This work is licensed under a Creative Commons Attribution-NonCommercial- NoDerivatives 4.0 International License. This is a postprint version of the following published document: Infante García, D., Giner, E., Miguélez Garrido, M. H., & Wahab, M. A. (2019). Numerical analysis of the influence of micro-voids on fretting fatigue crack initiation lifetime. Tribology International, 135, 121-129. DOI: 10.1016/j.triboint.2019.02.032 © 2019 Elsevier Ltd.