Uso da técnica de excitação por impulso (TEI) para a caracterização da rigidez da madeira de Eucalyptus grandis de 10 anos da região de Itapeva/SP

• Autor(a) principal: Lima Junior, Mauri Pedroso de [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/157040; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2018-08-30/000906703.pdf
• topic: Madeira - Testes; Eucalyptus grandis; Testes não-destrutivos; Elasticidade; Wood- Testing

Wood is a natural material which has great variability in their mechanical properties and their use is appropriate when it is sorted correctly. The main objective of this study was to analyze the effectiveness of the impulse excitation technique (TEI) to characterize the stiffness of Eucalyptus grandis 10 years old, in three different heights, the Itapeva / SP region. For characterization were used for non-destructive testing methods Excitation Impulse, using equipment Sonelastic® PC Based Technology and destructive flexure. The mean value for the modulus of elasticity in bending was 16.4 GPa and 16.6 GPa dynamics. The average values for modulus of elasticity in static bending were equal to 14.8 GPa at the time A, 17, 9 GPa at the time B and the time C 17.0 GPa (3, 6 and 9 meters) from the bottom, where it follows that the greater the height of the largest tree corresponding modulus of elasticity. The equation of correlation between MS and Ed found was 0,743Ed MS = + 4.0983, with its coefficient of determination R² = 0.85. It is concluded that the Excitation Technique Impulse is effective for characterizing rigidity, demonstrating great cost / benefit and speed parts classification and an increase in the value of lumber