Wood NDT-2000 Session VI.: Microwave and Miscellaneous
Evaluation of the Viscoelastic Properties of Wood
J.Buchar,P. Horácek, I.Krivanek and L. Slonek Faculty of Forestry and wood science, Mendel University of Agriculture and Forestry Brno, Zemedelska 3, 613 00 Brno, Czech Republic.
ABSTRACT
The results of the evaluation of viscoelastic properties of wood are presented. These properties have been obtained from the experiments made by the Hopkinson Split Bar Technique (HSBT) . This method uses a penny shaped specimens which are inserted between two elastic bar. During the experiment the elastic waves incident on the specimen and reflected and transmitted by the specimen are recorded. The frequency analysis of these waves enables to obtain a transfer function. This function can be also obtained from a model of the specimen as a viscoelastic body. In the given paper this procedure is given and subsequently used for the evaluation of viscoelastic properties of some wood species.
Publication Source: Proceedings of the 12th International Symposium on Nondestructive Testing of Wood University of Western Hungary, Sopron, 13-15 September 2000, ISBN 963 7180 88 5 Publisher: University of Western Hungary, H 9400 Sopron, P.O.Box 132, FAX: +36 99 311 103
