Results 21 to 30 of about 462,318 (290)

Microsecond relaxation processes in shear and extensional flows of weakly elastic polymer solutions [PDF]

, 2012
In this paper, we introduce an experimental protocol to reliably determine extensional relaxation times from capillary thinning experiments of weakly elastic dilute polymer solutions. Relaxation times for polystyrene in diethyl phthalate solutions as low
Mathues, Wouter, Vadillo, Damien, Clasen, Christian   +2 more
core   +2 more sources

Viscoelastic behaviour of basaltic lavas. [PDF]

, 2004
The rheological properties of basaltic lavas from Etna, Hawai′i and Vesuvius have been investigated at temperatures between 500 and 1150°C using a small-strain oscillatory shear. The viscoelastic response of the lavas to small, forced, sinusoidal torques
James, M R, Pinkerton, H, Bagdassarov, N, MÜLLER, K   +3 more
core   +4 more sources

Study on the Testing Method of Relaxation Modulus under Spherical Indenter Loading

Advances in Materials Science and Engineering, 2022
Viscoelastic materials are widely used in various fields. In order to better use viscoelastic materials in various working conditions, it is necessary to master the material properties of viscoelastic materials.
Xiong Li, LunLun Wan, Fuyan Lin, Chang Liu   +3 more
doaj   +1 more source

Calculation of Relaxation Spectra from Stress Relaxation Measurements [PDF]

, 2010
Application of stress on materials increases the energy of the system. After removal of stress, macromolecules comprising the material shift towards equilibrium to minimize the total energy of the system.
Kontogiorgos, Vassilis, Vassilis Kontogiorgos   +1 more
core   +1 more source

Stress concentration in nonlinear viscoelastic composites

Mechanics and Advanced Technologies, 2017
A nonlinear viscoelastic problem of the mechanics of composites is solved within the framework of a second-order nonlinear theory. A viscoelastic functional is used to construct general defining relations.
B. Maslov
doaj   +1 more source

Investigating the stability of viscoelastic stagnation flows in T-shaped microchannels [PDF]

, 2009
We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) solution using T-shaped microchannels. The precise flow rate control and well-defined geometries achievable with microfluidic fabrication technologies ...
Sousa, P.C., Oliveira, Monica S. N., P. C. Sousa B, M.S.N. Oliveira, M.A. Alves, Oliveira, Monica, Alves, M.A., J. Soulages A, McKinley, G.H., G. H. Mckinley A, Soulage, Johannes, Alves, Manuel A., M. S. N. Oliveira B, McKinley, Gareth H., J. Soulages, M. A. Alves B, G.H. McKinley, Soulages, J., P.C. Sousa, Sousa, P. C.   +19 more
core   +4 more sources

Microheology of fibrin clots [PDF]

, 2012
An active particle tracking microrheology technique has been developed to study the viscoelastic properties of human fibrin and plasma clots. In order to perform microrheology measurements, a magnetic microrheometer device has been adapted and a ...
Allan, Peter
core   +6 more sources

Fractional viscoelastic models for the estimation of the frequency response of rubber bushings based on relaxation tests

Results in Engineering, 2023
Estimation of the viscoelastic properties of rubber bushings at very high frequencies (up to 2 kHz) is a challenge for many damping component manufacturers in the design stage of a quality monitoring procedure.
Jose Calaf-Chica, Víctor Cea-González, María-José García-Tárrago, Francisco-Javier Gómez-Gil   +3 more
doaj   +1 more source

Investigation of Relaxation Time on Viscoelastic Two-Dimensional Flow Characteristics Using FreeFem++

Journal of Mathematics, 2022
Viscoelastic fluid flow models have shown promising scope in modeling the behavior of many industrial materials such as polymeric materials, microfluidics, biological liquids, gels, plastic melts, and geomaterials.
Muhammad Sabeel Khan, M. Asif Memon, Ebenezer Bonyah   +2 more
doaj   +1 more source

Research on Material Viscoelasticity and Its Influence on Indentation Rolling Resistance

Applied Sciences
Viscoelastic materials are applied in several fields, and their relaxation characteristics are intricately related to the failure mechanism of sealing components and the generation of indentation rolling resistance in belt conveyors.
Lunlun Wan, Fuyan Lin
doaj   +1 more source