Results 1 to 10 of about 2,723,163 (282)

Internal friction angle model of particles [PDF]

open access: yesScientific Reports, 2022
Currently, pressure from industry to streamline processes by creating their simulation models, and thus to gradual digitization is increasing. The essence of representative simulation models of bulk materials is to understand the principles and laws of ...
Jiri Zegzulka   +5 more
doaj   +2 more sources

Spectra of Internal Friction in Polyethylene. [PDF]

open access: yesPolymers (Basel), 2022
The study of spectra of internal friction λ=fT and temperature dependencies of frequency of freely damped ν=fT oscillatory process excited in investigated samples of polyethylene with different degree of crystallinity in the temperature range from −150 °C to +150 °C.
Lomovskoy VA   +3 more
europepmc   +4 more sources

Measurement of Strain-Amplitude Dependent Internal Friction with Torsion Pendulum and Vibration Reed Methods [PDF]

open access: yesMaterials Research, 2018
In the traditional standard of internal friction measurement the torsion pendulum and vibration reed were preferentially recommended where the issue of strain amplitude dependence of internal friction was not concerned.
Qianfeng Fang   +2 more
doaj   +1 more source

Annealing and Extended Etching Improve a Torsional Resonator for Thin Film Internal Friction Measurements [PDF]

open access: yesMaterials Research, 2018
We evaluate two methods to improve the background internal friction of the Double Paddle Oscillator (DPO), which has a nominal low temperature value of Q-1 ≈ 2×10-8. We find that annealing the DPO in vacuum at 300°C for 3 hours systematically reduced Q-1
Thomas Metcalf   +2 more
doaj   +1 more source

Thermal stability of SPD-processed aluminum alloys - Internal friction as an indication for recovery, recrystallization and abnormal grain growth

open access: yesJournal of Materials Research and Technology, 2022
In this study, we investigate the effect of different microstructures generated by severe plastic deformation on the thermal stability of an age-hardenable Al–Mg–Si alloy (AA6082).
Christian Illgen   +3 more
doaj   +1 more source

Experimental Study on the Effect of Freezing and Thawing on the Shear Strength of the Frozen Soil in Qinghai-Tibet Railway Embankment

open access: yesAdvances in Civil Engineering, 2022
The direct shear tests of different dry density and moisture content samples at different temperatures of the frozen soil in the Qinghai-Tibet Railway embankment between Tanggula South and Anduo section were carried out to analyze the influence rules of ...
B. Wang   +5 more
doaj   +1 more source

Is internal friction friction?

open access: yesGeophysical Research Letters, 1996
Mogi [1974] proposed a simple model of the incipient rupture surface to explain the Coulomb failure criterion. We show here that this model can plausibly be extended to explain the Mohr failure criterion. In Mogi's model the incipient rupture surface immediately before fracture consists of areas across which material integrity is maintained (intact ...
J. C. Savage   +2 more
openaire   +1 more source

Internal friction in enzyme reactions [PDF]

open access: yesIUBMB Life, 2012
AbstractThe empirical concept of internal friction was introduced 20 years ago. This review summarizes the results of experimental and theoretical studies that help to uncover the nature of internal friction. After the history of the concept, we describe the experimental challenges in measuring and interpreting internal friction based on the viscosity ...
Rauscher, A.   +3 more
openaire   +2 more sources

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

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

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