Rtec Brake screening friction and wear module allows to do quick rotor and brake materials tribology friction and wear analysis. The tester comes with the patented inline profilometer that allows to quantify wear of both brake and rotor surface change vs number of cycles , speed and loads. This application note describes the use of MFT 5000 to perform standard tests (SAE J2522) and a custom test to measure wear rate of the brake pad friction materials.
● Upto 12,000N load
● Inline Profilometer to analyse pads and rotor
● Inline Torque measurement
● -60C to 500C temperature
The state of the art Rtec Multi Function tribometer Mft-5000 is globally regarded as the most versatile and technologically advanced tribometer. The patented integrated 3D profilometer allows to analyse surface change vs time makes it usable for many application across various industries. In addition it comes with patented force sensors (piezo, capacitive & strain gauge) with ultra low resolution, highest speeds, stable torque and widest load range than any other commercially available tribometer.
MFT-5000 verstatily allows to mount several test/application specific modules on same platform. Please visit following links to learn more - Product page, Main Applications
Brake shoe friction materials are critical elements of every vehicle. The advent of hybrid and electric cars, regenerative braking and modern safety regulations are key motivations to develop brake friction materials. The brake material tribometer involves evaluating behavior of a friction material at varying pressures, speeds, temperatures and deceleration conditions. Rtec MFT 5000 offers unique advantages over typical bench top testing systems and full blown dynamometers.
This allows flexibility in sample size while maintaining the required contact pressures. In a typical dynamometer test, the design of calipers also plays an important role. This makes it difficult to specifically study material interaction. Samples of consistent geometry on MFT platform allow a test procedure that assesses brake pad material composition independent of design. The same set up can be used to evaluate materials for motor vehicles fitted with disc brakes or drum brakes.
Here, we demonstrate use of Rtec MFT 5000 to simulate a subsection of SAE J2522. Different material combinations can be quickly evaluated by testing on coupons. Three cylindrical samples are mounted as representative of brake materials. A cast iron disc is used as the counter surface. A minimum sample size of 12.7 mm X 6.35 mm [0.5”X0.25”] for brake materials and a disc of 50.8 mm radius [2”] for rotor is recommended. Other sample sizes can also be accommodated easily on the platform.
MFT 5000 with patented inline imaging technology offers the unique advantages to characterize wear vs. number of cycles on brake materials. The setup includes a 3D Profilometer designed specifically for tribology that combines spinning disc confocal and white light interferometry. Advanced encoders on the automatic stage allow the sample to alternate between mechanical test area and profilometer.
Rtec MFT 5000 is a fast, reliable and cost-effective tool for screening of brake and rotor materials. The high resolution sensors can characterize even small changes in the composition of material. Using the inline profilometer it is possible to study the change in sample surface with sub nm resolution. The advantages in size and flexibility makes MFT 5000 an ideal tool to compliment full scale dynamometer testing.