The so-called PATAT (acronym for Ploughing Asperity Testing Apparatus Twente) is an in-house developed tribotester that enables friction and wear experiments on a microscopic scale. A stationary indenter is mounted in the holder, while a sample is mounted on an xy-table. The set-up simulates the contact conditions and friction at the scale of a single ploughing asperity.
A load is applied on the contact, while the sample moves. During the experiment, both the friction and the indentation depth are measured. Using a high magnification camera, the contact conditions and wear processes can also be seen.
It is planned to expand the set-up with a Surface Force Apparatus Unit.
Keywords: PATAT, ploughing, asperity, friction, wear
Equipment: Build by Surface Technology and Tribology Group
Location: De Horstring N100
Research group: Surface Technology and Tribology
Contact: W. Lette
Picture of the PATAT
SEM picture of galling onto tip, after a PATAT experiment