Results 171 to 180 of about 4,383 (211)
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Thixotropy and Plasticity. I—The Measurement of Thixotropy
Journal of Rheology, 1932Thixotropy is a reversible sol-gel transformation in which a gel can be liquefied, and thus changed to the sol condition, by mechanical disturbance—such as shaking or stirring—and after agitation ceases will, with time, again revert to the gel condition.
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Journal of Biomechanics, 1978
Abstract A rotary displacement servo has been used to apply in-plane torques in vivo to an annulus of human skin between a driven disc and fixed guard ring. Using the servo, skin on the forearms of 44 normal healthy individuals was studied with a series of rotational displacements. A trapezoidal displacement vs time waveform was employed to provide
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Abstract A rotary displacement servo has been used to apply in-plane torques in vivo to an annulus of human skin between a driven disc and fixed guard ring. Using the servo, skin on the forearms of 44 normal healthy individuals was studied with a series of rotational displacements. A trapezoidal displacement vs time waveform was employed to provide
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Journal of Non-Newtonian Fluid Mechanics, 1979
Abstract The time-dependent behaviour associated with thixotropy rather than with viscoelasticity is discussed. The evolution of the concept is traced back and a generalized definition is accepted. Subsequently, the various experimental methods are considered with which meaningful measurements of thixotropy can be performed. The specific experimental
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Abstract The time-dependent behaviour associated with thixotropy rather than with viscoelasticity is discussed. The evolution of the concept is traced back and a generalized definition is accepted. Subsequently, the various experimental methods are considered with which meaningful measurements of thixotropy can be performed. The specific experimental
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Viscoelasticity and thixotropy of human blood
Biorheology, 1981From an analysis of the researches works published on blood viscoelasticity and thixotropy, the authors suggest applying the models used for polymer solutions, in order to account for the phenomena observed with blood (transient and periodic flow).
J F, Stoltz, M, Lucius
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Journal of Non-Newtonian Fluid Mechanics, 1997
Abstract The ensuing mechanical response to stressing or straining a structured liquid results in various viscoelastic phenomena, either in the linear region where the microstructure responds linearly with respect to the stress and strain but does not itself change, or in the nonlinear region where the microstructure does change in response to the ...
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Abstract The ensuing mechanical response to stressing or straining a structured liquid results in various viscoelastic phenomena, either in the linear region where the microstructure responds linearly with respect to the stress and strain but does not itself change, or in the nonlinear region where the microstructure does change in response to the ...
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A nonequilibrium thermodynamics perspective of thixotropy
The Journal of Chemical Physics, 2018We propose a new description of elasto-viscoplastic fluids by relating the notion of thixotropy directly to internal viscoelasticity and network structures through a general, thermodynamically consistent approach. By means of non-equilibrium thermodynamics, a thermodynamically admissible elasto-viscoplastic model is derived which introduces self ...
Stephanou, Pavlos S. +3 more
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Thixotropy of Semisolid Metals
MRS Proceedings, 1999AbstractUnderstanding the time-dependent flow behavior of metal alloys in semisolid state is essential for the further development of the process. In the present investigation, the thixotropic behavior of semisolid slurries is modeled using conservation equations and the Herschel-Bulkley fluid model.
Andreas N. Alexandrou +2 more
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Bulletin of the Chemical Society of Japan, 1956
Abstract Thixotropy was observed on the gels formed by the addition of the suitable amounts of cupric chloride, barium chloride, lead nitrate, calcium chloride, cadmium sulfate, zinc sulfate and nickel sulfate to the solutions of sodium alginate.
Tunetaka Sasaki +2 more
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Abstract Thixotropy was observed on the gels formed by the addition of the suitable amounts of cupric chloride, barium chloride, lead nitrate, calcium chloride, cadmium sulfate, zinc sulfate and nickel sulfate to the solutions of sodium alginate.
Tunetaka Sasaki +2 more
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Kolloid-Zeitschrift, 1952
The author adopts the original Freundlich-Peterfi definition of thixotropy, that is the reversible isothermal gel/sol/gel/transformation induced by shear and subsequent rest. The criterion of a gel is the presence of a “Yield Value”, and that of a sol the absence of a “Yield Value”.
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The author adopts the original Freundlich-Peterfi definition of thixotropy, that is the reversible isothermal gel/sol/gel/transformation induced by shear and subsequent rest. The criterion of a gel is the presence of a “Yield Value”, and that of a sol the absence of a “Yield Value”.
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