Research on the Heating Process of CFRP Circular Tubes Based on Electromagnetic Induction Heating Method

Xu, Jiazhong; Gu, Yunfei; Fu, Tianyu; Zhang, Xiaobing; Zhang, Hao

doi:10.3390/polym15143039

Cited by 2 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fiber-reinforced polymers (FRPs) are a promising steel alternative because they are high-strength, lightweight, immune to corrosion, and electromagnetically transparent [ 3 , 4 , 5 , 6 ]. Still, the relatively low resistance to ultraviolet radiation, elevated temperatures, and humidity reduce the mechanical performance of FRP materials with time [ 7 , 8 , 9 ]; the cycling loads complicate the issue, reducing the mechanical resistance of the reinforcement systems even more [ 10 , 11 ]. Regarding FRP bars, most experimental works consider the pull-out behavior under cyclic loads, e.g., Mohamed et al [ 12 ], Kim and Lee [ 13 ], Liu X. et al [ 14 ], Shen et al [ 15 ], Xiao et al [ 16 ], Shi et al [ 17 ], and Pan et al [ 18 ], which could transform into the structural analysis.…”

Section: Introductionmentioning

confidence: 99%

Quantifying the Residual Stiffness of Concrete Beams with Polymeric Reinforcement under Repeated Loads

et al. 2023

View full text Add to dashboard Cite

Current technology development ensures a variety of advanced materials and options for reinforcing concrete structures. However, the absence of a uniform testing methodology complicates the quantification and comparative analysis of the mechanical performance of the composite systems. The repeated mechanical loads further complicate the issue. This research extends the recently developed residual stiffness assessment concept to the repeated loading case. It provides an engineer with a simplified testing layout and analytical model to quantify the residual flexural stiffness of standardized laboratory specimens subjected to repeated cycling loads. This model explicitly relates the particular moment and curvature values, requiring neither iterative calculations nor the load history. Thus, this feature allows residual stiffness quantification under repeated loading conditions, including complete reloading of the beam samples imitating the structural strengthening procedure; the proposed technique is equally efficient in quantifying the residual stiffness of the beam samples with any combinations of fiber-reinforced polymer (FRP) reinforcements, i.e., embedded bars, near-surface-mounted strips, and externally bonded sheets. This study employs 12 flexural elements with various reinforcement and loading layouts to illustrate the proposed methodology’s efficiency in quantifying the residual strength of the tension concrete, which estimates the efficiency of the reinforcement system. The explicit quantifying of the residual resistance of the FRP reinforcement systems under repeated load cycles describes the essential novelty of this work.

show abstract

Section: Introductionmentioning

confidence: 99%

Quantifying the Residual Stiffness of Concrete Beams with Polymeric Reinforcement under Repeated Loads

et al. 2023

View full text Add to dashboard Cite

show abstract

A New Process for Efficient Non-Destructive Metal-Activated Composite Plating of Ni-P-Al2O3 on Titanium Base and Its Performance Research

Cui,

Gao,

et al. 2024

Coatings

View full text Add to dashboard Cite

A new high efficient and non-destructive mental activation process of electroless composite plating was proposed. The process utilized electromagnetic induction equipment to heat the titanium alloy substrate and used its energy to complete the activation process, which could successfully attach the nickel nanoparticles firmly to the surface of the titanium alloy; at the same time, the process pre-activated Al2O3 nanoparticles and added the activated nanoparticles to the plating solution. In the process of plating, the activated titanium substrate was used as the catalytic center of electroless nickel plating (ENP) for electroless composite plating. The new activation process avoided complicated traditional processes such as acid etching and zinc dipping. Such traditional processes require huge doses of chemicals, including various strong acids, so improper waste liquid treatment will cause harm to the environment. The important parameters of the process were optimized by orthogonal experiments. A scanning electron microscope (SEM), an X-ray photoelectron spectroscopy (XPS), an energy dispersive spectrometer (EDS), thermal shock experiments and friction and wear experiments were used to characterize and analyze the surface morphology, composition, binding force and friction coefficient of the coating, and analyze the coating quality by measuring the plating rate and the thickness of the coating. The results showed that the rate of electroless composite plating increased with the increase in Al2O3 nanoparticle concentration. When the concentration of Al2O3 nanoparticles reached 1.5 g/L, the ENP rate decreased with the increase in Al2O3 nanoparticle concentration. The adhesion of the sample was evaluated by the scratch test, which showed that the binding grade of the sample was 0, and the Vickers hardness was 688.5 HV. Results showed that the coating produced by this new process has excellent performance. Therefore, the process is an environmentally friendly and fast activation composite plating process.

show abstract

Research on the Heating Process of CFRP Circular Tubes Based on Electromagnetic Induction Heating Method

Cited by 2 publications

References 23 publications

Quantifying the Residual Stiffness of Concrete Beams with Polymeric Reinforcement under Repeated Loads

Quantifying the Residual Stiffness of Concrete Beams with Polymeric Reinforcement under Repeated Loads

A New Process for Efficient Non-Destructive Metal-Activated Composite Plating of Ni-P-Al2O3 on Titanium Base and Its Performance Research

Contact Info

Product

Resources

About