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Research Reports

MRR 215: Evaluation Of Commercial Aftermarket Brake Pads Performance

Brake pads are one of the most important components in automobile braking system. As reported by several studies, brake pads are the results of the combination of several materials and the new formulations  are mainly based on the experience  of trial and error  method.  A  composite  of  brake  pads  usually  consists  of  structural  materials, matrix,  filler,  abrasives  and  lubricants.  Each  component  plays  different  roles  in the performance of friction materials. The effectiveness of the brakes subjected to quality and proper composition of the brake pads.  
 
The designer of brake pads must consider factors such as friction stability, durability and  minimization   of  noise  and  vibration.  A  variety  of  materials  is  combined  to maximise  the  performance   of  friction  materials  in  all  areas.  Categories  of  brake materials  include  metal, semi-metallic,  non-asbestos  organics  and ceramic.  Different formulations have varying wear rates, braking properties and noise levels.  
 
The evaluation of the performance of brake pads involves friction test and wear characteristics  of friction  material.  Different  countries  practice  different  regulations, which set the minimum requirement  for the friction materials  to perform. The main procedures  that  are  publicly  available  and  can  be  referred  include  Federal  Motor Vehicle  Safety  Standards  (FMVSS),  J  Standards  or  Recommended  Practices, International  Standards  (ISO) and ECE Regulations  (UNECE).  It should  be noted  that during the period of this study, the Malaysian government  has already implemented United  Nation  Regulation  90 (UN R90)  and Malaysian  Standard  (MS)  1164:2015  for replacement  brake  pads.  However,  the regulations  are still  not gazette.  This  report presents  the  performance  of aftermarket  brake  pads  without  any  marked  proof  of certification    sold   in   Malaysian    market    and   suggests    a   direction    for   future developments.  

An experimental investigation was conducted to evaluate the performance analysis of commercial brake pads sold in Malaysia. The brake pads selected in this study belong to a large circulation vehicle in Malaysia, which also establish a high number of sales. Convenience sampling was done in Klang Valley area to investigate the purchase price sold for this selected model. Based on the price, an original and two aftermarket brake pads were selected for on-road performance test, where the approach was made according  to  UN  R90.  Results  of  the  performance  obtained  by  the  brake  pads  are evaluated and discussed in this report. It was found that both aftermarket brake pads surpassed  the requirement  of UN R90  with  REM1  shows  greater  performance  than REM2. However, REM1 also recorded the highest wear rate after the test, followed by REM2  and  OEM.  The  materials  properties  of  all  tested  brake  pads  were  further evaluated for further comprehension of the friction materials. 

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MRR No 215_Evaluation of Commercial Aftermarket Brake Pads Performance.pdf
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