Article 10220

Title of the article

THE INFLUENCE OF PARAMETERS’ TECHNOLOGICAL DEVIATIONS OF REPRESENTATIVE CELLS ON RESISTANCE TO DEFORMATION AND FRACTURE OF POLYMER LAYER COMPOSITE MATERIALS 

Authors

Kartashova Ekaterina Dmitrievna, Postgraduate student, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: mailto:katrina89@yandex.ru
Muyzemnek Aleksandr Yur'evich, Doctor of engineering sciences, professor, head of the sub-department of theoretical and applied mechanics and graphics, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: muyzemnek@yandex.ru 

Index UDK

621 

DOI

10.21685/2072-3059-2020-2-10 

Abstract

Background. One of the promising ways to ensure high performance requirements of modern aerospace, automotive and military equipment while reducing its mass is to use polymer layered composite materials (PSKM). One of the reasons hindering the wider use of these materials is the presence of technological defects that have a significant impact on the physicomechanical characteristics of these materials, including the characteristics of resistance to deformation and fracture. Technological defects include deviations of the weight and thickness of PSKM from design values, porosity, deviations of the angles of orientation of the fabric threads in the layer, deviations of the angles of laying layers, the spread of the distance between the threads in the layer of PSKM, the waviness of the threads. The aim of the work is to study the influence of technological defects in PSCM, obtained by the technology of manual molding, vacuum bag and vacuum infusion, on their resistance to deformation and destruction, taking this influence into account in the design.
Materials and methods. As the studied materials, polymer layered composite materials based on carbon fabrics and epoxy binders were selected. In the study of technological defects, optical methods were used to study the micro- and macrostructures, while experimental studies of the resistance to deformation and fracture were used in laboratory tests, and in theoretical studies, computer simulation methods were used.
Results. The dependencies between the statistical characteristics of technological defects in PSKM on the one hand and the characteristics of its resistance to deformation and destruction on the other hand are established.
Conclusions. The influence of deviations of the angles of orientation of the fabric threads in the layer, deviations of the angles of laying layers from the design values on the characteristics of its resistance to deformation and destruction is significant and should be taken into account when designing. The influence of the technology used to obtain PSKM on its physical and mechanical properties should also be taken into account. 

Key words

polymer layered composite materials, technological defects, representative cell, resistance to deformation and destruction 

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References

1. Kartashova E. D., Muyzemnek A. Yu. Izvestiya vysshikh uchebnykh zavedeniy. Povolzhskiy region. Tekhnicheskie nauki [University proceedings. Volga region. Engineering sciences]. 2017, no. 2 (42), pp. 79–89. [In Russian]
2. Kartashova E. D., Kosova M. A., Zheludkova A. A., Muyzemnek A. Yu. Innovatsii tekhnicheskikh resheniy v mashinostroenii i transporte: Materialy III Vseros. nauchtekhn. konf. [Innovation of technical solutions in mechanical engineering and transport: proceedings of the III All-Russian scientific and technical conference]. Penza, 2018, pp. 185–188. [In Russian]
3. Kartashova E. D., Muyzemnek A. Yu. Izvestiya vysshikh uchebnykh zavedeniy. Povolzhskiy region. Tekhnicheskie nauki [University proceedings. Volga region. Engineering sciences]. 2017, no. 3 (43), pp. 134–145. [In Russian]

 

Дата создания: 31.08.2020 08:37
Дата обновления: 31.08.2020 14:24