Email this article Studying the evolution of the power spectra of acoustic radiation during the destruction of a solid body
- Authors: Belikov V.T.1
-
Affiliations:
- Institute of Geophysics UrB RAS
- Issue: No 3 (2024)
- Pages: 3-13
- Section: Acoustic methods
- URL: https://journals.rcsi.science/0130-3082/article/view/255531
- DOI: https://doi.org/10.31857/S0130308224020011
- ID: 255531
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Abstract
When interpreting acoustic emission (AE) observation data, a model of a crack in the form of a cavity in the shape of an oblate ellipsoid of revolution was used. When the length of its semi-minor axis tends to zero, the ellipsoid models a circular disc-shaped crack. Using data from two amplitude-frequency spectra of AE recorded during the destruction of a concrete sample, distributions of the power of acoustic radiation along the lengths of the semi-axes of the ellipsoidal cavities were constructed. It is shown that by the time the second spectrum is recorded, a redistribution of acoustic radiation occurs in favor of a discrete set of growing main cracks with high semi-major axis lengths and a small opening value.
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About the authors
V. T. Belikov
Institute of Geophysics UrB RAS
Author for correspondence.
Email: belik2a@mail.ru
Russian Federation, 620016 Yekaterinburg, Amundsen st., 100
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Supplementary files
Supplementary Files
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1.
JATS XML
2.
Fig. 1. Amplitude-frequency spectra of AE at time points t1 and t2. The dotted line is the moment of time t1, the solid line is the moment of time t2.
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3.
Fig. 2. Distribution of relative values of acoustic radiation power Cr rel : b = 0.1 microns (a); b = 0.4 microns (b); b = 0.7 µm (c); b = 1 µm (d). The dashed line is the moment of time t1, the solid line is the moment of time t2.
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