A Composite Brake Rotor Assembly by Utilizing Replaceable Friction Surfaces
Document Type
Oral Presentation
Campus where you would like to present
SURC Ballroom B/C/D
Start Date
21-5-2015
End Date
21-5-2015
Keywords
Temperature, Replaceable, Braking
Abstract
This project investigated a proof of concept design involving a rotor fabricated from aluminum with replaceable friction surfaces with greater or equal performance characteristics in order to reduce cost and maintenance. The replaceable friction surfaces provide a means to mitigate cost to the end user. The structure is constrained by the dimensions, 11.75” diameter and 1.25” width, and serves as a direct replacement rotor for a circle track racecar. Analyses provide a direct comparison in static mass, moments of inertia, and forced convection thermal calculations in order to determine if the concept was viable. Requirements for a successful design were a 22 percent reduction in total rotating mass, resist a linear deceleration rate of eight meters per second, and the centripetal forces of an angular velocity of 315 radians per second. Off-car testing revealed a four pound reduction in static rotor mass and achieved a 34 percent reduction in the moment of inertia. On-car testing involved data logging multiple laps at a local racetrack and displayed a higher theoretical peak temperature than the conventional design. For the composite structure, the heat was rejected earlier in the cool-down phase of the lap resulting in a higher steady state of absorption/radiation characteristics. Means of monitoring the performance are by way of a global positioning system (GPS) accelerometer and remote mounted infrared guns mounted to each hub. This design offers all the function of a conventional rotor with a 42 percent reduction in replacement cost and a 18 percent reduction in replacement time.
Recommended Citation
Evert, John, "A Composite Brake Rotor Assembly by Utilizing Replaceable Friction Surfaces" (2015). Symposium Of University Research and Creative Expression (SOURCE). 22.
https://digitalcommons.cwu.edu/source/2015/constructedobjects/22
Poster Number
7
Department/Program
Engineering Technologies, Safety, & Construction
Additional Mentoring Department
Engineering Technologies, Safety, & Construction
A Composite Brake Rotor Assembly by Utilizing Replaceable Friction Surfaces
SURC Ballroom B/C/D
This project investigated a proof of concept design involving a rotor fabricated from aluminum with replaceable friction surfaces with greater or equal performance characteristics in order to reduce cost and maintenance. The replaceable friction surfaces provide a means to mitigate cost to the end user. The structure is constrained by the dimensions, 11.75” diameter and 1.25” width, and serves as a direct replacement rotor for a circle track racecar. Analyses provide a direct comparison in static mass, moments of inertia, and forced convection thermal calculations in order to determine if the concept was viable. Requirements for a successful design were a 22 percent reduction in total rotating mass, resist a linear deceleration rate of eight meters per second, and the centripetal forces of an angular velocity of 315 radians per second. Off-car testing revealed a four pound reduction in static rotor mass and achieved a 34 percent reduction in the moment of inertia. On-car testing involved data logging multiple laps at a local racetrack and displayed a higher theoretical peak temperature than the conventional design. For the composite structure, the heat was rejected earlier in the cool-down phase of the lap resulting in a higher steady state of absorption/radiation characteristics. Means of monitoring the performance are by way of a global positioning system (GPS) accelerometer and remote mounted infrared guns mounted to each hub. This design offers all the function of a conventional rotor with a 42 percent reduction in replacement cost and a 18 percent reduction in replacement time.
Faculty Mentor(s)
Charles Pringle