eng Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 2016-12-17 4 7 293 296 10.12691/ajme-4-7-12 AJME20164712 article Ingrid Delyová ingrid.delyova@tuke.sk 1 František Trebuňa 1 Peter Sivák 1 Department of Applied Mechanics and Mechanical Engineering, Faculty of Mechanical Engineering Technical University of Košice, Slovakia The evaluation of structures in contemporary times has taken on a more significant role. The current financial situation is forcing owners or operators to extend the life of existing structures and equipment. The operator is faced with two major challenges: the need to extend the continued safe operation of assets and their cost-effective maintenance. This paper looks at the estimation of residual life of an overhead travelling crane and proposes modifications that can be carried out to increase its life span. http://pubs.sciepub.com/ajme/4/7/12/ajme-4-7-12.pdf residual life overhead travelling crane fatigue