Research on the Attenuation Characteristics of High-Frequency Elastic Waves in Rock-Like Material
In order to study the frequency-dependent attenuation characteristics of high-frequency elastic waves in rock-like materials, we conducted high-frequency elastic wave attenuation experiments on marble, granite, and red sandstone rods, and investigated the frequency dependence of the attenuation coef...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/19/6604 |
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| author | Xiling Liu Feng Xiong Qin Xie Xiukun Yang Daolong Chen Shaofeng Wang |
| author_facet | Xiling Liu Feng Xiong Qin Xie Xiukun Yang Daolong Chen Shaofeng Wang |
| author_sort | Xiling Liu |
| collection | DOAJ |
| description | In order to study the frequency-dependent attenuation characteristics of high-frequency elastic waves in rock-like materials, we conducted high-frequency elastic wave attenuation experiments on marble, granite, and red sandstone rods, and investigated the frequency dependence of the attenuation coefficient of high-frequency elastic waves and the frequency dependence of the attenuation of specific frequency components in elastic waves. The results show that, for the whole waveform packet of the elastic wave signal, the attenuation coefficient and the elastic wave frequency have an approximate power relationship, with the exponents of this power function being 0.408, 0.420, and 0.384 for marble, granite, and red sandstone, respectively, which are close to 1/2 the exponent value obtained theoretically by the Kelvin–Voigt viscoelastic model. However, when the specific frequency components are tracked during the elastic wave propagation, the exponents of the power relationship between the attenuation coefficient and frequency are 0.982, 1.523, and 0.860 for marble, granite, and red sandstone, respectively, which indicate that the relationship between the attenuation coefficient and frequency is rock-type dependent. Through the analysis of rock microstructure, we demonstrate that this rock-type-dependent relationship is mainly caused by the scattering attenuation component due to the small wavelength of the high-frequency elastic wave. Therefore, the scattering attenuation component may need to be considered when the Kelvin–Voigt model is used to describe high-frequency elastic wave attenuation in rock-like materials. The results of this research are of good help for further understanding the attenuation characteristics of high-frequency elastic waves in rock-like materials. |
| first_indexed | 2024-03-09T21:32:45Z |
| format | Article |
| id | doaj.art-bdd5f2e80cfb44ea84d009f0801fd1c1 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T21:32:45Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-bdd5f2e80cfb44ea84d009f0801fd1c12023-11-23T20:53:37ZengMDPI AGMaterials1996-19442022-09-011519660410.3390/ma15196604Research on the Attenuation Characteristics of High-Frequency Elastic Waves in Rock-Like MaterialXiling Liu0Feng Xiong1Qin Xie2Xiukun Yang3Daolong Chen4Shaofeng Wang5School of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaIn order to study the frequency-dependent attenuation characteristics of high-frequency elastic waves in rock-like materials, we conducted high-frequency elastic wave attenuation experiments on marble, granite, and red sandstone rods, and investigated the frequency dependence of the attenuation coefficient of high-frequency elastic waves and the frequency dependence of the attenuation of specific frequency components in elastic waves. The results show that, for the whole waveform packet of the elastic wave signal, the attenuation coefficient and the elastic wave frequency have an approximate power relationship, with the exponents of this power function being 0.408, 0.420, and 0.384 for marble, granite, and red sandstone, respectively, which are close to 1/2 the exponent value obtained theoretically by the Kelvin–Voigt viscoelastic model. However, when the specific frequency components are tracked during the elastic wave propagation, the exponents of the power relationship between the attenuation coefficient and frequency are 0.982, 1.523, and 0.860 for marble, granite, and red sandstone, respectively, which indicate that the relationship between the attenuation coefficient and frequency is rock-type dependent. Through the analysis of rock microstructure, we demonstrate that this rock-type-dependent relationship is mainly caused by the scattering attenuation component due to the small wavelength of the high-frequency elastic wave. Therefore, the scattering attenuation component may need to be considered when the Kelvin–Voigt model is used to describe high-frequency elastic wave attenuation in rock-like materials. The results of this research are of good help for further understanding the attenuation characteristics of high-frequency elastic waves in rock-like materials.https://www.mdpi.com/1996-1944/15/19/6604elastic wavefrequency dependent attenuationattenuation coefficientrock microstructures |
| spellingShingle | Xiling Liu Feng Xiong Qin Xie Xiukun Yang Daolong Chen Shaofeng Wang Research on the Attenuation Characteristics of High-Frequency Elastic Waves in Rock-Like Material Materials elastic wave frequency dependent attenuation attenuation coefficient rock microstructures |
| title | Research on the Attenuation Characteristics of High-Frequency Elastic Waves in Rock-Like Material |
| title_full | Research on the Attenuation Characteristics of High-Frequency Elastic Waves in Rock-Like Material |
| title_fullStr | Research on the Attenuation Characteristics of High-Frequency Elastic Waves in Rock-Like Material |
| title_full_unstemmed | Research on the Attenuation Characteristics of High-Frequency Elastic Waves in Rock-Like Material |
| title_short | Research on the Attenuation Characteristics of High-Frequency Elastic Waves in Rock-Like Material |
| title_sort | research on the attenuation characteristics of high frequency elastic waves in rock like material |
| topic | elastic wave frequency dependent attenuation attenuation coefficient rock microstructures |
| url | https://www.mdpi.com/1996-1944/15/19/6604 |
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