Prediction of the modulus of elasticity of Eucalyptus grandis through two nondestructive techniques

• Main Authors: Pedro Henrique Gonzalez de Cademartori, André Luiz Missio, Darci Alberto Gatto, Rafael Beltrame
• Format: Article
• Language: English
• Published: Universidade Federal Rural do Rio de Janeiro
• Series: Floresta e Ambiente
• Subjects: ultrasound; stress wave; wood technology
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872014000300010&lng=en&tlng=en

The present study aimed to estimate the modulus of elasticity (MOE) at static bending of Rose gum (Eucalyptus grandis) heartwood and sapwood through two nondestructive techniques: ultrasound and stress wave. Sixty samples of heartwood and sapwood were prepared. Nondestructive tests were performed using ultrasound and stress wave timer equipment, while destructive tests were carried out in a universal machine through static bending tests. The main results showed that the heartwood presented better behavior than the sapwood in the non-destructive tests. However, the best model was obtained considering both wood types through the ultrasonic technique. Therefore, stress wave and ultrasonic techniques could be employed to estimate the modulus of elasticity of Rose gum wood.