Testing brake pads – compressibility and shear testing

Use of a GALDABINI universal testing machine with different testing tools and measuring probes

Testing the compressibility of brake pads ISO 6310

Since the deformation path is very small, measurements are taken directly on the sample using high-resolution measuring probes. An electrical average is calculated from a total of 3 measuring probes (arranged at 120° to each other). The resolution of the measuring signal is 0.1 µm (0,000.1 mm).

The test sequence can be freely defined. For example, it is possible to perform two setting cycles first and determine the setting behavior only in the third cycle. Thanks to the integrated heating plate, the tests can be carried out at both room temperature and 400°C. This configuration is ideally suited for a 50 or 100 kN universal testing machine as standard. However, it can also be adapted for more powerful machines if required.

The ISO 6310 standard sets out some requirements for the calibration of force and deformation:
This can only be carried out with an HBM (Hottinger Baldwin Messtechnik) load cell for which the deformation path is known. Therefore, a standard calibration is carried out by SCHÜTZ+LICHT Prüftechnik in accordance with ISO 7500-1 and ISO 9513. In addition, a calibration must be carried out with the above-mentioned load cell. The customer can provide this load cell or an additional load cell can be ordered. Purchasing your own load cell is particularly useful so that you can carry out the test independently.