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- W4285266019 abstract "Determination of the velocity of individual fragments of a fragmented matter following an impact is necessary for studying the dynamic mechanical properties of materials. Various models descriptive of specific collision cases are used to predict the fragmentation parameters including the velocity of fragments. The models have been mostly designed to describe metallic materials. The research aims at experimental determination of the fragments destruction velocity following an impact against hard-melting non-metallic silicate material (potassium fluorphlogopite). Potassium fluorphlogopite targets have been shaped as flat plates sized 280x160x15 mm. The 23 mm steel ball (Steel 20) was used as a projectile. Four impact tests have been conducted with the following parameters: ball velocity 230 m/s and collision angle 90°; ball velocity 120 m/s and collision angle 90°; ball velocity 230 m/s and collision angle 30°; ball velocity 120 m/s and collision angle 30°. Velocity of burst fragments was determined on the basis of a video recording with Photron Fastcam SA5 high-speed camera. The video has been processed using frame-by-frame image analysis in ImageJ-FiJi software (TrackMate module). The experiment determined the velocities of individual burst fragments following an impact against hard-melting non-metallic silicate material, specifically potassium fluorphlogopite. It has been established that the change in the velocity of fragments in time corresponds to the hyperbolic function; a coefficient has been proposed to calculate the change in the velocity of potassium fluorphlogopite fragments break-off in time." @default.
- W4285266019 created "2022-07-14" @default.
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- W4285266019 date "2022-01-01" @default.
- W4285266019 modified "2023-10-01" @default.
- W4285266019 title "Velocity characteristics of fracture fragments of mica-crystal materials under high-speed impact" @default.
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- W4285266019 doi "https://doi.org/10.1016/j.prostr.2022.05.067" @default.
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