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Iron-Based Shape Memory Alloy (Fe-SMA) vs. CFRP for Prestressed Strengthening of Civil Metallic Structures
Iron-based shape memory alloy (Fe-SMA) is a smart material that has been recently engineered and developed for civil engineering applications. The Fe-SMA has become a new reinforcement material for prestressed-strengthening of structures. This article aims to provide the first systematic study on the comparison between these two reinforcement materials with a particular emphasis on conditions imposed in civil engineering. The production procedure, mechanical properties, fatigue, creep/relaxation, corrosion, thermal expansion, high-temperature and fire behavior of the Fe-SMA in comparison with those of carbon fibre-reinforced polymer (CFRP) material are discussed. In the next step, the static and fatigue behavior of different structural components strengthened by prestressed CFRPs or activated Fe-SMAs are explained. Finally, a cost analysis is carried out to compare the two strengthening solutions (with Fe-SMA and CFRP) for prestressed-strengthening of 6.4-m girders. The cost comparison revealed that although the current price of the Fe-SMA strips is higher than that of the normal modulus CFRP plates, both of the strengthening solutions are found to be almost equivalent from a cost-performance point of view, when the achievable prestressing force and the cost of the mechanical clamping systems are taken into consideration.
Iron-Based Shape Memory Alloy (Fe-SMA) vs. CFRP for Prestressed Strengthening of Civil Metallic Structures
Iron-based shape memory alloy (Fe-SMA) is a smart material that has been recently engineered and developed for civil engineering applications. The Fe-SMA has become a new reinforcement material for prestressed-strengthening of structures. This article aims to provide the first systematic study on the comparison between these two reinforcement materials with a particular emphasis on conditions imposed in civil engineering. The production procedure, mechanical properties, fatigue, creep/relaxation, corrosion, thermal expansion, high-temperature and fire behavior of the Fe-SMA in comparison with those of carbon fibre-reinforced polymer (CFRP) material are discussed. In the next step, the static and fatigue behavior of different structural components strengthened by prestressed CFRPs or activated Fe-SMAs are explained. Finally, a cost analysis is carried out to compare the two strengthening solutions (with Fe-SMA and CFRP) for prestressed-strengthening of 6.4-m girders. The cost comparison revealed that although the current price of the Fe-SMA strips is higher than that of the normal modulus CFRP plates, both of the strengthening solutions are found to be almost equivalent from a cost-performance point of view, when the achievable prestressing force and the cost of the mechanical clamping systems are taken into consideration.
Iron-Based Shape Memory Alloy (Fe-SMA) vs. CFRP for Prestressed Strengthening of Civil Metallic Structures
Lecture Notes in Civil Engineering
Ilki, Alper (editor) / Ispir, Medine (editor) / Inci, Pinar (editor) / Ghafoori, E. (author) / Hosseini, A. (author) / Michels, J. (author) / Izadi, M. R. (author) / Pellissier, E. (author)
International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering ; 2021 ; Istanbul, Turkey
10th International Conference on FRP Composites in Civil Engineering ; Chapter: 185 ; 2139-2153
2021-11-27
15 pages
Article/Chapter (Book)
Electronic Resource
English
| British Library Online Contents | 2009
| British Library Online Contents | 2014