Results 301 to 310 of about 9,596,460 (344)

Wicking with a yield stress fluid

Journal of Physics: Condensed Matter, 2008
This work presents an experimental investigation of the flow of a model yield stress fluid (yield stresses between 5 and 21 Pa) driven by capillarity in horizontal glass tubes with diameters ranging from 0.46 to 1.5 mm. It is shown that the liquid penetration stops after typically a few centimeters. The results disagree with a simple model based on the
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Advances in yield stress measurements for chocolate

2017
Chocolate (a cocoa dispersion), can be defined as a concentrated suspension made up of solid particles, such as sugar, cocoa powder, milk powder, etc., dispersed in a Newtonian liquid, generally cocoa butter. The rheological properties of this matrix are largely influenced by type and quantity of ingredients and processing techniques.
V. Glicerina, S. Romani
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Rapid Spreading of Yield-Stress Liquids

Langmuir
When a liquid drop makes initial contact with any surface, an unbalanced surface tension force drives the contact line, causing spreading. For Newtonian liquids, either liquid inertia or viscosity dictates these early regimes of spreading, albeit with different power-law behaviors of the evolution of the dynamic spreading radius.
Surjyasish Mitra, A-Reum Kim, Boxin Zhao, Sushanta K. Mitra   +3 more
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Stress relaxation from initial stress levels below yield

Materials Research Bulletin, 1971
Abstract The problem of relaxation of a uniaxially stressed specimen, loaded initially to a level within the so-called elastic range and then held under load in the testing machine, is analyzed using the Johnston-Gilman concept of plastic flow.
Peter P. Gillis, Gordon A. Sargent
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Effect of particle gradation characteristics on yield stress of cemented paste backfill

International Journal of Minerals, Metallurgy, and Materials, 2020
Haiyong Cheng, Shunchuan Wu, Xiaoqiang Zhang, A. Wu   +3 more
semanticscholar   +1 more source

Yield-stress and stress relaxation measurements in cobalt

Journal of Applied Physics, 1984
Yield stress of polycrystalline cobalt (5N) was studied in the temperature range 15–300 K and interpreted by a theoretical model which provided an agreement with experimental results. Logarithmic stress relaxation was also studied in polycrystalline cobalt at natural strains of up to 8% at 15, 25, 40, and 55 K.
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Yield stress of magnetic suspensions

Colloid Journal, 2012
The theories available for the yield stress of magnetic suspensions imply that their transition from a quasi-elastic to a fluid behavior is related to the disruption of chainlike or bulk columnlike aggregates connecting opposite boundaries of a region containing a suspension.
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Yield Stress of Nanocrystalline Materials

2004
Most mechanical properties of nanocrystalline materials (NCMs) are essentially different from those of conventional coarse-grained polycrystals. NCMs exhibit extremely high strength and good fatigue resistance [224–226], as desired for numerous applications. Most NCMs show low tensile ductility which limits their practical utility.
Mikhail Yu. Gutkin, Ilya A. Ovid’ko
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Spreading of yield stress fluids

2023
The spreading of complex fluids is essential in many industrial processes for example in the cosmetic industry. We study here the spreading of complex fluids in two different geometries: dip coating experiments where a rod is pulled out of a yield stress fluid and soft blade experiments where a coating film is obtained by squeezing a liquid drop with a
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Critical Shear Stresses for Erosion From Yield Stresses

Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC); Multiphase Flow (MFTC)
Abstract Here we evaluate the assertion that critical shear stresses for erosion may be derived from yield stresses for nominally cohesive particle beds across the full range of particle Reynolds numbers. The critical shear stress for erosion for non-cohesive particle beds may be estimated from the Shields diagrams or the analytical ...
Leonard F. Pease, Arich J. Fuher, Judith Ann Bamberger, Michael J. Minette   +3 more
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