Avaliação das propriedades físico-mecânicas da madeira de três espécies amazônicas

Abstract

This study aimed to evaluate the physical and mechanical properties of wood three Amazonian species: Apuleia leiocarpa (garapeira); Cedrelinga catenaeformis (Cedar) and Nectandra cissiflora (Canelão). To this it was determined by the density and dimensional stability of the timber; It was assessed resistance to parallel compression and bending, and made the correlation between the strength and rigidity of the timber with the data obtained in non-destructive tests (ultrasound). The results showed that some of the mechanical properties of wood can be estimated by propagation of ultrasonic waves. The species with greater dimensional stability was C. catenaeformis. The A. leiocarpa showed better anisotropic factor, and the woods of C. catenaeformis and N. cissiflora were considered low quality. The highest density was found for the A. leiocarpa and less to C. catenaeformis. The timber A. leiocarpa presented the best set of physical and mechanical properties with a good mechanical strength and suitability for structural purposes.