Caracterização Físico-Mecânica da Madeira Jovem de Eucalyptus camaldulensis para Aplicação na Arquitetura Rural

Torres, Pablo Marcel de Arruda; Paes, Juarez Benigno; Nascimento, José Wallace Barbosa do; Brito, Flávia Maria Silva

doi:10.1590/2179-8087.016012

Cited by 8 publications

(7 citation statements)

References 7 publications

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“…The average compressive strength parallel to the grain (f c,0k ) was 78 MPa, close to the result obtained by Grobério and Lahr (77.5 MPa) [12] with the same wood specie and higher when compared with Mimosa tenuiflora (58.25 MPa) [13], Mimosa schomburgkii (64.7 MPa) [4], Toona ciliata (27 MPa) [14], Eucalyptus camaldulensis (25.3 MPa) [15] e Eucalyptus benthamii (37.34 MPa) [16].…”

Section: Resultssupporting

confidence: 85%

Determination of Physical and Mechanical Properties of Wood Specie Dinizia excelsa Ducke

Couto¹,

Aquino²,

Almeida³

et al. 2018

ijme

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Wood is a material, when compared with other materials applied in civil construction, displays several advantages such an elevated mechanical strength when related with its apparent density. The wood manufacturing industry has great representativeness in the Brazilian economy however, the irrational consumption of determined species brought damages to the forest, causing extinction of some species and consequently, rising wood prices in market. The characterization of unknown wood species presents an alternative for a more rational exploration and expand wood use in structural purpose, enabling the use of this species determining its properties. The study aimed to characterize 3 physical properties and 12 mechanical properties of Angelim vermelho (Dinizia excelsa Ducke.) based on Brazilian Standard ABNT NBR 7190. Twelve models were used for each test, totalizing 180 experimental results. The analysis of variance (ANOVA) handling the regression models will be used to predict the strength and stiffness as function of apparent density. The results presented on tests demonstrated compatible performance with common wood species used in civil construction, considered high strength wood and with adequate use in this activity. According the regression models, only three properties were considered significant with apparent density estimation.

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Section: Resultssupporting

confidence: 85%

Determination of Physical and Mechanical Properties of Wood Specie Dinizia excelsa Ducke

Couto¹,

Aquino²,

Almeida³

et al. 2018

ijme

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“…Torres et al (2016) [20] determined ρ b , ρ ap , f c0 and E c0 for Eucalyptus camaldulensis wood, resulting 0.47 g/cm³, 0.581 g/cm³, 25.31 MPa and 12,379 MPa, respectively. These results are lower than the ones determined for Eucalyptus umbra wood.…”

Section: Resultsmentioning

confidence: 99%

Properties of Eucalyptus umbra Wood for Timber Structures

Nogueira¹,

Almeida²,

Vasconcelos³

et al. 2018

ijme

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This study involved the study of physical and mechanical properties of Eucalyptus umbra wood for its use in timber structures. Two physical and fourteen mechanical properties tests were performed according to Brazilian code ABNT NBR 7190:1997. Two moisture contents were considered: above the Fiber Saturation Point (30%) and standardized point 12%. Decreasing the moisture content, this study presented an increase in eight mechanical properties. Oppositely, five mechanical properties presented decreasing of values, and one single variable persisted stable. But statistical perspective supported by the t-test, only three mechanical properties (f t90 , f H0 and W) increased significantly. According to results obtained in this study, it is possible to use Eucalyptus umbra wood as raw material for structures.

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“…Para a contração máxima, a madeira de jurema-preta teve baixos valores quando comparados ao Eucalyptus saligna, 16 anos (Oliveira & Silva, 2003), 7,67% (radial), 14,83% (tangencial) e 26,00% (volumétrica), Eucalyptus camaldulensis, entre 4 e 5 anos (Torres, 2008), 4,70% (radial), 6,91% (tangencial) e 13,76% (volumétrica) e a várias espécies de Eucalyptus, com 16 anos, Oliveira et al (2010), que variaram de 5,0% (Eucalyptus grandis) para 9,4% (Eucalyptus paniculata), direção radial; de 9,3% (Eucalyptus cloeziana) para 15,5% (Eucalyptus paniculata), tangencial; e de 15,9% (Eucalyptus grandis) para 27,2% (Eucalyptus paniculata) e para a madeira dos Eucalyptus saligna, Eucalyptus grandis e Eucalyptus dunii, 11 anos, Batista et al (2010), que variaram de 5,03%; 4,60% e 5,70% (radial); de 9,86%; 9,25% e 12,74% (tangencial); e 15,61, 14,10 e 18,71% (volumétrica), respectivamente.…”

Section: Retratibilidade Da Madeiraunclassified

Caracterização físico mecânica da madeira de jurema-preta (Mimosa tenuiflora) visando seu emprego na indústria moveleira

Rocha¹,

Paes

Miná

et al. 2015

Agraria

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RESUMOA pesquisa teve como objetivos a caracterização físico mecânica da madeira de jurema-preta (Mimosa tenuiflora (Willd.) Poir.) e a confecção de um móvel com a madeira em estudo para verificar suas características estéticas e de acabamento superficial. Para tanto, foram colhidas cinco árvores de jurema-preta na Caatinga do estado da Paraíba, na Fazenda Lameirão, localizada no município de Santa Terezinha -PB, confeccionados corpos de prova, e realizados ensaios físico mecânicos de acordo com a Associação Brasileira de Normas Técnicas. Foram realizados ensaios para determinação da umidade, densidades aparente e básica, retratibilidade, resistência e rigidez à compressão paralela às fibras. Para a aquisição dos dados foram empregados Transdutores de Deslocamento Linear (LVDTs). Os valores obtidos na pesquisa indicaram que a madeira de jurema-preta possui boa estabilidade dimensional e características de resistência e rigidez compatíveis para seu emprego em móveis e pequenas estruturas.Palavras-chave: Caatinga, mobiliário, qualidade da madeira Physical and mechanical characterization of Mimosa tenuiflora wood for employment in furniture industry ABSTRACTThe research aimed to obtain the physic mechanical characterization of Mimosa tenuiflora (Willd.) Poir. and manufacture a furniture with wood in study and to verify their aesthetic characteristics and superficial finishing. Thus, five trees of Mimosa tenuiflora had been harvested, in Brazilian Savanna (Caatinga) at Lameirão Farm, located in the municipality of Santa Terezinha, Paraíba state, Brazil, manufactured test samples and carried through physical-mechanical wood characterization in accordance with the Standard Brazilian. Assays for determination of basic and apparent densities and moisture, shrinkage and strength and rigidity to compression parallel to the fibers had been carried. For data acquisition was employed Linear Displacement Transducers (LVDTs). The values obtained in research indicated that the wood of Mimosa tenuiflora has good dimensional stability and strength and rigidity characteristics compatible for employ in furniture and small structures.

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Caracterização Físico-Mecânica da Madeira Jovem de Eucalyptus camaldulensis para Aplicação na Arquitetura Rural

Cited by 8 publications

References 7 publications

Determination of Physical and Mechanical Properties of Wood Specie Dinizia excelsa Ducke

Determination of Physical and Mechanical Properties of Wood Specie Dinizia excelsa Ducke

Properties of Eucalyptus umbra Wood for Timber Structures

Caracterização físico mecânica da madeira de jurema-preta (Mimosa tenuiflora) visando seu emprego na indústria moveleira

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