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Low-Cycle Fatigue of FRP Strips Glued to a Quasi-Brittle Material

Martinelli, Enzo ; Caggiano, Antonio (2022)
Low-Cycle Fatigue of FRP Strips Glued to a Quasi-Brittle Material.
In: Materials, 14 (24)
doi: 10.3390/ma14247753
Article, Bibliographie

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Abstract

This paper aims at further advancing the knowledge about the cyclic behavior of FRP strips glued to quasi-brittle materials, such as concrete. The results presented herein derive from a numerical model based on concepts of based on fracture mechanics and already presented and validated by the authors in previous works. Particularly, it assumes that fracture processes leading to debonding develop in pure mode II, as is widely accepted in the literature. Starting from this assumption (and having clear both its advantages acnd shortcomings), the results of a parametric analysis are presented with the aim of investigating the role of both the mechanical properties of the interface bond–slip law and a relevant geometric quantity such as the bond length. The obtained results show the influence of the interface bond–slip law and FRP bond length on the resulting cyclic response of the FRP-to-concrete joint, the latter characterized in terms of S-N curves generally adopted in the theory of fatigue. Far from deriving a fully defined correlation among those parameters, the results indicate general trends that can be helpful to drive further investigation, both experimental and numerical in nature.

Item Type: Article
Erschienen: 2022
Creators: Martinelli, Enzo ; Caggiano, Antonio
Type of entry: Bibliographie
Title: Low-Cycle Fatigue of FRP Strips Glued to a Quasi-Brittle Material
Language: English
Date: 2022
Publisher: MDPI
Journal or Publication Title: Materials
Volume of the journal: 14
Issue Number: 24
Collation: 14 Seiten
DOI: 10.3390/ma14247753
Corresponding Links:
Abstract:

This paper aims at further advancing the knowledge about the cyclic behavior of FRP strips glued to quasi-brittle materials, such as concrete. The results presented herein derive from a numerical model based on concepts of based on fracture mechanics and already presented and validated by the authors in previous works. Particularly, it assumes that fracture processes leading to debonding develop in pure mode II, as is widely accepted in the literature. Starting from this assumption (and having clear both its advantages acnd shortcomings), the results of a parametric analysis are presented with the aim of investigating the role of both the mechanical properties of the interface bond–slip law and a relevant geometric quantity such as the bond length. The obtained results show the influence of the interface bond–slip law and FRP bond length on the resulting cyclic response of the FRP-to-concrete joint, the latter characterized in terms of S-N curves generally adopted in the theory of fatigue. Far from deriving a fully defined correlation among those parameters, the results indicate general trends that can be helpful to drive further investigation, both experimental and numerical in nature.

Uncontrolled Keywords: FRP, concrete, debonding, cyclic actions
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute of Construction and Building Materials
Date Deposited: 02 Aug 2024 12:40
Last Modified: 02 Aug 2024 12:40
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