Embedment Parallel to the Grain Strength of the Schizolobium amazonicum Herb Wood Specie

Almeida, Diego Henrique de; Almeida, Tiago Hendrigo de; Pinheiro, Roberto Vasconcelos; Christofóro, André Luis; Lahr, Francisco Antônio Rocco

doi:10.5923/j.ijme.20170703.02

Cited by 1 publication

(1 citation statement)

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“…Characterization process follows the procedures of the Brazilian code ABNT NBR 7190:1997 "Timber Structures Design" in its annex B" Determination of Wood properties for Structure Design". So, this code prescribes procedures to determining of properties of wood and design manufacturing of Timber Structures, presenting great importance to the Brazilian wood sector [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Impact Strength in Dinamic Bending as a Function of the Strength in Static Bending of Wood

Silveira¹,

Almeida²,

Almeida³

et al. 2018

ijme

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Wood is a natural, renewable and abundant material in Brazilian territory. But its use in civil construction is still commonplace. When compared to materials such as steel and concrete, it has many advantages, such as its resistance to density ratio. Where it is possible to observe a high resistance, equivalent to concrete of high performance with a much smaller density. Due to the heterogeneity of the woods, very different behaviors may occur in response to the various requests. Thus, for a better use of its capacity is essential knowledge of its properties. Among them is impact strength in bending. Impact strength in bending knowledge is fundamental in structures that will be exposed to short-lived impact loads, such as bridges. But due to some factors this is not a mechanical property that is very accessible to most research centers. The objective of this research was to use linear, exponential, logarithmic and geometric regression models to verify if it is possible to obtain a relation between the resistance modulus in the static bending, which is more easily obtained, and the impact strength in bending values. Ten Brazilian wood species were selected and static bending and impact in bending tests were performed according to ABNT NBR 7190:1997. All tests were done in the Wood and Timber Structures Laboratory (LaMEM), in the Department of Structural Engineering of the Engineering School of São Carlos, University of São Paulo. According to the results and the statistical analysis performed, it was possible to conclude that the Strength in static bending does not seem to be a good estimator of the impact strength in bending of wood.

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Section: Introductionmentioning

confidence: 99%