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Measurement of the dynamic centre of pressure of the disc/pad interface during a braking operation

Fieldhouse, John D., Ashraf, Naveed and Talbot, Chris J. (2009) Measurement of the dynamic centre of pressure of the disc/pad interface during a braking operation. International Journal of Vehicle Design, 51 (1/2). pp. 73-104. ISSN 0143-3369

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Abstract

This paper demonstrates the influence of the trailing end of the piston, or inboard, pad on the propensity of a brake to generate audible squeal. The unique technique was employed to measure the dynamic CoP at the pad/disk interface during a normal braking operation. This novel technique uses an embedded pressure sensitive film within the pad. The paper also presents the co-planar analysis of the pad/caliper contact regions and its influence on the position of the disk/pad CoP. The analysis shows how the trailing end of the piston pad influences the position of the CoP and goes on to explain why the centre moves as the pad abutment vibrates against the abutment. The paper includes additional work with a 12-piston opposed caliper where the initial CoP may be varied both along the pad and radially. Results show a very definite movement of the CoP as the brake pressure is increased.

Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Schools: School of Computing and Engineering
School of Computing and Engineering > Automotive Engineering Research Group
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Depositing User: Naveed Ashraf
Date Deposited: 01 Nov 2012 13:41
Last Modified: 27 Jun 2013 09:32
URI: http://eprints.hud.ac.uk/id/eprint/15545

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