PSI - Issue 32

ScienceDirect StructuralIntegrity Procedia 00 (2021) 000 – 000 StructuralIntegrity Procedia 00 (2021) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com Sci nceDir t Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 32 (2021) 79–86

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” Abstract The article presents the setting of an experiment to assess the characteristics of fragmentation of mica-crystalline material under high-speed impact in cramped and free conditions and the results of the experiment are considered. The features of deformation and fracture were assessed by the nature of the distribution of fracture fragments in size, sphericity and convexity, depending on the impact. The indicated parameters of the fragments of destruction were estimated by the method of image analysis. The established features indicate that at the same impact velocities and impact angles, constrained conditions favor a greater localization of deformation than under conditions when there is no lateral compression. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer- review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” Keywords: non-metallic material; cracks; destruction; impact; armor material; fragmentation; image analysis. 1. Introduction Deformation and destruction of brittle materials, which include glass- and mica-crystalline materials, is practically and theoretically appealing. In practical terms, known behavior of brittle materials under effect of static, quasistatic and dynamic loads is used to predict behavior of rock during blasting operations, its fragmentation or occurrence of critical natural phenomena, for assessment of strength of structures made of artificial brittle materials XXIIth Winter School on Continuous Media Mechanics Fragmentation Behavior Of Mica-Crystalline Material Under High Velocity Impact In Constrained And Non-Constrained Conditions Ignatova A.M. a , Yudin M.V. b , Voronov V.L. b , Naymark O.B. a * a Institute of Continuous Media Mechanics of the Ural Branch of Russian Academy of Science (ICMM UB RAS), Academician Korolev Street, 1 Perm, 614013, Russian Federation b Perm National Research Polytechnic University, Komsomolsky prospekt, 29, Perm, 614990, Russian Federation Abstract The article presents the setting of an experiment to assess the characteristics of fragmentation of mica-crystalline material under high-speed impac in cramped and fr e conditions nd the r sults of the experiment are considered. The fe tures of d formation and fracture were assessed by the nature f the distribu ion of fracture fragments i size, sphericity and convexity, depending the impact. The indicat parameters of the fragmen s of destruction wer e t mated by the method f image analysis. The established features indicate that at the same i pact velocities and impact angl s, constrain d condit ons favor a great r localization of deformat on than under conditions when th re is no l teral compression. © 2021 The Auth s. Publis ed by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer- review under re ponsibility of t scientific committe of the XXIIth Winter School on Cont nuous Media Mechanics” Keywords: non-metallic material; cracks; destruction; impact; armor material; fragmentation; image analysis. 1. Introduction Deformation and destruction of brittle materials, which include glass- and mica-crystalline materials, is practically and theoretically appealing. In practical terms, known behavior of brittle aterials under effec of static, quas st tic dynamic loads is used to edi t behavior of rock during blast ng operat ons, its fragmentation or occurren e of critic l natur l phenomena, for assessment of st ength of structures mad of artif cial brittl materials XXIIth Winter School on Continuous Media Mechanics Fragmentation Behavior Of Mica-Crystalline Material Under High Velocity Impact In Constrained And Non-Constrained Conditions Ignatova A.M. a , Yudin M.V. b , Voronov V.L. b , Naymark O.B. a * a Institute of Continuous Media Mechanics of the Ural Branch of Russian Academy of Science (ICMM UB RAS), Academician Korolev Street, 1 Perm, 614013, Russian Federation b Perm National Research Polytechnic University, Komsomolsky prospekt, 29, Perm, 614990, Russian Federation

* Corresponding author. Tel.: +7-922-370-32-68. E-mail address: iampstu@gmail.com * Corresponding author. Tel.: +7-922-370-32-68. E-mail ad ress: iampstu@gmail.com

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XXIIth Winter School o n Continuous Media Mechanics” 2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review u der re ponsibility of t e scientific committe of t e XXIIth Wint r School o n Cont nuous Media Mechanics”

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” 10.1016/j.prostr.2021.09.012