Zobrazeno 1 - 10
of 24
pro vyhledávání: '"N. A. Tyapunina"'
Publikováno v:
Crystallography Reports. 55:77-82
The influence of light illumination on the nonelastic properties of high-resistivity light-sensitive CdS crystals under ultrasound (the so-called photoacoustic effect (PAE)) is studied. It is shown that the crystal steady state is attained with two d
Autor:
V. T. Degtyarev, G. V. Bushueva, A. Yu. Losev, F. A. Plotnikov, G. M. Zinenkova, N. A. Tyapunina
Publikováno v:
Crystallography Reports. 53:474-479
The change in the structure of dislocation ensembles under the action of ultrasound has been investigated using computer simulation, selective chemical etching, and electron microscopy.
Autor:
N. A. Tyapunina, M. I. Silis, V. Yu. Bogunenko, D. S. Podsoblyaev, G. V. Bushueva, Yu. B. Likhushin
Publikováno v:
Physics of the Solid State. 45:880-885
The motion of a screw dislocation under the action of ultrasound is simulated with account taken of its cross slip in a spatially nonuniform stress field created by a fixed dislocation of the same sense. Only dislocations started from certain regions
Publikováno v:
Physics of the Solid State. 45:98-103
The effect of a magnetic field of 0.04–0.8 T on the amplitude dependence of the internal friction in LiF crystals with various impurities is studied using a two-component resonant-oscillator method at a frequency of 80 kHz. The state of the samples
Publikováno v:
Crystallography Reports. 45:150-153
The effect of a weak (0.2 T) magnetic field on the amplitude dependences of the internal friction and the defect of Young’s modulus in KBr crystals has been studied. It is shown that, under the action of the magnetic field, the internal friction in
Publikováno v:
physica status solidi (a). 69:77-83
Peculiarities of steady-state nonlinear vibrations and of the multiplication of dislocations by a Frank-Read source under ultrasound are considered using the computer simulation method. It is shown that the dynamic yield stress differs from the stati
Publikováno v:
Physica Status Solidi (a). 46:351-356
In alkali halide crystals, KCl, KBr, NaCl, and LiF, investigations are made of the orientation dependence of the internal friction in the kHz region. It is shown that dislocation internal friction as a function of the angle between the cubic axis and
Publikováno v:
Physica Status Solidi (a). 99:353-363
The dislocation internal friction dependency on sample crystallographic orientation, ultrasonic vibration amplitude, and plastic predeformation of the samples is studied for CsI single crystals using the composite piezoelectric vibrator method. The d
Publikováno v:
Soviet Physics Journal. 28:118-121
The influence of a nonuniform field of internal stresses and the generation of a dislocation loop by a Frank-Read source operating under the action of an alternating load is investigated by computer simulation. It is shown that the field of a tilt bo
Publikováno v:
Soviet Physics Journal. 27:213-216
The generation of dislocations by block boundaries in alkali-halide crystals under the action of ultrasound was investigated making use of a computer defet modeling method. Ultrasonic vibrations were excited in a double piezoelectric oscillator at th