PSI - Issue 41

596 A.M. Ignatova et al. / Procedia Structural Integrity 41 (2022) 589–597 8 Ignatova A.M., Yudin M.V., Voronov V.L, Ignatov M.N., Gladky I.L., Inozemtsev A.A., Naimark O.B. / Structural Integrity Procedia 00 (2019) 000–000

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Fig. 7. Averaged dependencies of change in velocity of fracture fragments of potassium fluorphlogopite targets following an impact with a steel ball: 1 – at a velocity of 230 m/s, collision angle 90º; 2 – at a velocity of 120 m/s, collision angle 90º; 3 – at a velocity of 230 m/s, collision angle 30º; 4 – at a velocity of 120 m/s, collision angle 30º.

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Fig. 8. Particle size of fracture fragments of potassium fluorphlogopite targets following an impact with a steel ball: 1 – at a velocity of 230 m/s, collision angle 90º; 2 – at a velocity of 120 m/s, collision angle 90º; 3 – at a velocity of 230 m/s, collision angle 30º; 4 – at a velocity of 120 m/s, collision angle 30º. Based on the analysis of dependencies 'velocity of fragments – time' (Fig. 7), for which the logarithmic curves were obtained in Fig. 6, it has been found that they can be described with the following function: