Viscoelastic relaxation in fluids

Бадмаев, Б. Б.; Дамдинов, Б. Б.; Дембелова, Т. С.

doi:10.3103/s1062873815100044

Cited by 7 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Based on this observation, we hypothesized an existence of a molecular ordering close to the solid quartz surface, in the form of molecular clusters, which tends to be destroyed under increasing of deformation. We also found a liquid structuring at the small amplitude of shear deformation, which was reported previously [10]. Some researchers measure shear wave velocities in liquids and calculate shear moduli of liquids.…”

Section: Resultssupporting

confidence: 88%

Mechanical Properties of Viscous Liquids and Nanosuspensions

Дамдинов

Дембелова

Baloshin

et al. 2018

SSP

View full text Add to dashboard Cite

Following the fundamental work by Bazaron, Bulgadaev and Derjaguin [6] on the observation of shear elasticity of low viscous liquids, we build on this study by examining viscous liquids, polymers and suspensions of nanoparticles. In this paper, we review our past and current efforts in these areas. The mechanical properties of liquids, polymers and nanosuspensions have been studied at relatively low frequencies of 105 Hz. The real and imaginary shear moduli of these samples were obtained on equipment using the acoustic resonance technique. It was shown that the shear modulus and viscosity decreases with increasing shear deformation. The behavior of viscoelastic fluids near surfaces is similar to that of colloidal and polymer suspensions, suggesting that the liquid component is determined by the mechanical response of suspensions.

show abstract

Section: Resultssupporting

confidence: 88%

Mechanical Properties of Viscous Liquids and Nanosuspensions

Дамдинов

Дембелова

Baloshin

et al. 2018

SSP

View full text Add to dashboard Cite

show abstract

“…Из [5] (G 3•10 6 Па), диэтиленгликоль и вазелиновое масло в диапазоне частот 40-74 кГц [6] (G 0,51-1,22•10 5 Па и G 1,13-1,36•10 5 Па), архитектурный пластилин [12] (Z t 0,59•10 6 Па с/м).…”

Section: таблица 2 / Tableunclassified

“…Имеет место недостаточная точность измерений для сильно поглощающих сред, а также для сред с низким значением сдвигового импеданса. В литературе имеются результаты оценки сдвиговых вязкоупругих свойств жид-ρ костей в области низких частот, основанные на измерении собственной частоты и добротности пьезокварцевого резонатора [5,6], на измерении резонанса крутильных колебаний трубки, заполненной жидкостью [7,8], на измерении сдвиговых гармонических деформаций методом ротационной реометрии [9], анализе амплитудных и фазовых характеристик продольных ультразвуковых колебаний [10].…”

Section: Introductionunclassified

Technique and Device for the Experimental Estimation of the Acoustic Impedance of Viscoelastic Medium

Муравьева¹,

Муравьев²,

Злобин³

et al. 2017

Prib. metody izmer.

View full text Add to dashboard Cite

Measuring the characteristics of process fluids allows us to evaluate their quality, biological tissues – to differentiate healthy tissues and tissues with pathologies. Measuring the characteristics of process fluids allows us to evaluate their quality, biological tissues – to differentiate healthy tissues and tissues with pathologies. One of the complex acoustic parameters is the impedance, which allows one to fully evaluate the characteristics of viscoelastic media. Most of impedance methods of measurements require using two or more reference media and the availability of calibrated acoustic transducers. The aim of this work ware introduced a methods and construction for the experimental evaluation of the longitudinal and shear impedance of viscoelastic media based on measuring the parameters of the amplitude-frequency characteristics and calculating the elements of the electric circuit for replacing the piezoelectric element which vibrating in the test medium.The paper introduces a methods and construction of the experimental evaluation of the impedances of viscoelastic media. The suggested methods is allowed measuring longitudinal and shear impedances and determining velocities of longitudinal and transverse ultrasonic waves and the values of the elastic moduli of viscoelastic media, including in various aggregate states. The technique is fairly simple to implement and can be reproduced using simple laboratory equipment.The obtained values of the acoustic impedances of the investigated media are in satisfactory agreement with their reference data. In contrast to the known methods for determining the acoustic impedance, the developed technique allows us to estimate with sufficient accuracy the parameter of the shear impedance of viscoelastic media that is difficult to measure at the frequencies of the megahertz range, which determines the shear modulus of the material and characterizes its resistance to shear deformations. The results of the implementation of the developed technique for the estimation of acoustic parameters for a number of media with zero shear elasticity (alcohol, acetone) and viscoelastic media (glycerin, architectural clay, silicone sealant and glue МР-55 before and after polymerization) are presented.

show abstract

Acoustic Fields and Radiation Forces Induced by a Standing Surface Wave in Layered Viscous Media

Гусев

Жарков

2022

Acoust. Phys.

View full text Add to dashboard Cite

Viscoelastic relaxation in fluids

Cited by 7 publications

References 15 publications

Mechanical Properties of Viscous Liquids and Nanosuspensions

Mechanical Properties of Viscous Liquids and Nanosuspensions

Technique and Device for the Experimental Estimation of the Acoustic Impedance of Viscoelastic Medium

Acoustic Fields and Radiation Forces Induced by a Standing Surface Wave in Layered Viscous Media

Contact Info

Product

Resources

About