Performance assessment of aluminium composite material for automotive brake rotor
Application of composite material for brake rotor has the potential to improve braking performance due to its attractive properties when compared to cast iron material. Aluminium composite has superior specific strength, higher coefficient of thermal expansion/heat dissipation rate with low mass...
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Format: | Article |
Language: | English |
Published: |
Inderscience Enterprises Ltd.
2014
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Online Access: | http://irep.iium.edu.my/39869/ http://irep.iium.edu.my/39869/ http://irep.iium.edu.my/39869/1/P86_2014_A_Mumin.pdf |
Summary: | Application of composite material for brake rotor has the potential to
improve braking performance due to its attractive properties when compared to
cast iron material. Aluminium composite has superior specific strength, higher
coefficient of thermal expansion/heat dissipation rate with low mass density.
These characteristics possess the tendency to influence undesirable conditions
during braking. In this study, composite brake rotor was fabricated using stir
casting process and performance assessment was conducted with a passenger
car brake system setup. The rotor achieved 50% weight reduction and the
braking result reveals that composite rotor exhibited uniform thermal trend with
25% heat dissipation rate for braking pressure within the range of 1.5–2.0 MPa
over cast iron. The contour trend of cast iron rotor exhibited high temperature
zone which gives rise to formation of intermittent hot spot which is detrimental
to braking conditions. Simulation modelling analysis showed good agreement
with actual operating test measurements. Conclusively, composites are
commercially viable and feasible to replace the existing cast iron material.
Keywords: brake rotor; composite; performance assessment; weight reduction;
modelling; stir casting; heat dissipation. |
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