PSI - Issue 28

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ScienceDirect

Procedia Structural Integrity 28 (2020) 602–607 Structural Integrity Procedia 00 (2020) 000–000 Structural Integrity Procedia 00 (2020) 000–000

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

© 2020 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 European Structural Integrity Society (ESIS) ExCo Abstract The technique of experimental testing and estimation of failure strengths for composite thick-walled 2-component cylinder pro posed. We estimated amplitude of the generated by the wire explosion pressure and portions of this pressure transmitted into the PMMA cylinder and the aluminium shell. Dependence between cylinder radius and radial pressure measured and recorded with developed by us piezo-probe. Failure stress for the PMMA cylinder as well as failure strass of the aluminium shell is also estimated. c 2020 The Authors. Published by Elsevier B.V. his is an open access article under the CC BY-NC-ND license (http: // creativec mmons.org / licenses / by-nc-nd / 4.0 / ) er-review under responsibility of the European Structural Integr ty Society (ESIS) ExCo. Keywords: Electric explosion of wire; Fracture strength estimation; Composite cylinder 1st Virtual European Conference on Fracture High-rated loading, deformation and fracture of thick-walled composite cylinders with an electric explosion of wires Victor Kats a, ∗ , Viktor Morozov a a St Petersburg University, 7 / 9 Universitetskaya Emb., St Petersburg, 199034, Russia Abstract The technique of experimental testing and estimation of failure strengths for composite thick-walled 2-component cylinder pro posed. We estimated amplitude of the generated by the wire explosion pressure and portions of this pressure transmitted into the PMMA cylinder and the aluminium shell. Dependence between cylinder radius and radial pressure measured and recorded with developed by us piezo-probe. Failure stress for the PMMA cylinder as well as failure strass of the aluminium shell is also estimated. c 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo. Keywords: Electric explosion of wire; Fracture strength estimation; Composite cylinder 1st Virtual European Conference on Fracture High-rated loading, deformation and fracture of thick-walled composite cylinders with an electric explosion of wires Victor Kats a, ∗ , Viktor Morozov a a St Petersburg University, 7 / 9 Universitetskaya Emb., St Petersburg, 199034, Russia

1. Introduction 1. Introduction

The dynamic performance of thick-walled construction such as cylinders and pipes is an item of relevance to a lot of fields of practical use of constructions. Problems of study of the time-dependent deformation as well as the sensibility of the media to the rate of deformation under the condition of extremal loading appear to be actual. Loading of the vessels with products of chemical detonation appears to be the key technique in a great number of researches. This approach, however, reveals to be unsafe, unecological and labour-intensive. Replacing the chemical detonation with an electric explosion of wire remains the most modern and highly-e ffi cient approach to this problem. Composite cylinders appear to be preferable construction solution for the strength parameters. In the present work, we discuss problems of dynamic loading of such cylinders. The dynamic performance of thick-walled construction such as cylinders and pipes is an item of relevance to a lot of fields of practical use of constructions. Problems of study of the time-dependent deformation as well as the sensibility of the media to the rate of deformation under the condition of extremal loading appear to be actual. Loading of the vessels with products of chemical detonation appears to be the key technique in a great number of researches. This approach, however, reveals to be unsafe, unecological and labour-intensive. Replacing the chemical detonation with an electric explosion of wire remains the most modern and highly-e ffi cient approach to this problem. Composite cylinders appear to be preferable construction solution for the strength parameters. In the present work, we discuss problems of dynamic loading of such cylinders.

2. Experimental study 2. Experimental study

The schematics of our experiment provided in figure 1. We developed the following technique to create composed cylinder for our tests. Plastic cylinder made of PMMA was pressed inside peace of aluminium pipe with an internal The schematics of our experiment provided in figure 1. We developed the following technique to create composed cylinder for our tests. Plastic cylinder made of PMMA was pressed inside peace of aluminium pipe with an internal

2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.10.070 ∗ Corresponding author. Tel.: + 7-812-428-4170. E-mail address: v.kats@spbu.ru 2210-7843 c 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo. ∗ Corresponding author. Tel.: + 7-812-428-4170. E-mail address: v.kats@spbu.ru 2210-7843 c 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo.