuminski G., Jablonski L.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2014
|
tom 86
20

Properties of modified veneers for 3D - forming

72%
Slabejova G., Smidriakova M.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2013
|
tom 81
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