EFFECTS OF DISK MATERIAL SELECTION ON DISK BRAKE ROTOR CONFIGURATION

Due to the recent requirements of FMVSS-121 for improvements in heavy vehicle braking capabilities, the high torque caliper type disk brake is emerging as the "superior brake". Caliper disk brakes not only possess high linear torque capabilities but also excellent directional stability wheel to wheel. However, the high torque capabilities result in high energy input to the disk. This high energy produces premature failure in the traditionally used cast iron ventilated disk in the form of "temperature induced cracking". This paper will discuss the thermal mechanisms that produce "disk cracking" and how disk material selection affects the disk configuration. /GMRL/

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Rainbolt, J D
• Publication Date: 1975-8

Media Info

• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Brakes; Design; Disc brakes; Failure; Fracture mechanics; Heavy vehicles; Materials; Thermal stresses; Torque
• Subject Areas: Design; Highways; Materials; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00130773
• Record Type: Publication
• Report/Paper Numbers: SAE #750733
• Files: TRIS
• Created Date: Apr 21 1976 12:00AM