Effect of magnetic field and elastic stress on restoration of the internal friction of aluminum

1969 ◽  
Vol 12 (7) ◽  
pp. 970-972
Author(s):  
A. A. Rodionov ◽  
V. M. Gzogyan ◽  
I. V. Antonov
Keyword(s):  
Magnetic Field ◽  
Internal Friction ◽  
Elastic Stress

Elastic Stress and Magnetic Field Concentration Near the Vertex of a Soft-Ferromagnetic 2D Compound Wedge

2008 ◽  
Vol 75 (4) ◽  
pp. 041013
Author(s):  
Davresh Hasanyan ◽  
Zhanming Qin ◽  
Liviu Librescu
Keyword(s):  
Magnetic Field ◽  
Elastic Stress ◽  
Soft Ferromagnetic

Effect of a magnetic field on the elastic modulus and internal friction of alloy oKh27YU5A

1981 ◽  
Vol 13 (11) ◽  
pp. 1393-1396
Author(s):  
T. G. Kovaleva ◽  
A. D. Shevchuk ◽  
P. I. Tereshchenko
Keyword(s):  
Magnetic Field ◽  
Elastic Modulus ◽  
Internal Friction

scholarly journals Internal friction controls active ciliary oscillations near the instability threshold

2020 ◽  
Vol 6 (33) ◽  
pp. eabb0503 ◽  
Author(s):  
Debasmita Mondal ◽  
Ronojoy Adhikari ◽  
Prerna Sharma
Keyword(s):  
Internal Friction ◽  
Molecular Motors ◽  
Energy Input ◽  
Strain Softening ◽  
Elastic Stress ◽  
Fluid Motion ◽  
Sole Source ◽  
Instability Threshold ◽  
Ciliary Beating ◽  
External Fluid

Ciliary oscillations driven by molecular motors cause fluid motion at micron scale. Stable oscillations require a substantial source of dissipation to balance the energy input of motors. Conventionally, it stems from external fluid. We show, in contrast, that external fluid friction is negligible compared to internal elastic stress through a simultaneous measurement of motion and flow field of an isolated and active Chlamydomonas cilium beating near the instability threshold. Consequently, internal friction emerges as the sole source of dissipation for ciliary oscillations. We combine these experimental insights with theoretical modeling of active filaments to show that an instability to oscillations takes place when active stresses are strain softening and shear thinning. Together, our results reveal a counterintuitive mechanism of ciliary beating and provide a general experimental and theoretical methodology to analyze other active filaments, both biological and synthetic ones.

scholarly journals On the effect of a longitudinal magnetic field on the internal viscosity of wires of nickel and iron, as shown by change of the rate of subsidence of torsional oscillations

1902 ◽  
Vol 70 (459-466) ◽  
pp. 294-302 ◽  
Keyword(s):  
Magnetic Field ◽  
Internal Friction ◽  
Physical Properties ◽  
Longitudinal Magnetic Field ◽  
Torsional Oscillations ◽  
Relative Arrangement ◽  
Internal Viscosity ◽  
Different Parts

We can obtain information as to the nature of the magnetisation of magnetisable bodies only by testing the various hypotheses with reference to effects which it seems likely should, under these hypotheses, be produced on the physical properties of the substance. Thus, for example, the internal friction of the different parts of a solid must depend upon the size and mode of arrangement of these parts, and any alteration in their dimensions or relative arrangement ought in general to produce some change in the amount of the internal friction.

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