Visualization of the processes taking place in the contact zone with in-situ tribometry

► Design of in-situ tribometer to visualize contact conditions with light microscopy. ► Methodology is applicable as reference tests using composite materials proof. ► Formation of particle structured surface for PTFE/Bz compounds observed. ► Wear processes taking place in TPU materials visualized. ► In-situ documentation of micro-cracking, micro-ploughing and micro-cutting.