%0 Journal Article
%T NON-DESTRUCTIVE EVALUATION WOOD POLES USED IN ELECTRIC LINE IN THE METROPOLITAN REGION OF PORTO ALEGRE
%A Eduardo Schneid
%A Darci Alberto Gatto
%A Pedro Henrique Gonzalez de Cademartori
%A Leandro Gon£¿alves Hamm
%J Revista Ci¨ºncia da Madeira
%D 2011
%I Federal University of Pelotas
%X This study aimed to evaluate the efficiency of non-destructive method by the use of ultrasound to estimate the degradation caused by wood decay organisms on wood poles. Was made a visual evaluation by ASTM D3345 (1994) and ultrasonic evaluation with semi-direct transmission in longitudinal direction. For this, was used an ultrasound equipment and two pairs of two transducers types, a plane face and point-contact. The ultrasonic evaluations demonstrated that the utilization of point-contact transducers has the best adjustment of the regression equations between visual and ultrasonic evaluation. The coefficient of determination for this type of transducers was above 60%, demonstrating that the use of this method becomes an important and efficient tool.
%K ultrasound
%K pole inspection
%K face plane and point-contact transducers
%U http://www.ufpel.edu.br/revistas/index.php/cienciadamadeira/article/view/66/cienciadamadeirav2n1a66