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Procedure Improvements for Brake Burnish and Wear Testing
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 24, 2013 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The commercial vehicle industry has seen regulations create new requirements over the last few years. Reductions to stopping distance, improvements to vehicle emissions, and the overall need for lighter weight vehicles has caused the commercial vehicle industry to look for new solutions to meet these needs. One such solution is light-weight aluminum metal matrix composite (MMC) brake drums. Aluminum MMC brake drums create the opportunity to reduce weight, lower brake temperatures, improve brake life cycle, and improve brake performance. During the evaluation of these aluminum MMC components it has been seen that existing procedures do not create accurate comparisons for this new material. Current procedures were designed and implemented for cast iron braking solutions. This paper will outline two procedures; FMVSS121 dynamometer burnishing and SAE J2115 wear performance testing, that do not allow direct comparisons from brake system to brake system to be made. These test procedures utilize initial brake temperatures (IBT) instead of duty cycle to compare performance. This paper will present an alternative procedure that utilizes duty cycle based on cast iron brake components. In other words this duty cycle allows the braking energy to become the controlling feature of the test and allows IBT to become a dependent variable. This duty cycle allows an effective comparison to be made between multiple brake systems. This paper will specifically compare cast iron brakes and aluminum MMC brakes, but comparisons can also be made with commercial vehicle rotor systems. Data will be presented that shows the comparable wear when multiple brake systems are subjected to the same duty cycle.
|Ground Vehicle Standard||Brake Lining Quality Test Procedure|
|Ground Vehicle Standard||Brake Force Distribution Field Test Procedure for Truck and Bus|
|Technical Paper||Comparative Testing for Aftermarket (Secondary Item) Truck Brake Components by the US Army and Industry Partners|
CitationKero, M., "Procedure Improvements for Brake Burnish and Wear Testing," SAE Technical Paper 2013-01-2350, 2013, https://doi.org/10.4271/2013-01-2350.
Data Sets - Support Documents
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- Buckman , L.C. Commercial Vehicle Braking Systems: Air Brakes, ABS and Beyond Society of Automotive Engineers, Inc. Warrendale, PA 0-7680-0330-X 1998
- Kainer , Karl Metal Matrix Composites Wiley-VCH 2006 8
- Kaufman J. G. , and Rooy E. L. Aluminum Alloy Castings: Properties, Processes and Applications ASM International 2004
- SAE International Surface Vehicle Standard Air Brake Performance and Wear Test Code Commercial Vehicle Inertia Dynamometer SAE Standard J2115 Aug. 2008
- Kero , M. and Halonen , A. Development and Testing of Lightweight Aluminum Composite Brake for Medium to Heavy Duty Vehicles SAE Technical Paper 2010-01-1705 2010 10.4271/2010-01-1705
- SAE International Surface Vehicle Recommended Practice Wear Test Procedure on Inertia Dynamometer for Brake Friction Materials SAE Standard J2707 Oct. 2012