Development and Characterization of C/C-SiC Brake Disc for EMU
A reduced-scale carbon/carbon-SiC brake disc was prepared by chemical vapor infiltration and reactive melt infiltration.The tensile strength,compressive strength and bending strength of disc material were 106 MPa,355 MPa and 195 MPa,respectively.The thermal conductivity in vertical and horizontal directions was 41.1 W/(m⋅℃)and 38.8 W/(m⋅℃),and the thermal conductivity was well coordinated with the strength and toughness.At the same time,the friction and wear shrinkage test of carbon/carbon-SiC brake discs was carried out with the powder metallurgy brake pads.Based on the test results,the finite element simulation model of the heat trans-fer process of the brake disc was established and modified.The test and simulation analysis results show that the wear resistance and heat resistance of carbon/carbon-SiC brake disc were good,and the friction coefficient of the dual pad was stable,and the abrasion loss met the requirements of industry standard.
C/C-SiC brake discfriction-wear testfinite element simulationheat transfer behavior
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