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|CONTACT 1||External enquiries: Martine Townsend - Grants & Funding Unit|
|CONTACT 2||Internal enquiries: Dr Nathalie Renevier|
|Enquire about this item|
|SITE||Media Factory Site|
The test specimen should be 55mm diameter and 5-10mm thick. The specimen is fixed into the sample holder using a pin, and this assembly is inserted into the tester. Weights are added to provide the desired contact pressure with a maximum load up to 60kg, and the rotational velocity is set from 100 to 2000 rpm.
The test could be run either dry or lubricated. A break-in period, typically 40 hours, is run to ensure intimate contact between the mating parts.
The test sample is then weighed and measured, and the test begins. Contact pressure, rotational velocity (RPM), and the number of cycles (hours) must be specified for each test.
Wear rate can be calculated as either in./hour or grams/hour. Coefficient of friction is calculated as Torque / force x specimen radius. PV limit (pressure x velocity) is the point at which the material fails catastrophically.
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Last Updated: 9th August, 2017