Fatigue behavior of pultruded fiberglass tubes under tension, compression and torsion

Oleg Staroverov; Artur Mugatarov; Anastasia Sivtseva; Elena Strungar; Valeriy Wildemann; Aleksandr Elkin; Ivan Sergeichev

doi:10.3221/IGF-ESIS.69.09

Fatigue behavior of pultruded fiberglass tubes under tension, compression and torsion

Authors

Oleg Staroverov Center of Experimental Mechanics, Perm National Research Polytechnic University, Russia https://orcid.org/0000-0001-6095-0962
Artur Mugatarov Center of Experimental Mechanics, Perm National Research Polytechnic University, Russia https://orcid.org/0000-0002-2229-8181
Anastasia Sivtseva Center of Experimental Mechanics, Perm National Research Polytechnic University, Russia https://orcid.org/0000-0002-4348-7491
Elena Strungar Center of Experimental Mechanics, Perm National Research Polytechnic University, Russia https://orcid.org/0000-0002-2246-8638
Valeriy Wildemann Center of Experimental Mechanics, Perm National Research Polytechnic University, Russia
Aleksandr Elkin Center for Materials Technologies, Skolkovo Institute of Science and Technology, Russia https://orcid.org/0000-0003-2157-3425
Ivan Sergeichev Center for Materials Technologies, Skolkovo Institute of Science and Technology, Russia https://orcid.org/0000-0002-4106-4372

DOI:

https://doi.org/10.3221/IGF-ESIS.69.09

Keywords:

Polymer composite, Pultruded fiberglass tubes, Fatigue, Damage accumulation, Stiffness degradation, Digital image correlation

Abstract

This work is devoted to an experimental investigation of fatigue behavior of pultruded fiberglass tubes under uniaxial tension, compression and torsion. Static tests were carried out; a presence of postcritical deformation stage during torsion is noted. Regularities of inhomogeneous strain fields evolution are analyzed using digital image correlation method. Fatigue curves are built for four cyclic loading modes: tension-tension, compression-compression, tension-compression and torsion. An analysis of specimens' fractures is carried out, typical damaging mechanisms are revealed. Residual dynamic stiffness data is obtained and studied using a previously proposed fitting model. Results demonstrate model's high descriptive capability and its flexibility to describe two-staged and three-staged stiffness degradation curves. An influence of loading mode on a shape of these curves is found out. Model parameters' dependence on maximum stress value during the loading cycle is studied using the Pearson's correlation coefficient. The necessity of multiaxial fatigue behavior investigation of pultruded fiberglass tubes is concluded.

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Published

27-04-2024

Issue

Vol. 18 No. 69 (2024): July 2024

Section

Fatigue and Fracture of non metallic materials

License

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

Frattura ed Integrità Strutturale (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.

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How to Cite

Fatigue behavior of pultruded fiberglass tubes under tension, compression and torsion. (2024). Frattura Ed Integrità Strutturale, 18(69). https://doi.org/10.3221/IGF-ESIS.69.09