Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(3), 199-206 | DOI: 10.11118/actaun201260030199

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.

Keywords: acoustic emission, wood, static bending test, finite element method
Grants and funding:

Authors would like to thank the Dakel ZD Rpety for acoustic emission equipment support. This study was supported by the Research plan No. MSM 6215648905, which is financed by the Ministry of Education, Youth and Sports of the Czech Republic.

Received: February 15, 2012; Published: August 28, 2013  Show citation

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Varner, D., Černý, M., Varner, M., & Fajman, M. (2012). Possible sources of acoustic emission during static bending test of wood specimens. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 60(3), 199-206. doi: 10.11118/actaun201260030199
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