Novel Graphene Allocating Carbon–Copper Ratio Method for the Rail Vehicle Propulsion System Ground Carbon Brush

Huang, Liang-Yin; Liu, Hwa‐Dong; Lu, Shiue‐Der; Hsu, Chih-Ming

doi:10.1109/access.2022.3174572

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…First, compare three materials of carbon brushes, namely copper carbon, stainless steel, and nickel carbon. Second, ref [27] and [28] materials are both copper carbon, but their copper amount is 10 % and 50 %, respectively, so the characteristic is different. Finally, the proposed GBNC generates graphene and it has good conducting efficiency and wear resistance.…”

Section: Introductionmentioning

confidence: 99%

New Graphene-Based on Nickel-Carbon Compounding Applied to Carbon Brushes of Traction Motors in Subway Vehicles

Huang,

Lu,

Liu

2023

IEEE Access

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This study developed a novel graphene process technology based on nickel-carbon compounding. This process can be applied to carbon brushes of traction motors in subway vehicles. We heated nickel metal to 1000 ℃, and multilayer graphene film was deposited over a large area. The graphenebased nickel carbon (GBNC) was tested using an energy dispersive spectrometer (EDS) and Raman spectrometer, with a G peak of 1580 cm −1 and a 2D peak of 2750 cm −1 . The peak intensities were 2887 cm −1 and 2275 cm −1 , respectively. The findings verified that graphene produced using the nickel-carbon compounding process technology has typical graphene characteristics. A GBNC carbon brush was installed on a traction motor during the actual measurement. The proposed GBNC carbon brush cost was 20 % lower than the traditional graphite carbon brush. Moreover, the wear loss was 30 % lower. The findings suggest that the graphene performance is superior to traditional graphite carbon brushes regarding conducting efficiency, thermal conductivity, and lubricating properties. Therefore, the GBCN carbon brush proposed in this study has good performance. The GBNC carbon brush failure rate is lower than the traditional graphite carbon brush. Using the GBNC carbon brush enhances traction motor stability. It also reduces maintenance costs, which improves the efficiency of the electric multiple unit (EMU) propulsion systems to enhance the subway company's service quality, equipment quality, and corporate image.INDEX TERMS Graphene-based nickel carbon; graphite, electric multiple units, traction motor, subway vehicles.

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Section: Introductionmentioning

confidence: 99%

New Graphene-Based on Nickel-Carbon Compounding Applied to Carbon Brushes of Traction Motors in Subway Vehicles

Huang,

Lu,

Liu

2023

IEEE Access

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A Novel CSAHP Approach to Assess the Priority of Maintenance Work Outsourced by a Metro Company

2022

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To lower maintenance costs and improve a metro company’s competitiveness, this research came up with an innovative technique using a considering sensitivity and analytic hierarchy process (CSAHP). Along with interviews with managers and workers at the Taipei Rapid Transit Corporation, this study was able to undertake quantitative analysis. To determine which subsystems and metro lines should be prioritized for outsourcing based on the CSAHP framework, we used the criterium decision plus (CDP) program. This research adds to the existing body of knowledge by advancing the existing analytic hierarchy process (AHP) technique and recommending the CSAHP strategy for assessment. According to the findings, the power supply system was the most in need of outsourcing, followed by air conditioning, firefighting, and elevator systems. When considering which of the four metro lines to outsource first, the blue line came out on top, followed by the red, green, and brown lines. By prioritizing the outsourcing of the power supply system as a result of this research, the Taipei Rapid Transit Corporation may cut the system’s maintenance expenditures from USD 1.57 million to USD 1.33 million, saving 15% on maintenance costs. Applying these findings can improve the economic benefits of outsourced maintenance for the Taipei Rapid Transit Corporation.

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Novel Graphene Allocating Carbon–Copper Ratio Method for the Rail Vehicle Propulsion System Ground Carbon Brush

Cited by 2 publications

References 29 publications

New Graphene-Based on Nickel-Carbon Compounding Applied to Carbon Brushes of Traction Motors in Subway Vehicles

New Graphene-Based on Nickel-Carbon Compounding Applied to Carbon Brushes of Traction Motors in Subway Vehicles

A Novel CSAHP Approach to Assess the Priority of Maintenance Work Outsourced by a Metro Company

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