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Wear of brake blocks at tread braking of railway wheels is one of the key factors that control the time period between scheduled train maintenance and hence has a substantial impact on the life cycle cost of the vehicle. Wear simulations using two different numerical models, one thermal model and one thermoelastic model, are presented implementing wear rates for some brake block materials exploiting...
Contact surfaces, subjected to high pressure coupled with low-amplitude oscillation, are used to a great extent in aerospace engine components to reduce vibrations. Relative displacement of contact surfaces coupled with friction force dissipates energy and damps the vibrations. Fretting wear is harmful on interference-fit contacts because the loss of material reduces the normal load and hence, reduces...
Ti–Zr–Mo alloy matrix composites reinforced with α-Al2O3 particles were fabricated by hot pressing. The composites have a low wear rate at elevated temperatures to present an excellent anti-wear performance. Moreover, at 1000°C, the wear rate of the composite only accounts for 19% wear rate of Ti–Zr–Mo alloy, and 8% that of Mo. High hardness, self-lubrication, and low oxidation and volatilization...
High-performance Al 2 O 3 /Mo laminated nanocomposites are potential candidates for space vehicle bearing components because of their excellent self-lubricating ability and mechanical properties. The purpose of this study was to investigate how layer thickness and spacing parameters affected the sliding friction and wear of such Al 2 O 3 /Mo laminated composites against...
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