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An investigation on physicomechanical properties of solids at extremely high stress and strain rate is of great scientific and practical use. Interest in this field of science was initially caused by military tasks: armor, bullets and armor-piercing projectiles production.
At present results of this investigation are also used in astronautics, aviation, mechanical engineering and so on.
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Facility for studying dynamic properties of solids at high impact velocities.
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High speed impact testing of various solids (metals, alloys, ceramics, glass) are carried out. The strain rate is up to
106-107 s-1. The particle velocity is up to 103 m/s. A laser (differential) two channel interferometer is used for measuring an average free surface velocity and dispersion of particle velocity.
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High pressure chamber
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It allows to find such characteristics as dynamic yield stress, spall strength, elastic-plastic wave velocity and so on.
After impact loading microstructure investigation of the samples are carried out with optical and electronic microscopy. Models (mechanisms) of dynamic plasticity and fracture are identified. Using new technique
of interferometer data handling we get information on various texture levels of dynamic processes.
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Laser two channel interferometer
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Special equipment for high velocity impact tests are designed and manufactured in the lab: light gas guns, one and two channel interferometers, vacuum chambers and so on. Consultation and training of specialists in dynamic properties of solids are provided.
More than 50 papers have been published.
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A rotation cell in titanic alloy
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