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Irregular fluctuations of friction coefficient around the mean value were analysed by means of fractal geometry methods. Particular data were recorded during the steady-state stage of dry sliding tests carried out in Si 3 N 4 ball – on – Si 3 N 4 /SiC nanocomposite disc configuration. It was proven that the set of points {sliding distance (time), friction coefficient},...
Experimental study of low-frequency oscillation modes of a domain wall between the homogeneously precessing domain (HPD) and the stationary domain (SD) in superfluid 3 He-B is presented. Measurements were performed in the temperature range from 0.5T c to 0.8T c and at a pressure of 2.7 bar. The small signal of the low-frequency domain wall oscillations on the high-frequency...
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