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2.5D printing of a yield-stress fluid. [PDF]
Sci Rep, 2023 Abstract We report on direct ink writing of a model yield-stress fluid and focus on the printability of the first layer, the one in contact with the supporting substrate. We observe a diversity of deposition morphologies that depends on a limited set of operational parameters, mainly ink flow rate, substrate speed
Colanges S +3 more
europepmc +4 more sources
Granular Hydrogels as Brittle Yield Stress Fluids. [PDF]
Adv MaterABSTRACTWhile granular hydrogels are increasingly used in biomedical applications, methods to capture their rheological behavior generally consider shear-thinning and self-healing properties or produce ensemble metrics such as the dynamic moduli. Analytical approaches paired with common oscillatory shear tests can describe not only solid-like and fluid-
Thompson GB +5 more
europepmc +3 more sources
Stress Overshoots in Simple Yield Stress Fluids [PDF]
Physical Review Letters, 2021 Soft glassy materials such as mayonnaise, wet clays, or dense microgels display under external shear a solid-to-liquid transition. Such a shear-induced transition is often associated with a non-monotonic stress response, in the form of a stress maximum referred to as "stress overshoot".
Benzi, Roberto +5 more
openaire +5 more sources
Direct evidence of plastic events and dynamic heterogeneities in soft-glasses [PDF]
, 2014 By using fluid-kinetic simulations of confined and concentrated emulsion droplets, we investigate the nature of space non-homogeneity in soft-glassy dynamics and provide quantitative measurements of the statistical features of plastic events in the ...
Benzi, R. +5 more
core +22 more sources
Mastering Yield Stress Evolution and Formwork Friction for Smart Dynamic Casting. [PDF]
Materials (Basel), 2020 Szabo A +5 more
europepmc +3 more sources
Acta Technica Jaurinensis, 2023 The importance of turbines in power generation cannot be overstated. While the failure in stationary plants can lead to downtime and high repair costs, its failure in mobile plants like the jet engines can be catastrophic with attendant loss of lives ...
Olumide Towoju +2 more
doaj +1 more source
On the “Thixotropic” Behavior of Fresh Cement Pastes
Eng, 2022 Thixotropic behavior describes a time-dependent rheological behavior characterized by reversible changes. Fresh cementitious materials often require thixotropic behavior to ensure sufficient workability and proper casting without vibration.
Youssef El Bitouri, Nathalie Azéma
doaj +1 more source
The Direct Impact Method for Studying Dynamic Behavior of Viscoplastic Materials [PDF]
Journal of Applied and Computational Mechanics, 2022 This work is devoted to the direct impact method for determining the deformation diagrams of viscoplastic materials at high strain rates. As the conventional Split Hopkinson Pressure Bar method, the direct impact method is based on the measuring bar ...
Artem Basalin +5 more
doaj +1 more source
Determination of the optimum ball radius for researching materials using ball indenting
Космические аппараты и технологии, 2021 The article discusses the study of the effect of a change in the radius of the ball in the injecting of the sample on the curve in the coordinates «load – indentation depth», the deviation of the indentation depth during elastoplastic indentation from ...
N. N. Avtonomov, A. V. Tololo
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Darcy’s Law for Yield Stress Fluids [PDF]
Physical Review Letters, 2019 Predicting the flow of non-Newtonian fluids in porous structure is still a challenging issue due to the interplay betwen the microscopic disorder and the non-linear rheology. In this letter, we study the case of an yield stress fluid in a two-dimensional structure.
Liu, Chen +3 more
openaire +4 more sources