Analysis and Processing of Acoustic Emission Signals Under Dynamic Loading of the Microstructure of Continuous Media

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F22%3A00010142" target="_blank" >RIV/46747885:24210/22:00010142 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/9926763" target="_blank" >https://ieeexplore.ieee.org/document/9926763</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ELNANO54667.2022.9926763" target="_blank" >10.1109/ELNANO54667.2022.9926763</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis and Processing of Acoustic Emission Signals Under Dynamic Loading of the Microstructure of Continuous Media

Popis výsledku v původním jazyce

The boundary problem of the propagation of acoustic emission signals at the conjugation of two continuous media is considered. A model of a two-layer continuous medium in the form of a chain of linear atoms connected by elastic bonds with a single-point developing defect is proposed. The force and displacement of the particles of the medium were chosen as the main variables. The solution of the boundary value problem in conjugate media using the Green‘s function and the Fourier transform is substantiated. It is shown that the energy spectrum of an acoustic emission is completely determined by the forc constants of materials and the forces initiating the appearance of acoustic emission signals. For a two-layer medium, a metal and a composite coating, significant differences were found in the nature of the acoustic emission signals arising in each material during bending. This feature makes it possible to separately identify and predict the state of each material in the associated environment. The presented solution of the equation of motion of a system of conjugated continuous media with the development of internal structural defects allows one to perform a spectral analysis of the differential operators of elastic energy and their expansion in terms of eigenvalues. Experimental verification of the proposed theoretical model of the energy spectrum of acoustic signals showed that the results of the study can be used to predict the degree of destruction of materials under loading.

Název v anglickém jazyce

Analysis and Processing of Acoustic Emission Signals Under Dynamic Loading of the Microstructure of Continuous Media

Popis výsledku anglicky

The boundary problem of the propagation of acoustic emission signals at the conjugation of two continuous media is considered. A model of a two-layer continuous medium in the form of a chain of linear atoms connected by elastic bonds with a single-point developing defect is proposed. The force and displacement of the particles of the medium were chosen as the main variables. The solution of the boundary value problem in conjugate media using the Green‘s function and the Fourier transform is substantiated. It is shown that the energy spectrum of an acoustic emission is completely determined by the forc constants of materials and the forces initiating the appearance of acoustic emission signals. For a two-layer medium, a metal and a composite coating, significant differences were found in the nature of the acoustic emission signals arising in each material during bending. This feature makes it possible to separately identify and predict the state of each material in the associated environment. The presented solution of the equation of motion of a system of conjugated continuous media with the development of internal structural defects allows one to perform a spectral analysis of the differential operators of elastic energy and their expansion in terms of eigenvalues. Experimental verification of the proposed theoretical model of the energy spectrum of acoustic signals showed that the results of the study can be used to predict the degree of destruction of materials under loading.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

2022 IEEE 41st International Conference on Electronics and Nanotechnology

ISBN

978-1-6654-6922-7

ISSN

2693-3535

e-ISSN

—

Počet stran výsledku

5

Strana od-do

566-570

Název nakladatele

Institute of Electrical and Electronics Engineers Inc.

Místo vydání

—

Místo konání akce

Kyjev

Datum konání akce

1. 1. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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