Individual Tribology Tests

These test benches are designed to measure friction losses, which are then converted into coefficients. They usually have to be adapted to the required test situation.

Applications

If you are not sure if this are the right tests for your tribological problem, click here: which test bench?

Powder Hardness Test

The powder hardness test is a LOM development to specificate scratch potential, stiffness, hardness and milling behaviour of powder and single particles.

Description in picture of powder hardness
powder hardness

Standard:  Internal LOM method

Load (max):  0.5 – 20 N

Hardness range:  = 100-1200 HV

Results:  Particle hardness

Principle

The powder hardness test method enables to rate real hardness and stiffness values at small particles. The potential to scratch surfaces is also depending on the particle form and size.

A powder or single particles are rubbed between two high-polished surfaces with exactly the same hardness. By rubbing the powder between softer and softer surfaces, it is possible to determine the surface hardness to which the powder can cause scratches.

Oscillating Test

The oscillating test bench is simulating slow movements against bounded abrasives, textiles, and slurries against one fixed specimen.

Standard:  DBL 5578, PV 3366, PV 3949 + different automotive standards

Load:  1-150 N

Sample moving speed:  Fixed

Sample moving distance:  0.24 m per cycle/rotation

Plate moving speed:  Variable

Results:  Weight loss

Principle

A pin sample is pressed static to a slow moving surface or bath with powder or slurries. Developed to test the performance of flocked surfaces, this test was last used to study the mechanisms of different sandpaper designs against metals.

Interested in performing own tests or getting consulted for best test options?