• Home
  • UCSC journals portal
  • ANID repository
  • UCSC Thesis Repository
  • English
  • Español
  • Log In
    Have you forgotten your password?
  1. Home
  2. Productividad Científica
  3. Publicaciones Científicas
  4. Non-Destructive assessment of the dynamic elasticity modulus of Eucalyptus nitens timber boards
 
Options
Non-Destructive assessment of the dynamic elasticity modulus of Eucalyptus nitens timber boards
Dr. Oyarzo-Vera, Claudio 
Facultad de Ingeniería 
Opazo-Vega, Alexander
Rosales-Garcés, Víctor
10.3390/ma14020269
Materials
2021
Eucalyptus nitens is a fast-growing wood species with a relevant presence in countries like Australia and Chile. The sustainable construction goals have driven the search of structural applications for Eucalyptus nitens; however, this process has been complicated due to the defects usually presented in these timber boards. This study aims to evaluate the dynamic elasticity modulus(Exd) of Eucalyptus nitens timber boards through non-destructive vibration-based tests. Thirty-six timber boards with different levels of knots and cracks were instrumented and tested in a simply supported condition by measuring longitudinal and transverse vibrations. In the first stage, the Exd was calculated globally through simplified normative formulas. Then, in a second stage, the local variability of the Exd was estimated using operational modal analysis (OMA), finite element numerical simulations (FEM), and regional sensitivity analysis (RSA). The positive correlation found between the global static modulus of elasticity and Exd suggests that non-destructive techniques could be used as a reliable and fast alternative for the assessment of bending stiffness. Finally, the proposed method to estimate the local variability of Exdt based on the combination of OMA, FEM,and RSA techniques was useful to improve the structural selection process of timber boards forlightweight social housing floors.
Thumbnail Image
Download
Name

materials-14-00269-v2.pdf

Size

5.65 MB

Format

Checksum
Hardwoods
Operational Modal analysis
Model updating
Regional sensitivity analysis
Ciencias físicas
Ingeniería de materiales
Ciencias químicas
Historial de mejoras
Proyecto financiado por: