Fatigue crack growth analysis of steel elements reinforced with shape memory alloy (SMA)/fiber reinforced polymer (FRP) composite patches

Zheng, Botong; Dawood, Mina

doi:10.1016/j.compstruct.2016.12.077

Cited by 51 publications

(22 citation statements)

References 27 publications

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“…Yet it cannot directly refer to the studies on reinforcing the throughthickness cracks, because: the possible failure modes of using FRP to reinforce surface cracks in metallic structure is unclear, thus its effects on surface crack growth is undefined; surface crack grows as a semi-elliptical shape, the effect of FRP reinforcement on three-dimensional surface crack growth is unclear. For example, in recent years, researcher indicated that the crack-induced debonding is very likely to occur which may generate negative influence on the FRP reinforcement toward the FCGR decrease [21][22][23][24]. While the effectiveness of such failure on FRP reinforced surface cracked metallic structures has not been studied.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on FRP-reinforced surface cracked steel plates subjected to cyclic tension

Jiang

Hopman

et al. 2020

Mechanics of Advanced Materials and Structures

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on FRP-reinforced surface cracked steel plates subjected to cyclic tension

Jiang

Hopman

et al. 2020

Mechanics of Advanced Materials and Structures

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“…[9][10][11][12][13] In recent years, the application of SMAs for the development of adaptive FRPs, especially with thermoset matrix system, has drawn considerable attention within the composite material community compared to thermoplastic matrix system because the processing temperature during the infusion of thermoset matrix is significantly lower compared to the transition temperature of SMA. [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] However, the textile-technical integration of SMAs into the reinforcing fabrics is required in order to fully transmit the force generated by SMAs to adaptive FRPs during their thermal induced activation. The very first attempt at a textile-technical integration of SMAs into reinforcing fabrics by means of tailored fiber placement (TFP) technology was described by the authors.…”

Section: Introductionmentioning

confidence: 99%

Development of shape memory alloy-based adaptive fiber-reinforced plastics by means of open reed weaving technology

Ashir

Cherif

2020

Journal of Reinforced Plastics and Composites

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The functionalization of fiber-reinforced plastics has been improved continuously in recent years in order to broaden their application potential. By using shape memory alloys in fiber-reinforced plastics, adaptive fiber-reinforced plastics can be developed, which in turn can change their shape depending on the activation of shape memory alloys. In order to ensure the proper force transmission from shape memory alloys to fiber-reinforced plastic, these shape memory alloys need to be integrated into the reinforcing fabric. Hence, this paper presents the application of open reed weaving technology for the development of functionalized preforms for adaptive fiber-reinforced plastics. For an optimized shape memory effect during their thermal induced activation, the shape memory alloys were coated with release agent and then integrated into the woven fabric by open reed weaving technology. The hinged width of functionalized preforms was varied from 50 mm to 150 mm. These preforms were infused by a thermosetting resin matrix system with a modifier. Subsequently, the electro-mechanical testing of adaptive fiber-reinforced plastics was executed. Results show that the maximum deformation of adaptive fiber-reinforced plastics was proportional to their hinged width.

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“…They aimed to estimate the applicability of Fe-SMA to NSM strengthening techniques. Zheng and Dawood [24] analyzed fatigue crack growth in steel elements reinforced with SMA and fiber-reinforced polymer composite patches. Gholampour and Ozbakkaloglu [25] studied the compressive behavior of high-strength concrete columns confined by SMA spirals.…”

Section: Introductionmentioning

confidence: 99%

Multi-Step Prestressing with Hybrid SMA Wires

2020

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Prestressing force is induced in reinforced concrete (RC) structures to improve their load-carrying capacity. Generally, the prestressing strand of an RC structure is tensioned using a hydraulic jack, which decreases its workability. In this study, we evaluate the application of prestressing force by using a shape memory alloy (SMA), as has been actively studied in civil engineering. Experiments were conducted to measure the multi-stepwise prestressing force introduced in a hybrid SMA wire composed of two different types of SMA wires. The experimental parameters were determined based on the combinations of the SMA wires and the heating temperatures. The results of the experiments show that the prestressing force was induced in a sequence. The magnitude of the prestressing force generated by the hybrid SMA wire was equal to the sum of the prestressing forces generated by the NiTi50 and NiTi90 SMA wires. In conclusion, this study verified the applicability of the proposed concept of multi-stepwise prestressing by using hybrid SMA wires. Further research is required to measure the effect of prestressing by locally heating the center of a girder with the aim of expanding the applicability of this concept.

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Fatigue crack growth analysis of steel elements reinforced with shape memory alloy (SMA)/fiber reinforced polymer (FRP) composite patches

Cited by 51 publications

References 27 publications

Experimental investigation on FRP-reinforced surface cracked steel plates subjected to cyclic tension

Experimental investigation on FRP-reinforced surface cracked steel plates subjected to cyclic tension

Development of shape memory alloy-based adaptive fiber-reinforced plastics by means of open reed weaving technology

Multi-Step Prestressing with Hybrid SMA Wires

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