Sound velocity and attenuation in bubbly gels measured by transmission experiments

Leroy, Valentin; Strybulevych, Anatoliy; Page, John H.; Scanlon, Martin G.

doi:10.1121/1.2875420

Cited by 109 publications

(86 citation statements)

References 23 publications

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“…1. Similarly to [8], a multilayered object consisting of two identical layers of polycarbonate of a thickness of 6 . 1…”

Section: Resultsmentioning

confidence: 99%

“…The main aspects of the mechanics and thermophysics of bubbles and bubble liquids are presented in [4][5][6]. Various results of theoretical and experimental studies of the dynamics of acoustic waves in bubble media, including media containing bubble layers, are presented in [7][8][9][10][11][12][13][14][15][16][17][18]. Experimental work [11] presents the results of distortion of an acoustic signal when it falls along the normal to a flat sample consisting of two layers of polycarbonate and a layer containing an industrial gel with polydisperse bubbles.…”

Section: Introductionmentioning

confidence: 99%

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Interaction acoustic waves with a layered structure containing layer of bubbly liquid

Gubaidullin

Nikiforov

2018

MATEC Web Conf.

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Abstract.The results of a theoretical study of the effect of a bubble layer on the propagation of acoustic waves through a thin three-layered barrier at various angles of incidence are presented. The barrier consists of a layer of gel with polydisperse air bubbles bounded by layers of polycarbonate. It is shown that the presence of polydisperse air bubbles in the gel layer significantly changes the transmission and reflection of the acoustic signal when it interacts with such an obstacle for frequencies close to the resonant frequency of natural oscillations of the bubbles. The frequency range is identified where the angle of incidence has little effect on the reflection and transmission coefficients of acoustic waves.

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“…1. Similarly to [8], a multilayered object consisting of two identical layers of polycarbonate of a thickness of 6 . 1…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interaction acoustic waves with a layered structure containing layer of bubbly liquid

Gubaidullin

Nikiforov

2018

MATEC Web Conf.

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“…As documented [1,2,3], the bubbles can reach as much as 10 meters beneath sea surface and the void fraction of bubbles in water can reach as high as 10 -3 . The presence of bubbles will significantly change the properties of bubbly water, and profoundly impact the sound propagation in bubbly water because that its scattering section is much larger than its geometric section.…”

Section: Introductionmentioning

confidence: 99%

The estimation of bubble-size spectra and its error analysis

Teng¹,

Huang²,

Fan³

2015

Proceedings of the 2015 International Industrial Informatics and Computer Engineering Conference

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Abstract. The issues of bubble-size spectra estimation were researched using the bubble resonance theory and an iterative approximation, in order to further understanding the performance of the two approaches for determining bubble-size spectra, the estimation accuracy of four bubble-size spectra models have been analyzed. It comes out that the bubbles with medium range of bubble-size spectra can be precisely determined using the two approaches, however, the bubbles distributed at the two-end of bubble-size spectra have poor performance. The iterative approach ,by which the mean of bubble-size spectra estimation error less than 3%,is significantly better for estimating bubble-size spectra than the bubble resonance, by which the mean of bubble-size spectra estimation error as much as 20%, meanwhile the iterative approach with smaller variation of the estimation error. Therefore the iterative approach has a better accuracy for determining bubble-size spectra than the resonance.

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“…However, LRAM constitute a promising class of acoustic materials since their unique properties are not intrinsically associated with any periodic order at the wavelength scale, contrary to SC, but to the resonant nature of their subwavelength microstructure. This permits to obtain pronounced effects using extremely thin samples compared to the wavelength, 7,8 even using a single layer of resonators, [12][13][14][15] so to foresee compact acoustical devices. This justifies further research efforts on LRAM.…”

Section: Introductionmentioning

confidence: 99%

“…20 On the one hand, the acoustic properties of air bubbles and of bubbly media are rather well documented, 26,27 and the resonant behavior of micrometer-sized air bubbles has already been exploited at frequencies of the order of the MHz. 15 On the other hand, although core-shell particles have demonstrated their efficiency in the audible frequency range 7 and have been the subject of mechanical 28 and acoustical modelings, 20,29 neither their downscaling nor the effect of dissipation on their resonance has been studied. This is precisely the purpose of this work, which exploits the mechanical model of core-shell resonator proposed in Ref.…”

Section: Introductionmentioning

confidence: 99%

Constraints on the design of core-shell resonators of locally resonant acoustic metamaterials

2012

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. Constraints on the design of core-shell resonators of locally resonant acoustic metamaterials. Physical Review B : Condensed matter and materials physics, American Physical Society, 2012, 86 (18) We perform a parametric study of the analytic model of Liu et al. [Z. Liu et al., Phys. Rev. B 71, 014103 (2005)] describing the mechanical response of a core-shell particle to an acoustic excitation in order to help in selecting the constitutive materials and in designing innovative processes of fabrication of downsized core-shell resonators, which are key constituents of locally resonant acoustic metamaterials. We show that the value of the first Lamé coefficient of the material constituting the shell has no marked influence on the value of the resonance frequency of the core-shell resonator, that is, it does not necessarily need to be small for satisfying the condition of subwavelength resonator dimension at resonance. Moreover, we show that the larger the density contrast between the core and the shell and the thinner the shell, the broader is the frequency band over which the effective density of the resonator suspension is negative, but that it is practically useless to decrease the dimensionless shell thickness below 0.6. Finally, we show that the dissipation is also less perceptible the thinner is the shell and the larger is the density contrast. The effect of the density contrast between the core and the shell and of the dissipation on the resonance width are explained by comparing with the harmonic oscillator and the mass-in-mass 1D lattice.

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Sound velocity and attenuation in bubbly gels measured by transmission experiments

Cited by 109 publications

References 23 publications

Interaction acoustic waves with a layered structure containing layer of bubbly liquid

Interaction acoustic waves with a layered structure containing layer of bubbly liquid

The estimation of bubble-size spectra and its error analysis

Constraints on the design of core-shell resonators of locally resonant acoustic metamaterials

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