Open AccessACOUSTIC EXPRESS ANALYSIS OF QUALITATIVE AND QUANTITATIVE COMPOSITION OF SOILS DURING CONSTRUCTION WORKS
Author(s) -
Sergey Evtushenko,
Viktoriya Lyepikhova,
Nadezhda Lyashenko,
Yur'evich Andrey
Publication year - 2021
Publication title -
stroitelʹstvo i arhitektura
Language(s) - English
Resource type - Journals
eISSN - 2500-1477
pISSN - 2308-0191
DOI - 10.29039/2308-0191-2021-9-4-51-55
Subject(s) - harmonics , timbre , composition (language) , signal (programming language) , quality (philosophy) , set (abstract data type) , acoustics , soil water , frequency domain , harmonic analysis , qualitative analysis , modal , spectral line , computer science , mathematics , environmental science , engineering , soil science , physics , chemistry , qualitative research , mathematical analysis , electrical engineering , social science , sociology , astronomy , art , philosophy , voltage , linguistics , visual arts , musical , quantum mechanics , programming language , polymer chemistry
An express analysis of the ecological state of the soil during construction works is proposed. The algorithm is considered, which is the first approximation for describing the quality of the soil mixture, serving to build a system of operational recognition of the component composition of the soil mixture and the percentage of its main components. It is based on the analysis of the forced acoustic emission signal in the frequency domain to obtain the Fourier spectrum. From the general spectrum of the signal, consisting of a set of basic and higher (timbre) harmonics, subspectrs of significant basic harmonics corresponding to certain elements of the soil mixture are distinguished. To isolate the sub-spectra, a sequence of modal harmonics is used. The composition of the set of modal harmonics determines the qualitative composition of the soil in the first approximation.