eng Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 2016-12-17 4 7 454 459 10.12691/ajme-4-7-41 AJME20164741 article Ingrid Delyová ingrid.delyova@tuke.sk 1 Darina Hroncová 2 Peter Sivák 2 Department of Applied Mechanics and Mechanical Engineering, Faculty of Mechanical Engineering Technical University of Košice, Slovakia Department of Mechatronics, Faculty of Mechanical Engineering Technical University of Košice, Slovakia Stress concentrators are sudden changes of shape of mechanic part, which evoke changes of force flow, so they influence tensions, which load this part. The same goes for the static or the cyclic loading. The notches which are on the surfaces of various components increase the stress. Such kind of stress creates instability and weakening of the component. However, it is possible to reduce that influence by adding such notches which are spaced apart in some distance. http://pubs.sciepub.com/ajme/4/7/41/ajme-4-7-41.pdf stress notches loading stress concentration factor