Results 221 to 230 of about 8,782 (261)

Viscoelastic relaxation in supercooled liquids

Discussions of the Faraday Society, 1967
A study has been made of the viscoelastic behaviour of a range of supercooled liquids each of which has a steady-flow viscosity η fitting the equation, ln η=A′+ B′/(T–T0), where T0 is the reference temperature at which no free-volume is available for molecular translational motion. For all the liquids investigated, the limiting shear rigidity modulus G∞
A. J. Barlow, J. Lamb
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Viscoelastic relaxation in supercooled eugenol

Journal of the Chemical Society, Faraday Transactions 2, 1975
Measurements have been made of the viscosity, density, and shear mechanical resistance of eugenol. The relaxational behaviour is described in terms of the complex shear compliance J*(jω)=J∞+ 1/jωη+Jr/(1 + jωτr)β with the parameters Jr/J∞= 1.0, ηJ∞/τr= 2.0 and β= 0.5.
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Viscoelastic relaxation in liquid mixtures

Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1969
Abstract The authors have previously described a model from which the viscoelastic relaxation of supercooled liquids in alternating shear can be predicted. According to this model, the complex compliance of the liquid is represented by the equation J* = 1/G∞[1+1/jωr +2/(jωr)4], where G∞ is the limiting high frequency shear modulus and
A. J. Barlow, A. Erginsav, J. Lamb
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Stress relaxation test for the characterization of the viscoelasticity of pellets

European Journal of Pharmaceutics and Biopharmaceutics, 2007
The characterization of the mechanical properties of single uncoated pellets was performed in order to verify if these parameters could be used to predict the pellets aptitude to be compressed or utilized differently. Different ratios of microcrystalline cellulose and lactose monohydrate were used for the preparation of four batches of pellets by an ...
CESPI, MARCO, BONACUCINA, Giulia, MISICI FALZI M, GOLZI R, BOLTRI L, PALMIERI, Giovanni Filippo   +5 more
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Incompressible and Linearly Compressible Viscoelastic Creep and Relaxation

Journal of Applied Mechanics, 1974
It is shown that defining an incompressible material as one whose response to stressing or straining is insensitive to volumetric-type changes in strain or stress allows the derivation of incompressible forms for multiple integral representations, through the third order, which have only three kernel functions both in the creep formulation and the ...
Findley, W. N., Onaran, K.
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Fine Structure in the Parameters of Dielectric and Viscoelastic Relaxations

Macromolecules, 1994
A new method for the analysis of dielectric or viscoelastic data, the calculation of the fine structure in relaxation parameters, is described. The dielectric case is worked out in detail. Use is made of the partial derivatives of the dielectric constant with respect to temperature and frequency.
Steeman, P.A.M., Turnhout, J. van
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Viscoelastic stress relaxation, fast and slow

Soft Matter
SCOPE rheology diagram for the spectral classification of process and eigenmodes τ during a flow at strain rate  ( t′ ).
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Viscoelastic modeling of canine vocalis muscle in relaxation

The Journal of the Acoustical Society of America, 1985
Analysis of vocal fold vibration requires information on the viscoelastic properties of the vocalis muscle. The force response of two canine vocalis muscles was measured in one-dimensional, stepwise elongation of the tissue as a function of time with a computer-controlled ergometer.
F, Alipour-Haghighi, I R, Titze
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Reorientational Relaxation of Small Solutes in Viscoelastic Liquids

The Journal of Physical Chemistry B, 2016
The reorientational relaxation times of some small aromatic solutes are determined with nuclear magnetic resonance spectroscopy and time-resolved fluorescence anisotropy measurements in various solvents that exhibit viscoelasticity in the megahertz region. All the reorientational relaxation times in viscoelastic liquids are shorter than those predicted
Tsuyoshi, Yamaguchi, Yusuke, Abe, Katsura, Nishiyama   +2 more
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Note: Logarithmic Relaxation Spectrum for Viscoelastic Solids

Journal of Rheology, 1981
E. B. Christiansen, M. J. Miller
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