Evaluating a Test Parameter in Static Bending for Pinus sp. Wood

Elen Aparecida Martines Morales; Helder Kenzo Kondo; Juliana Cortez Barbosa; Cristiane Inácio de Campos; Francisco Antonio Rocco Lahr; André Luis Christoforo

doi:10.4028/www.scientific.net/AMR.1025-1026.196

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1025-1026Evaluating a Test Parameter in Static Bending for...

Evaluating a Test Parameter in Static Bending for Pinus sp. Wood

Abstract:

Abstract. The study aimed to analyze the longitudinal modulus of elasticity (E_m), based on static bending tests, in different spans and confirm that it’s necessary adopt as 21 the ratio between span and height of the cross section of the specimen to turn no significant the influence of shear stress on vertical deflection. So, simplified equation to determine E_m can be employed. Specimens of Pinus elliottii var. elliottii and Pinus elliottii var. elliottii × Pinus cariabeae hondurensis (hybrid), came from Itapeva region, São Paulo State, Brazil, were considered. Bending tests were conducted in Labs of Experimental Campus Itapeva, UNESP, adapting recommendations of Brazilian Code ABNT NBR 7190. Twelve specimens of each species were tested. The trend lines for the plotted graphics showed clearly a nonlinear behavior until the neighborhood of ratio 21 and no expressive variations after this point, confirming that normative recommendations are correct.

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Periodical:

Advanced Materials Research (Volumes 1025-1026)

Pages:

196-199

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1025-1026.196

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Online since:

September 2014

Authors:

Elen Aparecida Martines Morales*, Helder Kenzo Kondo, Juliana Cortez Barbosa, Cristiane Inácio de Campos, Francisco Antonio Rocco Lahr, André Luis Christoforo

Keywords:

Coniferous, Static Bending Tests, Stiffness Properties of Wood

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References

[1] F.A.R. Lahr: On the determination of elastic properties of wood. EESC. USP Press, (1983).

Google Scholar

[2] A.L. Zangiácomo, F.A.R. Lahr: Proc. XI Brazilian Meeting on Wood and Wooden Structures, (2008), p.9.

Google Scholar

[3] Brazilian Association of Technical Standards: NBR 7190 Design of Wood Structures. ABNT Press, (1997).

Google Scholar

[4] French Association of Technical Standards: AFNOR B 51- 016 Wood Test methods. Impact or Static Bending Testing, AFNOR Press, (1987).

Google Scholar

[5] American Society for Testing and Materials: ASTM D-143. Standard methods of testing small clear specimens of timber. ASTM Press, (1982).

Google Scholar

[6] Panamerican Association of Technical Standards: COPANT R 555 Standard methods of Static Bending Test, COPANT Press, (1973).

Google Scholar

[7] International Organization for Standardization: ISO 3349 Wood Test methods. Determination of modulus of elasticity in static bending, ISO Press, (1975).

Google Scholar

[8] European Committee for Standardization: EN 408 Timber structures. Structural timber and glued laminated timber - Determination of some physical and mechanical properties, CEN Press, (1995).

DOI: 10.3403/30159970

Google Scholar

[9] A.L. Christoforo, J.C. Molina, T.H. Panzera, D.H. Almeida, S.L.M. Ribeiro Filho, R. M. Scaliante and F.A. Rocco Lahr: Rev. Árvore, Vol. 37, No. 5 (2013), p.981.

DOI: 10.1590/s0100-67622013000500020

Google Scholar

[10] A.L. Christoforo, T.H. Panzera, D.A.L. Silva, J. Fiorelli and F.A.R. Lahr: Int. J. Mater. Eng. Vol. 4, No. 1 (2014), p.31.

Google Scholar

[11] A.L. Christoforo, T.H. Panzera, F.B. Batista, P.H. Borges, F.A.R. Lahr and C.F. Franco: Eng. Agríc. Vol. 31, No. 6 (2011), p.1219.

DOI: 10.1590/s0100-69162011000600019

Google Scholar

[12] A.L. Christoforo, T.H. Panzera, C.C. Neto, M.A. Demarzo, S.L.M. Ribeiro Filho, L.E. Toniolo, R. Amstalden and F.A.R. Lahr: Eng. Agríc. Vol. 34, No. 1 (2014), p.167.

DOI: 10.1590/s0100-69162014000100016

Google Scholar