COMPONENT DEGRADATION: BRAKING SYSTEM. VOLUME 1 REPORT

The program determined the effects of selected modes of disc- and drum-brake component degradation on vehicle braking performance. The results are used to recommend brake-component and system-performance limits of degradation. In this program an inertial brake dynamometer was used to evaluate physically the effects of thin friction materials, friction-material wear characteristics, effects of friction material contamination, and the effects of heat spots, rotor scoring, out-of-round drums and disc lateral runout. Also physically evaluated were sticky wheel cylinders. The other major tasks were the evaluation of side-to-side brake imbalance with vehicle-handling models and vehicle test conducted with sample drivers and the analytical determination of inspection criteria for brake system proporting (front-to-rear ratio) and brake pedal reserve. /NTIS/

• Supplemental Notes:
  • See also PB-219 378, PB-219 379, PB-219 380, and PB-225 247.
• Corporate Authors:

  Bendix Corporation

  20800 Ten and One-Half Mile Road
  Southfield, MI  United States  48076

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • KERANEN, T W
  • Schwartz, H W
  • Facko, M J
  • Tarr, W R
  • Leung, C K
• Publication Date: 1974-11

Media Info

• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Brake linings; Brake pedals; Brakes; Braking; Disc brakes; Dynamometers; Friction; Inspection; Motor vehicles; Vehicle components; Vehicle performance
• Uncontrolled Terms: Drum brakes
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00082927
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: BRL/TR-74-7178 Summ Rpt.
• Contract Numbers: DOT-HS-090-3-710
• Files: NTIS, TRIS, USDOT
• Created Date: Mar 26 1975 12:00AM