Wood Physical Properties Mechanical Properties
Mostrando 25-36 de 96 artigos, teses e dissertações.
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25. Caracterização de painéis de partículas de média densidade feitos com resina poliuretana monocomponente à base de mamona
Resumo Dentre os fatores envolvidos na fabricação dos painéis destaca-se o tipo adesivo, em que o uso de novos pode resultar em boas propriedades aos materiais fabricados. Nesse contexto, esta pesquisa objetivou avaliar propriedades físicas e mecânicas de painéis de partículas fabricados com madeiras de Pinus sp. e de Eucalyptus grandis e unidas com r
Ambient. constr.. Publicado em: 2019-03
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26. Particle Sizes and Wood/Cement Ratio Effect on the Production of Vibro-compacted Composites
ABSTRACT The aim of this study was to evaluate the influence of particle size and the wood/cement ratio on the physical and mechanical properties of vibro-compacted wood-cement composites. The effects of three different particle sizes (diameter between 1.4-2.36 mm; 2.36-4 mm; and 4-9.56 mm) and wood:cement ratios of 1:2.75, 1:2 and 1:1.5 on wood-cement comp
Floresta Ambient.. Publicado em: 30/07/2018
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27. Evaluating the Effects of Removing Fines from Particleboards Manufactured from Amazonian Wood Residue
ABSTRACT The aim of this research was to evaluate the effects of removing fines on the physical and mechanical properties of high-density particleboard produced by mechanical processing of Caryocar villosum (pequiá), Tachigali myrmecophyla (tachi-preto) and Hymenolobium excelsum (angelim-da-mata) Amazonian woods. The panels were produced with nominal densi
Floresta Ambient.. Publicado em: 26/07/2018
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28. Properties of Young Guapuruvu (Schizolobium parahyba) Wood from a Forest Recovery Area
ABSTRACT Guapuruvu is one of the fastest growing Atlantic Forest species. It is also considered one of most important species in forest recovery areas, starting to compete with other individuals during the second stage of succession, as well as showing a capacity to be harvested and processed at this stage, after fulfilling its function as a pioneer. There
Floresta Ambient.. Publicado em: 28/05/2018
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29. Particleboard Panels Produced with Different Radial Positions of Pinus oocarpa Wood
ABSTRACT The aim of this study was to evaluate the effect of different radial regions of Pinus oocarpa wood on the physical and mechanical properties of particleboard panels. Three different radial regions (internal, intermediate and external) and the mixture (integral log) were assessed. Experimental panels were produced with a nominal density of 0.70 g/cm3
Floresta Ambient.. Publicado em: 01/02/2018
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30. Effects of Multiple Extrusions on Structure-property Performance of Natural Fiber High-density Polyethylene Biocomposites
Detailed analysis of the effects of multiple extrusions on physical, mechanical, micro-structural as well as dynamic mechanical thermal properties of natural fiber high-density polyethylene (HDPE) composites is reported. Composite materials containing HDPE, wood flour, and Maleic Anhydride polyethylene (MAPE) were manufactured and subjected to a recycling pr
Mat. Res.. Publicado em: 01/02/2018
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31. PHYSICAL-MECHANICAL CHARACTERIZATION OF Eucalyptus urophylla WOOD
ABSTRACT: Eucalyptus urophylla consists in a wood-producing species, which offers a natural multiple raw material of good quality for applications in rural and civil constructions. However, Eucalyptus urophylla still has a small utilization as building parts and elements, resulting from the possible ignorance and low diffusion of its structural possibilities
Eng. Agríc.. Publicado em: 2017-09
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32. FULL CHARACTERIZATION OF CALYCOPHYLLUM MULTIFLORUM WOOD SPECIE
ABSTRACT: Wood is a material that for years has been used by man for a variety of purposes, particularly in rural and civil constructions and furniture industry. The possibility of shortages of some wood species, the characterization of other unfamiliar species is an alternative source for use in civil and rural construction. This study aimed to determine, w
Eng. Agríc.. Publicado em: 2017-08
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33. Effect of natural ageing on the properties of recycled polypropylene/ethylene vinyl acetate/wood flour composites
ABSTRACT Wood flour composites main applications are represented by outdoor furnishing. Therefore, it is important to evaluate their behavior under natural ageing conditions. This work aims to investigate the natural ageing impact on the mechanical, physical, thermal e morphological properties of recycled polypropylene/ethylene vinyl acetate/wood flour compo
Matéria (Rio J.). Publicado em: 20/07/2017
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34. PHYSICO-MECHANICAL CHARACTERIZATION OF THE Anadenanthera colubrine WOOD SPECIE
ABSTRACT In Brazil, the characterization of wood is carried out in accordance with the premises established by ABNT NBR 7190standard; however, the determination of wood properties requires the use of equipment, which hinders the wood characterization for the construction professional. To circumvent this problem, the properties of wood strength and stiffness
Eng. Agríc.. Publicado em: 2017-04
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35. TIMBER BEAM REPAIR BASED ON POLYMER-CEMENTITIOUS BLENDS
ABSTRACT This study aims to manufacture and apply polymer-cementitious blends based on a combination of epoxy polymer and Ordinary Portland Cement (OPC) for timber beam repair. The material was used to repair timber beams of “Maçaranduba” (Manilkara sp.) and “Cedro doce” (Cedrella spp) wood species. A full factorial design was conducted to investiga
Eng. Agríc.. Publicado em: 2017-04
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36. The Effect of Post-Heat Treatment in MDF Panels
This study was to evaluate the effect of post-heat treatment on the physical and mechanical properties of MDF (Medium Density Fiberboard) panels. Commercial MDF panels were produced in Brazil using Pinus wood and urea-formaldehyde (UF) adhesive. The post-heat treatments were carried in a factorial 3 x 2 (three temperatures of heat treatment - 200, 225 and 25
Mat. Res.. Publicado em: 05/01/2017