Deflection Measurement for Brake pads and / or Assemblies Using Defined Segment Applicator and Applied Stress
This SAE Standard specifies a method for measuring the deflection of friction materials and disc brake pad assemblies to be used in road vehicles with a Gross Vehicle Weight Rating below 4336 kg.
This SAE test method differs from SAE J2468 in the preload and maximum load applied to the test sample when deflection is measured. It adopts the material applied stress levels found in ISO 6310 (0.5 to 8MPa) using a 25mm diameter flat plunger.
Rationale: Segment or Specific Compressibility testing of brake pads has been proposed in a previous SAE paper (2008-01-2572). Since that time, some applications of this method have been adopted in practice; first in EU and now some R&D testing in N.A.