Effect of perforated structure of friction block on the wear, thermal distribution and noise characteristics of railway brake systems

Tang, Bin; Mo, Jiliang; Xu, Jiang; Wu, Yuanke; Zhu, Minhao; Zhou, Zhijun

doi:10.1016/j.wear.2019.01.016

Cited by 46 publications

(14 citation statements)

References 35 publications

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“…The temperature values, which are instantaneously reached during wear and described as the flash temperature, are considerably higher than the average temperature values of this contact zone. This causes the bronze to exhibit a significant amount of adhesive behavior in the later stages of wear and finally to plaster the bronze to the surface [24,61,67]. to 40 wt% is beneficial for wear rate characteristics.…”

Section: Interpretation Of Experimental Results and Parameter Optimization For Temperature Changementioning

confidence: 99%

“…Moreover, it has been observed that the porous structures in the MMCs' structure play a vital role in reducing friction on the surface, both by closing with the wearing particles and by the lubricating effect of the eroded spheroidal graphite (Figure 3b-f). Thus, less wear occurs in the friction area, which is one of the most critical parameters that increases the lifetime of the bearing material under harsh service conditions [60][61][62]. The lubrication effect of dense spheroidal graphite in GGG-40 is also beneficial for the temperature differences in the contact area during wear.…”

Section: Sem Images/microstructuresmentioning

confidence: 99%

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Towards Analysis and Optimization for Contact Zone Temperature Changes and Specific Wear Rate of Metal Matrix Composite Materials Produced from Recycled Waste

et al. 2021

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Tribological properties are important to evaluate the in-service conditions of machine elements, especially those which work as tandem parts. Considering their wide range of application areas, metal matrix composites (MMCs) serve as one of the most significant materials equipped with desired mechanical properties such as strength, density, and lightness according to the place of use. Therefore, it is crucial to determine the wear performance of these materials to obtain a longer life and to overcome the possible structural problems which emerge during the production process. In this paper, extensive discussion and evaluation of the tribological performance of newly produced spheroidal graphite cast iron-reinforced (GGG-40) tin bronze (CuSn10) MMCs, including optimization, statistical, graphical, and microstructural analysis for contact zone temperature and specific wear rate, are presented. For this purpose, two levels of production temperature (400 and 450 °C), three levels of pressure (480, 640, and 820 MPa), and seven different samples reinforced by several ingredients (from 0 to 40 wt% GGG-40, pure CuSn10, and GGG-40) were investigated. According to the obtained statistical results, the reinforcement ratio is remarkably more effective on contact zone temperature and specific wear rate than temperature and pressure. A pure CuSn10 sample is the most suitable option for contact zone temperature, while pure GGG-40 seems the most suitable material for specific wear rates according to the optimization results. These results reveal the importance of reinforcement for better mechanical properties and tribological performance in measuring the capability of MMCs.

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Section: Interpretation Of Experimental Results and Parameter Optimization For Temperature Changementioning

confidence: 99%

Section: Sem Images/microstructuresmentioning

confidence: 99%

Towards Analysis and Optimization for Contact Zone Temperature Changes and Specific Wear Rate of Metal Matrix Composite Materials Produced from Recycled Waste

et al. 2021

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“…The UIC 541-3 leaflet [ 5 ] includes general conditions for the certification of the brake pads manufactured from different materials. Alongside standard test stands, the reduced-scale dynamometers are used to study tribological phenomena related to the railway braking [ 6 ]. Researchers have noticed that the reproduction of representative full-scale conditions of thermal loading generated by friction at such a test rig is difficult; nevertheless, obtained results show that the reduced-scale tests may be representative [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Analytical Model of the Frictional Heating in a Railway Brake Disc at Single Braking with Experimental Verification

et al. 2022

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A one-dimensional thermal problem of friction was formulated, taking into account the contact pressure increase at the beginning of the process. The obtained solution to this problem allows for the quick calculation of the transient temperature distribution in a railway brake disc during single braking application. In order to validate the developed model, the experimental tests were performed for two friction pairs consisting of the cast iron brake disc and pads comprising two composite materials. Theoretical results were compared with the data measured by thermocouples embedded in the brake disc during the full-size dynamometer tests. The maximum temperature values found based on the analytical solution are convergent with the corresponding empirical data. The consistency of the results obtained for two friction couples demonstrates the usefulness of the proposed computational model.

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“…There is another group of studies that have studied the issue of railway noise and vibration more from the perspective of infrastructure and specifications of railways and trains than the study of human characteristics and reactions (Aleknaite & Grubliauskas, 2018 ; Tang et al, 2019 ). And some studies have looked at both the human response and the infrastructure together (Michali et al, 2021 ).…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Effects of railway noise and vibrations on dissatisfaction of residents: case study of Iran

Maljaee

Sameni

Aghaei

2022

Environ Dev Sustain

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In this study, the effects of noise and vibrations caused by railways on the lives of residents around the railways in districts 17 and 18 of Tehran, the capital of Iran which amounts to about 700,000 people, are investigated. In the first stage the actual level of noise was measured at various points which showed above standard levels. Afterward, the authors developed a questionnaire and the survey was conducted from 376 residents. The findings of this study show that the most important factor for the residents adjacent to the railway line is the need for action by the country's railway authorities to reduce and control the adverse effects of noise and vibration. Also, the analysis of inferential statistics performed by chi-square test shows that the variables of gender and proximity of residence or workplace or both to the railway do not affect any of the railway noise or vibration dissatisfaction. The age variable also has no effect on noise dissatisfaction but does impact on vibration. Finally, distance from the railway affects both disaffection from noise and vibration.

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Effect of perforated structure of friction block on the wear, thermal distribution and noise characteristics of railway brake systems

Cited by 46 publications

References 35 publications

Towards Analysis and Optimization for Contact Zone Temperature Changes and Specific Wear Rate of Metal Matrix Composite Materials Produced from Recycled Waste

Towards Analysis and Optimization for Contact Zone Temperature Changes and Specific Wear Rate of Metal Matrix Composite Materials Produced from Recycled Waste

Analytical Model of the Frictional Heating in a Railway Brake Disc at Single Braking with Experimental Verification

Effects of railway noise and vibrations on dissatisfaction of residents: case study of Iran

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