At nC² we use state-of-the-art tribometers, including sliding wear apparatus, to create different conditions for the material pair to determine:
- wear rates of both materials
- the dynamic coefficient of friction (D.Cof)
- the static coefficient of friction (S.Cof)
- point, line or area contact
- reciprocating or rotating motions
- recording sound levels
Please get in touch with us so we can explain how Cof data can be used to improve the design of your product.
Learn more about measuring friction from our short video.
Our team of specialist tribologists have the experience and expertise to select the optimum test conditions so you get the most information possible about your materials and how they will behave in service.
With doctorates in Tribology (the science of friction and wear) and Chemistry we have the right mix of knowledge to answer your questions.
A 'tribometer' is a piece of equipment used to measure friction and wear of test samples
The work horse of our Tribology lab is the TE77, which is a reciprocating tribometer capable of high frequency data collection. This system allows us to monitor the dynamic coefficient of friction during testing.
The loading and speed is computer controlled, so complex profiles can be completed quickly, continually monitoring the impact of the changes on the friction of the material pair.
- 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 can use a heated plate to warm up the base plate sample up to 600 C.
Example of a 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.
A Question of Motion
With various tribometers at our fingertips we can recreate the motion and loading condition you require.
The pin-on-disc tribometer has a long history of standard wear and friction tests, in which a constant, single direction motion is required. Coupled with our powerful post test analysis techniques this simple rig can be used to rank your materials.
Additionally, using material characterisation techniques, we can interpret wear processes and give you an opinion on why the materials ranked the way they did.