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51.
A hysteresis equation of state is proposed for polycrystalline solids with saturation of nonlinear losses. Effects of amplitude-dependent internal friction and higher harmonic generation that result from propagation of harmonic acoustic waves in rods made of such materials are theoretically and numerically studied. 相似文献
52.
D. V. Yanin A. V. Kostrov A. I. Smirnov M. E. Gushchin S. V. Korobkov A. V. Strikovskii V. I. Gundorin V. V. Nazarov M. V. Starodubtsev 《Technical Physics》2012,57(4):468-477
A method of resonant near-field microwave probing is developed for contactless diagnostics of a high-pressure plasma. The
efficiency of this method in measuring the parameters of the plasma of an rf capacitive discharge in argon under atmospheric
pressure is demonstrated. The experimental results are compared with the data obtained using the independent method, the microwave
radiation “cutoff,” and with theoretical estimates. 相似文献
53.
Yu. V. Legostaeva L. R. Garifullina I. S. Nazarov G. Yu. Ishmuratov 《Russian Journal of Organic Chemistry》2018,54(1):146-148
Optically active isoniazid derivatives containing a cyclopropane or cyclobutane fragment have been synthesized by ozonolysis of (+)-Δ3-carene and (–)-α-pinene, followed by treatment of the ozonolysis products with isonicotinic acid hydrazide. 相似文献
54.
55.
Rytikov G. O. Doronin F. A. Evdokimov A. G. Savel’ev M. A. Nazarov V. G. 《Russian Journal of General Chemistry》2021,91(12):2667-2672
Russian Journal of General Chemistry - Dynamic modeling of the polymodal morphological structure of the polymer surface, with modified polyethylene terephthalate as an example, was performed. In... 相似文献
56.
V. E. Nazarov 《Physics of the Solid State》2016,58(9):1719-1728
Based on the modification of the linear part of the Granato–Lücke dislocation theory of absorption, the equation of state of polycrystalline solids with dissipative and reactive nonlinearity has been derived. The nonlinear effects of the interaction and self-action of longitudinal elastic waves in such media have been theoretically studied. 相似文献
57.
V. V. Shpeĭzman V. I. Nikolaev N. N. Peschanskaya A. E. Romanov B. I. Smirnov I. A. Aleksandrov N. A. Enikeev V. U. Kazykhanov A. A. Nazarov 《Physics of the Solid State》2007,49(4):678-683
The stress-strain compressive curves, temperature dependences of the yield stress, and small-inelastic-strain rate spectra of coarse-grained and ultrafine-grained (produced by equal-channel angular pressing) titanium and copper are compared in the temperature range 4.2–300 K. As the temperature decreases, copper undergoes mainly strain hardening and titanium undergoes thermal hardening. The temperature dependences of the yield stress of titanium and copper have specific features which correlate with the behavior of their small-inelastic-strain rate spectra. Under the same loading conditions, the rate of microplastic deformation of ultrafine-grained titanium is lower than that of coarse-grained titanium and the rate peaks shift toward high temperatures. The deformation activation volumes of titanium samples differing in terms of their grain size are (10–35)b 3, where b is the Burgers vector magnitude. The dependences of the yield stress on the grain size at various temperatures are satisfactorily described by the Hall-Petch relation. 相似文献
58.
Kovalchuk M. V. Borisov M. M. Garmatina A. A. Gordienko V. M. Zheltikov A. M. Kvardakov V. V. Korchuganov V. N. Likhachev I. A. Mareev E. I. Mitrofanov A. V. Nazarov M. M. Pashaev E. M. Potemkin F. V. Romanovskii Ya. O. Rudneva E. B. Sidorov-Biryukov D. A. Subbotin I. A. Chashchin M. V. Shcheglov P. A. Panchenko V. Ya. 《Crystallography Reports》2022,67(5):717-728
Crystallography Reports - The laser-synchrotron facility (LSF) of the National Research Centre “Kurchatov Institute” (NRC KI) is a unique research complex that combines unprecedented... 相似文献
59.
60.
S. V. Dmitriev A. A. Nazarov A. I. Potekaev A. I. Pshenichnyuk L. Z. Khadeeva 《Russian Physics Journal》2009,52(2):132-137
Using a biatomic chain of atoms as an example, whose interaction was represented by the Morse potential, we revealed a possibility
for a long-lived, dynamic, long-period, nanosized state to persist in the lattice structure. This nanosized structure (in
the case in question, the length of the spatial period of energy localization was found to be 16–20 nm) is generated under
excitation of a vibrational short-wave mode, with the atoms of the light component only participating. The resulting dynamic
nanostructures are principally different in their nature and characteristics from those described earlier and developed via
a mechanism of modulation instability of short-wave vibrational modes.
Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 21–26, February, 2009. 相似文献