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Low- and High-Cycle Fatigue Behavior of FRCM Composites

This paper describes methods, procedures, and results of cyclic loading tensile tests of a PBO FRCM composite. The main objective of the research is the evaluation of the effect of low- and high-cycle fatigue on the composite tensile properties, namely the tensile strength, ultimate tensile strain,...

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Autores principales: Calabrese, Angelo Savio, D’Antino, Tommaso, Colombi, Pierluigi, Poggi, Carlo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8465480/
https://www.ncbi.nlm.nih.gov/pubmed/34576636
http://dx.doi.org/10.3390/ma14185412
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author Calabrese, Angelo Savio
D’Antino, Tommaso
Colombi, Pierluigi
Poggi, Carlo
author_facet Calabrese, Angelo Savio
D’Antino, Tommaso
Colombi, Pierluigi
Poggi, Carlo
author_sort Calabrese, Angelo Savio
collection PubMed
description This paper describes methods, procedures, and results of cyclic loading tensile tests of a PBO FRCM composite. The main objective of the research is the evaluation of the effect of low- and high-cycle fatigue on the composite tensile properties, namely the tensile strength, ultimate tensile strain, and slope of the stress–strain curve. To this end, low- and high-cycle fatigue tests and post-fatigue tests were performed to study the composite behavior when subjected to cyclic loading and after being subjected to a different number of cycles. The results showed that the mean stress and amplitude of fatigue cycles affect the specimen behavior and mode of failure. In high-cycle fatigue tests, failure occurred due to progressive fiber filaments rupture. In low-cycle fatigue, the stress–strain response and failure mode were similar to those observed in quasi-static tensile tests. The results obtained provide important information on the fatigue behavior of PBO FRCM coupons, showing the need for further studies to better understand the behavior of existing concrete and masonry members strengthened with FRCM composites and subjected to cyclic loading.
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spelling pubmed-84654802021-09-27 Low- and High-Cycle Fatigue Behavior of FRCM Composites Calabrese, Angelo Savio D’Antino, Tommaso Colombi, Pierluigi Poggi, Carlo Materials (Basel) Article This paper describes methods, procedures, and results of cyclic loading tensile tests of a PBO FRCM composite. The main objective of the research is the evaluation of the effect of low- and high-cycle fatigue on the composite tensile properties, namely the tensile strength, ultimate tensile strain, and slope of the stress–strain curve. To this end, low- and high-cycle fatigue tests and post-fatigue tests were performed to study the composite behavior when subjected to cyclic loading and after being subjected to a different number of cycles. The results showed that the mean stress and amplitude of fatigue cycles affect the specimen behavior and mode of failure. In high-cycle fatigue tests, failure occurred due to progressive fiber filaments rupture. In low-cycle fatigue, the stress–strain response and failure mode were similar to those observed in quasi-static tensile tests. The results obtained provide important information on the fatigue behavior of PBO FRCM coupons, showing the need for further studies to better understand the behavior of existing concrete and masonry members strengthened with FRCM composites and subjected to cyclic loading. MDPI 2021-09-18 /pmc/articles/PMC8465480/ /pubmed/34576636 http://dx.doi.org/10.3390/ma14185412 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Calabrese, Angelo Savio
D’Antino, Tommaso
Colombi, Pierluigi
Poggi, Carlo
Low- and High-Cycle Fatigue Behavior of FRCM Composites
title Low- and High-Cycle Fatigue Behavior of FRCM Composites
title_full Low- and High-Cycle Fatigue Behavior of FRCM Composites
title_fullStr Low- and High-Cycle Fatigue Behavior of FRCM Composites
title_full_unstemmed Low- and High-Cycle Fatigue Behavior of FRCM Composites
title_short Low- and High-Cycle Fatigue Behavior of FRCM Composites
title_sort low- and high-cycle fatigue behavior of frcm composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8465480/
https://www.ncbi.nlm.nih.gov/pubmed/34576636
http://dx.doi.org/10.3390/ma14185412
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