Mechanical and tribological behaviors of copper metal matrix composites for brake pads used in high-speed trains

Xiao, Yao; Zhang, Zhongyi; Yao, Pingping; Fan, Kunyang; Zhou, Haibin; Gong, Taimin; Zhao, Lin; Deng, Minwen

doi:10.1016/j.triboint.2017.11.038

Cited by 190 publications

(54 citation statements)

References 18 publications

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“…Moreover, here explained the friction coefficient losses based on the changes in the friction layer. To enhance the braking system with ceramic procedure, Yelong Xiao et al [19] proposed Copper Metal Matrix Composite (Cu-MMC) for the brake pads in the high-speed trains. Moreover, it is a powder metallurgy method based braking system.…”

Section: O Almentioning

confidence: 99%

“…Moreover, the communication of the buffalo's is studied under "waaa" and "maaa" sounds. Thus the ABO calculation arbitrarily initializing in (18) the buffalo to location into the search space, it evaluates the exploitation and exploitation fitness respectively using (19) to each buffalo to determine the herd's best animal as well as individual buffalo personal best location Where p is the symbol of the "maaa" sound of the buffalo, w is the symbol of the "waaa" sound of the buffalo and  ab is the buffalo move the explore curve. Consequently, the probability of buffalo d is leaving from the vertex of a and b .…”

Section: B Moabo Algorithmmentioning

confidence: 99%

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Innovative and Efficient Electric Braking System In High-Speed Trains using Proportional Resonant Controller

Ravikumar*

2019

IJITEE

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The high-speed trains are eight times more efficient than traditional trains because it significantly operates faster than the other trains; however, the train accidents are happened as because of its poor braking system. From this reason, effective braking system control techniques are developed. In this paper, the electric brake regenerative system is introduced to control the high-speed train. Therefore the braking system of a high-speed train is modeled in Brushless Direct Current (BLDC) motor, which is controlled by the gain of Proportional Resonant (PR) controller. Subsequently, the parameters of the controller and error percentage from the controller in the braking system are optimized using Multi-Objective African Buffalo Optimization (MOABO). The developed controller in braking system stability is analyzing by the Lyapunov function. The results of the braking system are validating by the torque and speed of the high-speed train braking system. Furthermore, the proposed high-speed braking system control is compared with existing control techniques in a high-speed train.

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Section: O Almentioning

confidence: 99%

Section: B Moabo Algorithmmentioning

confidence: 99%

Innovative and Efficient Electric Braking System In High-Speed Trains using Proportional Resonant Controller

Ravikumar*

2019

IJITEE

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“…Fiber-reinforced organic composites find wide applications as brake friction materials to control the acceleration/deceleration in a range of vehicles, including light motor vehicle to heavy-duty trucks to railroad wagon and coaches [1]. The tailor-ability of properties of such composites is useful in enhancing performance of the friction composites.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of tribological and thermo-mechanical properties of phenolic resin friction composites by improving interactions between elastomeric phase and matrix resin

2020

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New elastomer-modified brake friction composites with the identical composition, but differing in the type of rubber, were developed by altering polar/non-polar elastomeric phases into the phenolic resin matrix. Effect of dispersion and interaction of the polar/non-polar rubbers with the matrix resin on dry sliding wear characteristics of the friction composites was investigated using a laboratory-scale pin-on-disc tribometer. The composites were prepared by hot mixing followed by compression molding and post-curing at a high temperature. Coefficient of friction (COF) and specific wear rate of the composites sliding against a cast-iron disc were measured and analyzed. Polar acrylonitrile-butadiene rubber (NBR, both powder, and bale rubber), and non-polar styrene-butadiene rubber (SBR) and ethylene-propylene-diene monomer (EPDM) were used with the phenolic resin where rubber islands and its polarity played the key role in delayed stress dissipation, while the hard matrix phase contributed to the intrinsic strength of the composites. This work describes how the distribution and interaction of polar and non-polar rubbers with the matrix resin influence the performance of brake friction composites. NBR (powder)-phenolic composite showed the highest stable average COF of 0.52 as compared to 0.36 for EPDM-based composite. NBR (powder)-based composite also exhibited ~1.5 times better specific wear rate (4.9 × 10 −3 mm 3 N −1 m −1) than EPDM-based composite (7.2 × 10 −3 mm 3 N −1 m −1). However, EPDM rubber-based composite showed a significant enhancement in thermal conductivity (0.43 W/m K). Morphological analyses revealed that the dispersion of rubber phase in phenolic matrix played a significant role in transforming the wear mechanism from abrasive to adhesive.

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“…Especially in the eld of electronics and aerospace, the materials are required to have the properties of oxidation resistance, high-temperature resistance and wear resistance [1][2][3][4]. Although metal and alloy materials possess good toughness, machinability and conductivity, their wear resistance, corrosion resistance and high-temperature resistance are poor [5][6][7]. Ceramic materials are widely used due to making up for the de ciency of metals and alloys.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Tribological Behaviors of as-sprayed Al2O3 Coatings With the Effects of MoS2 Lubricant and External Loads

Deng

Tang

et al. 2020

Preprint

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The Al2O3-MoS2 ceramic-based lubricating coating was prepared via introducing MoS2 dry film lubricant into the pores and cracks of thermal-sprayed Al2O3 coating by facial paint spraying method. The microstructure, mechanical properties and tribological behaviors of the as-received Al2O3-MoS2 coating were thoroughly evaluated. The results illustrated that MoS2 was mainly concentrated on the shallow surface of the Al2O3 coating, and thus more uniform, more compact and smoother Al2O3-MoS2 coating was obtained. Meanwhile, the mechanical properties of the Al2O3 coating did not change significantly after the introduction of MoS2. The tribological experiments illustrated that compared with the Al2O3 coating, the friction coefficient and specific wear rate of the Al2O3-MoS2 coating under different loads were greatly reduced due to the generation of the lubricating layer. Especially under the load of 5 N, the friction coefficient was as low as 0.36, and the wear rate (1.49×10-5 mm3×(N×m)-1) was almost 17 times lower than that of Al2O3 coating (2.53×10-4 mm3×(N×m)-1). This research established a new and simple way to prepare ceramic-based self-lubricating coatings by using temperature-sensitive solid lubricants.

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Mechanical and tribological behaviors of copper metal matrix composites for brake pads used in high-speed trains

Cited by 190 publications

References 18 publications

Innovative and Efficient Electric Braking System In High-Speed Trains using Proportional Resonant Controller

Innovative and Efficient Electric Braking System In High-Speed Trains using Proportional Resonant Controller

Enhancement of tribological and thermo-mechanical properties of phenolic resin friction composites by improving interactions between elastomeric phase and matrix resin

Investigation on the Tribological Behaviors of as-sprayed Al2O3 Coatings With the Effects of MoS2 Lubricant and External Loads

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Mechanical and tribological behaviors of copper metal matrix composites for brake pads used in high-speed trains

Cited by 190 publications

References 18 publications

Innovative and Efficient Electric Braking System In High-Speed Trains using Proportional Resonant Controller

Innovative and Efficient Electric Braking System In High-Speed Trains using Proportional Resonant Controller

Enhancement of tribological and thermo-mechanical properties of phenolic resin friction composites by improving interactions between elastomeric phase and matrix resin

Investigation on the Tribological Behaviors of as-sprayed Al2O3&nbsp;Coatings With the Effects of MoS2&nbsp;Lubricant and External Loads

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Investigation on the Tribological Behaviors of as-sprayed Al2O3 Coatings With the Effects of MoS2 Lubricant and External Loads