PSI - Issue 17

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000

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

ScienceDirect

Procedia Structural Integrity 17 (2019) 658–665

ICSI 2019 The 3rd International Conference on Structural Integrity Phenomenological characteristics structural features research obtained at fibrous plastics standard tests Andrey V. Babushkin, Anna V. Babushkina, Elena M. Strungar, Oleg A. Staroverov, Dmitrii S. Lobanov, Maria S. Temerova, Evgenia V. Feklistova a Perm National Research Polytechnic University, Center of Experimental Mechanics, 29 Komsomolsky prospekt, Perm 614990, Russia ICSI 2019 The 3rd International Conference on Structural Integrity Phenomenological characteristics structural features research obtained at fibrous plastics standard tests Andrey V. Babushkin, Anna V. Babushkina, Elena M. Strungar, Oleg A. Staroverov, Dmitrii S. Lobanov, Maria S. Temerova, Evgenia V. Feklistova a Perm National Research Polytechnic University, Center of Experimental Mechanics, 29 Komsomolsky prospekt, Perm 614990, Russia

Abstract Abstract

The work is aimed at developing fundamental experimental knowledge about the behavior of polymer composite materials samples (structural elements) during the implementation of non-trivial test methods and modeling. As part of the study an analysis of standard and approved testing methods for samples of composite materials was carried out. The work is ai d at developing funda ental experime tal knowledge about the behavior of polymer c mposite materials samples (structural elements) during the implementation of non-trivial test methods and modeling. As part of the study an analysis of standard and approved testing methods for samples of composite materials was carried out.

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers.

Keywords: composite materials, mechanical tests, modeling, digital optical system, acoustic emission system Keywords: composite materials, mechanical tests, modeling, digital optical system, acoustic emission system

1. Introduction 1. Introduction

The general trends in the introduction of innovative solutions, new technologies and materials and an increase in the operational characteristics of products while reducing the material intensity of a new technology stimulate the increasing use of composite materials. The global trend towards the introduction of composites and the replacement of metal structural materials with composite materials has become widespread in recent years. Often composite materials do not exist outside the design. And the samples of these materials are constructive elements. Attempts to create standard-type designs are doomed because while ensuring the representativeness of the volume this set of structural and technological parameters cannot be repeated outside the design on the one hand. On the other hand, the practical interest is caused by the properties of precisely these structural elements with a clear awareness of the impossibility and erroneous design in terms of “ordinary” approach es based on the obtained data. This circumstance leads to the emergence of experimental techniques large number, the results of which can only be considered as characteristics of the comparison, in strict compliance with the test conditions. However, these characteristics are relative and give good repeatability while observing the technology of а "samples" production and conducting an experiment. Considering the exclusiveness of sample designs and test methods, obtaining the characteristics postulated by the classical theory of elasticity viscoelasticity, plasticity is often impossible, as using the The general trends in the introduction of innovative solutions, new technologies and materials and an increase in the operational characteristics of products while reducing the material intensity of a new technology stimulate the increasing use of composite materials. The global trend towards the introduction of composites and the replacement of metal structural materials with composite materials has become widespread in recent years. Often composite materials do not exist outside the design. And the samples of these materials are constructive elements. Attempts to create standard-type designs are doomed because while ensuring the representativeness of the volume this set of structural and technological parameters cannot be repeated outside the design on the one hand. On the other hand, the practical interest is caused by the properties of precisely these structural elements with a clear awareness of the impossibility and erroneous design in terms of “ordinary” approach es based on the obtained data. This circumstance leads to the emergence of experimental techniques large number, the results of which can only be considered as characteristics of the comparison, in strict compliance with the test conditions. However, these characteristics are relative and give good repeatability while observing the technology of а "samples" production and conducting an experiment. Considering the exclusiveness of sample designs and test methods, obtaining the characteristics postulated by the classical theory of elasticity viscoelasticity, plasticity is often impossible, as using the

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers.

2452-3216  2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers. 10.1016/j.prostr.2019.08.088