Development of Aluminum Composite Automotive Brake Rotors

Traditionally, automotive brake rotors are made with cast iron. Besides having economical advantage, cast iron rotor provides many disadvantages due to its weight, such as reduction in fuel efficiency, increase in green house gas emission, and increase in noise, vibration and hardness. With the development of commercial aluminum composites, composite brake rotors are now manufactured. However, the present commercial composite materials are not specifically made for brake application and there are drawbacks. A major drawback is their poor elevated temperature property. In this paper, the unique properties offered by an aluminum composite for brake application is addressed, and an approach to compensate its properties for brake application is highlighted.

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Free Vibration of Coupled Disk-Hat Structures

Volume 7A: 17th Biennial Conference on Mechanical Vibration and Noise ◽

10.1115/detc99/vib-8158 ◽

1999 ◽

Author(s):

Jun-Chul Bae ◽

Jonathan Wickert

Keyword(s):

Free Vibration ◽

Natural Frequencies ◽

Three Dimensional ◽

Phase Relationship ◽

Vibration Modes ◽

Pure Bending ◽

Brake Rotors ◽

Automotive Brake ◽

Ordered Pairs

Abstract The free vibration of disk-hat structures, such as automotive brake rotors, is investigated analytically and through laboratory experimentation. Of particular interest are the role played by the hat element’s depth in influencing the three-dimensional vibration of the disk, and the manner in which the bending and in-plane modes of the disk alone evolve as a hat of increasing depth is incorporated in the model. The lower vibration modes of disk-hat structures are shown to be characterized by the numbers of nodal circles NC and diameters ND present on the disk, as well as the phase relationship between the disk’s transverse and radial displacements due to coupling with the hat element. Such modes map continuously back to the pure bending and in-plane modes of the disk alone, appear in ordered pairs, and can exist at close frequencies. Those characteristics are explored particularly with respect to sensitivities in the disk’s thickness and the hat’s depth with a view towards shifting particular natural frequencies, or minimizing transverse disk motion in certain vibration modes. Results obtained through analysis and measurement of a prototypical disk-hat structure are applied in a case study with a ventilated automotive brake rotor.

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AlSi-SiC Composites for Automotive Brake Rotor

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.835.178 ◽

2020 ◽

Vol 835 ◽

pp. 178-185

Author(s):

Fatma Firouz ◽

Atef Daoud ◽

Malak Abou El-Khair

Keyword(s):

Solution Treatment ◽

Stir Casting ◽

Primary Phase ◽

Casting Method ◽

Sic Particles ◽

Brake Rotor ◽

Eutectic Si ◽

Sic Composites ◽

Brake Rotors ◽

Automotive Brake

This manuscript investigates the Fabrication and Microstructure of Automotive Brake Rotor Made of AlSi-SiC Composites. This work is oriented toward fabrication of automotive brake rotors from Al-9Si and Al-12Si reinforced with 10 and 20% SiC particles using stir-casting method. The brake rotors were subjected to heat treatment. Aging behavior showed that hardness increased with the addition of SiC reinforcements by 104%, comparing to solution treatment condition. Also, the addition of SiC particles accelerates formation of precipitates. Microstructure of brake rotors made of composite revealed uniform distribution of SiC particles, primary phase (⍺-Al) and modified eutectic Si. EDX analysis showed the presence of Al, Mg and O at the interface between matrix and SiC particles.

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A case study on applying creative design concepts to brake rotor design

Journal of Engineering Design and Technology ◽

10.1108/jedt-10-2011-0070 ◽

2016 ◽

Vol 14 (1) ◽

pp. 2-16

Author(s):

S. Vinodh ◽

Sharath Kumar T.

Keyword(s):

Research Work ◽

Creative Design ◽

Content Type ◽

Design Concepts ◽

Braking System ◽

Rotor Design ◽

Brake Rotor ◽

Brake Rotors ◽

Automotive Brake

Purpose – The purpose of this paper is to report a study in which creative design concepts have been applied to automotive brake rotor design. Design/methodology/approach – The literature review on creative design concepts and braking system scenario has been carried out. By studying the existing brake rotors and applying creative design concepts, modified rotor designs have been developed. Findings – The experience gained out of the study indicated that braking efficiency and durability of the braking system can be significantly improved by the adoption of proposed designs. Research limitations/implications – The research has been carried out for an automotive passenger car. The findings of this research work could be extended to similar models of buses and trucks. Practical implications – The usage of the proposed designs reduces the driver’s effort in braking and adds significantly to the life of the rotors. Originality/value – A case study has been reported to indicate the application of creative design concepts for enhancing the efficiency of automotive braking system in cars.

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