Science and Education Publishing American Journal of Mechanical Engineering 1 7 2013 11 11 Analysis of Influence of Strain Gage Rosette on Relieved Strain 309 312 EN Patrik Šarga Department of Applied Mechanics and Mechatronics, Technical university in Košice, Faculty of Mechanical Engineering,; Letná 9, 040 01 Košice, Slovakia Peter Senko František Trebuňa AJME20131731 10.12691/ajme-1-7-31 2013 10 14 2013 10 17 2013 11 11 Hole-drilling method is the most widely used method for measuring residual stresses. This method is performed using strain gage rosette attached to the surface of the studied components, through which we drill blind or through-hole. This paper is devoted to analyzing of influence of strain gage rosette on relieved strain. Our aim was to establish more accurately model of strain gage rosette, and examine its effect on hardening of the surface around the hole. For modeling by FEM was used strain gage rosette RY 21 made by HBM.