Mechanical behavior of fiber-glass plastic with hole pattern using digital image correlation and acoustic emission methods
##plugins.themes.bootstrap3.article.sidebar##
##plugins.themes.bootstrap3.article.main##
https://orcid.org/0000-0002-2246-8638
Dmitrii Lobanov
Center of Experimental Mechanics, Perm National Research Polytechnic University, Russia
https://orcid.org/0000-0003-1948-436X
Ekaterina Chebotareva
Center of Experimental Mechanics, Perm National Research Polytechnic University, Russia
https://orcid.org/0000-0002-6374-6964
Yaroslava Kochneva
Center of Experimental Mechanics, Perm National Research Polytechnic University, Russia
https://orcid.org/0009-0002-4951-6684
Abstract
In this paper, tensile tests of specimens with a pattern of holes made of fiber-glass plastic based on combined epoxy and phenol-formaldehyde resins are carried out in order to study the processes of damage accumulation and tension fracture. The Vic-3D video system is used to evaluate damage development and inhomogeneity of strain localization during loading. Continuous recording of acoustic emission signals is carried out during the tests, resulting in obtaining data on fracture mechanisms in the material. Ranges of peak frequencies are identified. Surface analysis of specimens was carried out using a microscope. A significant reduction in strength occurs due to the presence of a circular hole in the material, although additional holes do not exacerbate this effect. Fracture patterns of specimens with a hole pattern have been analyzed, and different "paths" of fracture have been observed. The comparison of strain fields obtained on the basis of application of three-dimensional digital optical system with the configuration of strain fields constructed as a result of numerical modeling by the finite element method has been carried out. It is found that the strain fields for different open hole patterns are quantitatively and qualitatively similar and identical.
##plugins.themes.bootstrap3.article.details##
How to Cite
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.
Open Access Statement
Fracture and Structural Integrity (F&SI) is an open-access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. This is in accordance with the DOAI definition of open access.
F&SI operates under the Creative Commons Licence Attribution 4.0 International (CC-BY 4.0). This allows to copy and redistribute the material in any medium or format, to remix, transform and build upon the material for any purpose, even commercially, but giving appropriate credit, providing a link to the license, and indicating if changes were made.