A novel method to investigate tribological behaviors under transient temperatures using Pin-on-Cylinder tribometer and IR-thermography in glass forming

In high-temperature material forming, achieving high precision demands a nuanced understanding of thermal and mechanical interactions at the contact interface. Conventional methods, often involving separate measurements of friction and heat transfer coefficients, encounter challenges as the growing number of influencing factors amplifies experimental complexity. This research introduces an innovative approach enabling the simultaneous determination of both coefficients in a single experimental run. A specially designed pin-oncylinder tribometer enables the measurement of transient friction forces resulting from temperature variations at the interface, recorded by an infrared thermographic camera. Inverse methods are developed to derive the friction and heat transfer coefficients from the acquired transient force and temperature data. The method expedites the determination of contact coefficients, providing an efficient avenue for numerical and analytical studies in hot forming processes.