How we measure wear and friction
Our sliding wear apparatus can create different conditions: pin, line or area contact on either reciprocating or rotating plates. In every case, we can determine the wear rates and record friction measurements. We can also control many test parameters to simulate the real environment.
Wear rates can be assessed both by the mass loss of the pin and through 3D profilometry of any wear scars present in the plate. We record static and dynamic coefficients of friction during testing together with noise made by the sliding contact.
We can carry out wear and friction measurements. This allows a comparison of two materials sliding against each other.
Ranking of materials
Our specialist engineers can use their experimental data to provide a ranking and also examine the worn surfaces. Using material characterisation techniques, we can interpret wear processes and give you an opinion on why the materials ranked the way they did.
- Relative speed: up to 14 m/s
- Sliding distance
- Contact area
- Loading fixed or variable: up to 1000 N
- Lubricated or dry
- Submerged in a bath or dripped lubricant
- Room temperature, chilled or heated: up to 600°C
- Pin material and finish
- Plate material and finish
The Te77 is fully computer controlled with the ability to record at high sampling frequencies many test parameters such as friction, load, temperature, sliding speed etc.
Plan view of the stage with the head and loading arm moved back.
We can remove the oil and replace the cam to provide a range of stroke lengths.
We can fit a 20:1 reduction gearbox to provide more torque during low speed friction tests.
We have a heated plate that can take the base plate sample up to 600 degC.
Example of white plastic pin which has suffered material transfer after dry sliding on a black plastic plate.
We also have the equipment to record sound levels during sliding tests to quantify the level of any squeaking that occurs.