Classification of lumber of Eucalyptus using non-destructive tests

• Autor(a) principal: Ballarin, Adriano Wagner [UNESP]
• Data de Publicação: 2008
• Outros Autores: Nogueira, Marcelo, Lima, José Tarcísio, Palma, Hernando Alfonso Lara [UNESP]
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/70851
• topic: Classification; Dimension lumber; Eucalyptus; Non-destructive evaluation; Sawn wood; Clones of Eucalyptus; Dimension lumbers; Eucalyptus plantations; Genetic materials; Minas Gerais; Non destructive; Non destructive evaluation; Non-destructive test; Parallel to grain; Sawnwoods; Static bending; Strength class; Stress wave; Structural dimensions; Transverse vibrations; Wave velocity; Wooden structure; Lumber; Nondestructive examination; Timber; Wooden buildings; Classification (of information)

Classification and standardization of the sawn wood is a usual activity, developed by countries that come as great consumers of this material. Brazil does not practice the classification of sawn wood. This work had the main objective of evaluating the sensibility of most common non-destructive tests in the classification of dimension lumber from fast grown Eucalyptus plantation. Wood was obtained from genetic material cultivated at Minas Gerais State, Brazil. 296 beams of structural dimensions (6 cm × 12 cm × 280 cm) from 10 different clones of Eucalyptus were sampled. Beams were non-destructively (stress wave, ultrasound and transverse vibration) and destructively (static bending and compression parallel to grain) tested. Non-destructive results showed sensibility in the classification of structural dimension lumber, being possible to establish wave velocity intervals that attend to the main strength classes reported by Wooden Structures Brazilian Code.