Results 11 to 20 of about 430,766 (349)

Universal behavior of internal friction in glasses below T : anharmonicity vs relaxation [PDF]

open access: yes, 2006
Comparison of the internal friction at hypersonic frequencies between a few K and the glass transition temperature Tg for various glasses brings out general features. At low temperature, internal friction is only weakly dependent on the material. At high
C. A. Angell   +18 more
core   +3 more sources

Arabica coffee flow properties assessed using different roasts and particle sizes during storage

open access: yesBrazilian Journal of Food Technology, 2022
Flowability of agricultural products is an important factor to be considered at post-harvest, thus impacting directly on number of operations and the design of machinery. This study aimed to evaluate and determine the K coefficient and flow properties as
Gabriel Henrique Horta de Oliveira   +4 more
doaj   +1 more source

Reflections on Friction in Quantum Mechanics

open access: yesEntropy, 2010
Distinctly quantum friction effects of three types are surveyed: internalfriction, measurement-induced friction, and quantum-fluctuation-induced friction.
Yair Rezek
doaj   +1 more source

Existence of long‐time solutions to dynamic problems of viscoelasticity with rate‐and‐state friction [PDF]

open access: yes, 2019
We establish existence of global solutions to a dynamic problem of bilateral contact between a rigid surface and a viscoelastic body, subject to rate‐and‐state friction.
Pipping, Elias
core   +2 more sources

Theoretical and computational validation of the Kuhn barrier friction mechanism in unfolded proteins

open access: yesScientific Reports, 2017
A long time ago, Kuhn predicted that long polymers should approach a limit where their global motion is controlled by solvent friction alone, with ruggedness of their energy landscapes having no consequences for their dynamics.
Stanislav M. Avdoshenko   +4 more
doaj   +1 more source

Research on the carbon emission reduction of internal combustion engines by reducing friction work [PDF]

open access: yesE3S Web of Conferences
The increase in carbon dioxide emissions is a key factor leading to the warming of the Earth’s climate system and the intensification of the greenhouse effect. Internal combustion engines have a significant impact on carbon emissions.
Du Fengming   +6 more
doaj   +1 more source

Internal Friction Angle of Metal Powders

open access: yesMetals, 2018
Metal powders are components with multidisciplinary usage as their application is very broad. Their consistent characterization across all disciplines is important for ensuring repeatable and trouble-free processes.
Jiri Zegzulka   +5 more
doaj   +1 more source

Internal friction in advanced Fe-Al intermetallics [PDF]

open access: yes, 2006
We have measured the internal friction and the dynamic modulus of an Fe–38 at.% Al alloy using a forced torsion pendulum working between 10−3 and 10 Hz. The measurements have been carried out as a function of temperature (from room temperature to 1200 K)
Fournier, Dominique   +4 more
core   +2 more sources

HYSTERETIC INTERNAL FRICTION

open access: yesLe Journal de Physique Colloques, 1985
It is emphasized that a distribution function in both the dislocation loop lengths and obstacle strengths must be considered to develop a quantitative theory for the hysteretic dissipation of energy. That is when dislocation surmounts and undulating internal stress field and the break-away is restricted by a restoring force considered to be that of ...
Roberts, J., Barnett, D.
openaire   +1 more source

Mechanical Spectroscopy of Ti-15Zr-based Alloys with Mo Addition [PDF]

open access: yesMaterials Research, 2017
In this paper, the effect of substitutional Mo amounts in internal friction and interstitial diffusion mechanisms was analyzed in Ti-15Zr-based alloys. Mechanical spectroscopy was obtained from room temperature up to 730 K with frequencies between 1 Hz ...
Diego Rafael Nespeque Correa   +2 more
doaj   +1 more source

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