An Investigation of the Pad/Disc Dynamic Centre of Pressure using a 12 Piston Opposed Caliper
Date Published: 2007-10-07
Paper Number:2007-01-3960
DOI: 10.4271/2007-01-3960
Citation:
Fieldhouse, J., Ashraf, N., and Talbot, C., "An Investigation of the Pad/Disc Dynamic Centre of Pressure using a 12 Piston Opposed Caliper," SAE Technical Paper 2007-01-3960, 2007, doi:10.4271/2007-01-3960.
Pressure sensitive film embedded into the body of a pad friction compound is a unique technique used to measure the dynamic centre of pressure at the pad/disc interface during a normal braking operation. This paper uses of a modified 12 piston opposed caliper where the initial centre of pressure may be varied both along the pad and radially. Results show a very definite movement of the centre of pressure towards the centre of the pad as the brake pressure is increased. In addition it is seen that a leading centre of pressure (CoP) will result in noise whereas a trailing CoP gives a quiet brake. Equally a CoP towards the inner edge of the pad increases noise propensity whereas towards the outer edge a quiet brake. The results also show little influence on the CoP with disc speed.
Purchase more technical papers and save! With TechSelect,
you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
Learn more >
