Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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SCALE FACTOR INFLUENCE ON THE ELECTRIC SIGNAL PARAMETERS AT ELASTIC PULSE EXCITATION OF THE CONCRETE

Fursa T.V. 1 Osipov K.Yu. 2 Chekhovskikh S.I. 1 Utsyn G.E. 3
1 National Research Tomsk Polytechnic University
2 V.E. Zuev Institute of atmospheric optics SB RAS
3 The Tomsk institute of radio electronics and electronic technics Tomsk
The experimental research results of the samples geometric sizes influence on the electric signal parameters at elastic pulse excitation of the concrete is presented in the current work. The experiments were carried out on the heavy concrete models which were represented by the cube 10x10x10 cm and beams sized with a 10x10 cm root and 20, 30, 40 cm length. It was established that increasing the length of model with constant root leads to the decreasing on 10-30% of electric response amplitude. The models length increasing leads to the moving of electric response main spectral maxima to the low frequency region and changing of the locations and amplitude rates of other significant peaks. It is shown the geometry size changing of a heavy concrete samples doesn’t lead to the significant changing in the maximum cross correlation coefficient between electric response spectra and damped harmonic vibrations spectra.