Módulo de rigidez del multimaterial madera-malla-adhesivo de Pinus pseudostrobus, Tabebuia rosea y Quercus scytophylla

Abstract

In the wood construction industry, standardized materials with clearly defined mechanical properties are required. By combining solid wooden plates with appropriate meshes, fabrics, and adhesives, wood is transformed into a multimaterial. The modulus of rigidity of wood and multimaterial is useful for calculating elements and connections where out-of-plane deformations occur due to shear stresses. The objective of the research was to quantify the density and dynamic modulus in statistically representative samples of P. pseudostrubus, T. rosea, and Q. scytophylla, and to compare these parameters with those obtained from specimens made of the multimaterial created with these species. Three groups of small solid wood test specimens were prepared, as well as three groups of wooden multimaterial with adhesive and mesh. Torsional vibration tests were conducted, the vibration frequencies were recorded, and the corresponding modulus of rigidity were calculated. For the three species, an increase in density and the modulus of rigidity of the multimaterial is observed compared to solid wood. Compared to solid wood, the variability of the modulus of rigidity is reduced in the case of multimaterial.