An Experimental Investigation of Brake Rotor DTV Under Laboratory Conditions

The present study shows an effect of low pressure wear on brake rotor disc thickness variation (DTV) for two design level calipers on a single design level brake rotor. All tested components are from a single vehicle platform and all friction pads used Non-Asbestos Organic (NAO) materials. Seventeen separate brakes-off DTV tests were performed on a brakes-off DTV dynamometer under laboratory conditions. The results indicated that the two design levels develop wear at different rates. DTV measurements during the test support this observation.