Two Different Loading Directions to Determine the Shear and Longitudinal Modulus of Elasticity
International Journal of Materials Science and Applications
Volume 8, Issue 2, March 2019, Pages: 30-34
Received: May 7, 2019;
Accepted: Jun. 6, 2019;
Published: Jul. 4, 2019
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Edson Fernando Castanheira Rodrigues, School of Civil Engineering, University of Uberaba, Uberaba, Brazil
André Luis Christoforo, Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil
The large-scale abundance of wood in Brazil combined with the advantages of its use stimulate many studies to be encouraged in order to make use of this raw material in a more optimized and adequate form. Compared with concrete and steel, wood presents an excellent relation between mechanical strength and its mass, beauty, low energy consumption for its processing, good thermal insulation and easy workability. Objectifying the best use of wood, this work proposes that the equivalence between longitudinal and transversal modulus of elasticity values with radial (ELR; GLT) and tangential load application (ELT; GLR) in the 3 and 4-point bending tests used for their determinations. The test of equivalence used in the analysis of the results for the modulus of elasticity was the Tukey’s test, by which the statistical equivalence between values of longitudinal (ELR x ELT) and transversal (GLT x GLR) modulus of elasticity with the radial and tangential load application, respectively. It was concluded that for the species of the hardwood group: Peroba Rosa (Aspidosperma polyneuron) with 35 specimens, Eucalyptus Tereticornis (Eucalyptus tereticornis) with 33 specimens, Jatobá (Hymenaea courbaril) with 28 specimens and Canafístula Peltophorum dubium) with 12 test specimens, tested in this work, there was no significant influence of the direction change of the loads on the values of the calculated modulus of elasticity.
Edson Fernando Castanheira Rodrigues,
André Luis Christoforo,
Two Different Loading Directions to Determine the Shear and Longitudinal Modulus of Elasticity, International Journal of Materials Science and Applications.
Vol. 8, No. 2,
2019, pp. 30-34.
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