Tribology concentrates on wear, friction, and lubrication of interacting surface in relative motion. Wear, which is the major cause of material wastage, evolves in three separete stages: running-in, steady-state, and sever wear. Running-in has an important role in loss of material performance and this process involves the evolution of the key tribological parameters. Hence, running-in behavior of a tribocomponent experiencing point contact in mixed lubrication regime is investigated both theoretically and experimentally. The transient wear coefficient during the running-in is predicted using the continuum damage mechanics approach (CDM). Predictions involve the use of the load-sharing concept, taking into account the contribution of the asperities and the lubricant. The experimental work entails a series of pin-on-disk tests. Comparing the results displayed, it is observed that the calculated maximum error in the predicted wear volume and arithmetic mean roughness at each stage running-in are 1% and 5%, respectively. Comparisons of the theoretical prediction and experimental tests of friction coefficient and wear coefficient are found to be in good agreement. Importantly, the model can be used as a guide for selecting the sliding speed or load to achieve the optimum steady-state performance in terms of wear rate or power loss.
Ghatrehsamani, S., Hemmasian, A. A., Babasafari Zamani, A., & Akbarzadeh, S. (2024). Prediction of Running-in Behavior for Point Contacts under Mixed Lubrication. AUT Journal of Mechanical Engineering, 8(3), 3-3. doi: 10.22060/ajme.2024.23103.6102
MLA
Sahar Ghatrehsamani; Amir Arsalan Hemmasian; Ali Babasafari Zamani; Saleh Akbarzadeh. "Prediction of Running-in Behavior for Point Contacts under Mixed Lubrication". AUT Journal of Mechanical Engineering, 8, 3, 2024, 3-3. doi: 10.22060/ajme.2024.23103.6102
HARVARD
Ghatrehsamani, S., Hemmasian, A. A., Babasafari Zamani, A., Akbarzadeh, S. (2024). 'Prediction of Running-in Behavior for Point Contacts under Mixed Lubrication', AUT Journal of Mechanical Engineering, 8(3), pp. 3-3. doi: 10.22060/ajme.2024.23103.6102
VANCOUVER
Ghatrehsamani, S., Hemmasian, A. A., Babasafari Zamani, A., Akbarzadeh, S. Prediction of Running-in Behavior for Point Contacts under Mixed Lubrication. AUT Journal of Mechanical Engineering, 2024; 8(3): 3-3. doi: 10.22060/ajme.2024.23103.6102