Speed of sound transmission as properties predictor of particleboards

Abstract

The use of sound speed transmission, measured parallel to the board surface, as a predictor of board quality was studied. The variables were: board density, resin content and closure time of the press. The level of association and dependence between the variables were determined through correlation analisis. Boards were made using Roble (Nothofagus obliqua) and Raulí (Nothofagus alpina) wood.
A high correlation between sound speed transmission, board density and adhesive content was determined. The high correlation between bending strength and sound speed allows its application as a predictor of this property. No relation between sound speed and internal bond was found.