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

VARNER, D., CERNÝ, M., VARNER, M., FAJMAN, M.: Possible sources of acoustic emission during static bending test of wood specimens. Acta univ. agric. et silvic. Mendel. Brun., 2012, LX, No. 3, pp. 199–206 The paper is dedicated to identifi cation of sources of acoustic emission generated during static bending test of wood specimen. Information on wood structure, wood failure behavior and computer-generated fi nite element method (FEM) simulation of static bending test were used to localize and estimate power of individual acoustic emission sources. Signifi cant 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 fi nal fracture of specimen. acoustic emission, wood, static bending test, fi nite element method