Caracterização físico-mecânica da madeira de jurema-preta (Mimosa tenuiflora (Willd.) Poir.) visando seu emprego na indústria madeireira do semiárido brasileiro.

Abstract

This research aimed to characterize the Mimosa tenuiflora (Willd.) Poir.) wood and verify the possibilities of its use on the wood industry of the Brazilian semi-arid region. To attend the objectives, five trees were cut in the Brazilian Caatinga in Paraiba State, at Lameirao Farm, located in territorial area of Santa Terezinha, Paraiba, Brazil. The samples were sawed, and the physical and mechanical properties were determinate according to Technical Standard Regulatory - NBR 7190 of Brazilian Standard Norms - ABNT. Tests to determine the strength and stiffness were performed with the use of Linear Variable Differential Transformers (LVDTs) and data acquisition system, which enables higher quality and accuracy of dada readings. The results indicate that Mimosa tenuiflora fits the resistance classification C 40, determined by Brazilian Standard Norms, that is superior to Nanilkara huberi and slightly below the Peltogyne sp. Woods. Mimosa tenuiflora density was superior to the Peltogyne sp. and Nanilkara huberi woods, being equivalent to Tabebuia serratifolia and Prosopis juliflora woods. The physical and mechanical properties of Mimosa tenuiflora indicate the technical feasibility of its use in structures, and in order to demonstrate its feasibility to produce furniture, a prototype of home furniture was made.