Results 31 to 40 of about 5,266 (303)

Exploring Effects of Graphene and Carbon Nanotubes on Rheology and Flow Instability for Designing Printable Polymer Nanocomposites

open access: yesNanomaterials, 2023
Nowadays, a strong demand exists for printable materials with multifunctionality and proper rheological properties to overcome the limitations to deposit layer-by-layer in additive extrusion.
Rumiana Kotsilkova, Sonia Tabakova
doaj   +1 more source

Calorimetric consequences of thermal softening in Johnson–Cook’s model [PDF]

open access: yes, 2013
At high loading rates, the development of adiabatic shear bands in metals is conventionally attributed to the strong interactions induced by viscoplastic dissipation within the bands and thermal softening effects.
RANC, Nicolas, CHRYSOCHOOS, André
core   +1 more source

Microstructural Evolution of Shear Localization in High-Speed Cutting of CoCrFeMnNi High-Entropy Alloy

open access: yesMetals, 2023
Shear localization is one of the most important failure mechanisms subjected to high-strain-rate deformation and has significant effects on the process, plastic deformation, and catastrophic failure of a material.
Ming-Yao Su   +5 more
doaj   +1 more source

Yielding, shear banding, and brittle failure of amorphous materials

open access: yesPhysical Review Research, 2022
Widespread processes in nature and technology are governed by the dynamical transition whereby a material in an initially solid-like state, whether soft or hard, then yields. Major unresolved questions concern whether any material will yield smoothly and
Joseph Pollard, Suzanne M. Fielding
doaj   +1 more source

Crossing of shears bands in 196Pb

open access: yesZeitschrift für Physik A Hadrons and Nuclei, 1996
High-spin states in 196Pb have been populated using the reaction 170Er(30Si,4n). The previously observed shears bands in this nucleus have been extended and some of their transitions have been reordered. They now form regular bands with band crossings. One of the bands splits into two pathways at high spin.
G. Baldsiefen   +9 more
openaire   +2 more sources

The genesis of adiabatic shear bands

open access: yesScientific Reports, 2016
AbstractAdiabatic shear banding (ASB) is a unique dynamic failure mechanism that results in an unpredicted catastrophic failure due to a concentrated shear deformation mode. It is universally considered as a material or structural instability and as such, ASB is hardly controllable or predictable to some extent.
P. Landau   +4 more
openaire   +2 more sources

Shear band analysis of silt-clay transition soils under three-dimensional stress-strain conditions

open access: yesSoils and Foundations
This paper investigates shear banding as a possible failure mode for silt–clay transition soils under general three-dimensional stress conditions. Drained and undrained true triaxial tests with constant b values were performed on tall prismatic specimens
Pongpipat Anantanasakul   +1 more
doaj   +1 more source

Reconstruction of active regular motion in amoeba extract: dynamic cooperation between sol and gel states.

open access: yesPLoS ONE, 2013
Amoeboid locomotion is one of the typical modes of biological cell migration. Cytoplasmic sol-gel conversion of an actomyosin system is thought to play an important role in locomotion.
Yukinori Nishigami   +6 more
doaj   +1 more source

Adiabatic Shear Banding in Nickel and Nickel-Based Superalloys: A Review

open access: yesMetals, 2022
This review paper discusses the formation and propagation of adiabatic shear bands in nickel-based superalloys. The formation of adiabatic shear bands (ASBs) is a unique dynamic phenomenon that typically precedes catastrophic, unpredicted failure in many
Russell A. Rowe   +3 more
doaj   +1 more source

Linear instability of planar shear banded flow of both diffusive and non-diffusive Johnson-Segalman fluids

open access: yes, 2006
We consider the linear stability of shear banded planar Couette flow of the Johnson-Segalman fluid, with and without the addition of stress diffusion to regularise the equations.
Wilson, HJ   +5 more
core   +1 more source

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