Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60, 199-206

https://doi.org/10.11118/actaun201260030199
Published online 2013-08-28

Possible sources of acoustic emission during static bending test of wood specimens

David Varner, Michal Černý, Miroslav Varner, Martin Fajman

Ústav techniky a automobilové dopravy, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika

The paper is dedicated to identification of sources of acoustic emission generated during static bending test of wood specimen. Information on wood structure, wood failure behavior and computer-generated finite element method (FEM) simulation of static bending test were used to localize and estimate power of individual acoustic emission sources. Significant acoustic emission sources are expected in the specimen in two areas: under the upper central support (during the entire bending test run) and in the tension portion of the specimen at the centre of lower baseline (at the fracture/destruction time). Strong acoustic emission sources were registered in tension portion of the specimen in direct connection with final fracture of specimen.

References

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