eng Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 2017-12-15 5 6 247 251 10.12691/ajme-5-6-3 AJME2017563 article Miroslav Pástor 1 František Trebuňa 1 Peter Čarák peter.carak@tuke.sk 1 Ján Kostka 1 Department of Applied Mechanics and Mechanical Engineering, Technical University of Košice, Faculty of Mechanical Engineering, Letná 9, Košice, Slovakia This article deals with two methods of evaluating stress fields. Those are: photoelasticimetry and the finite element method (FEM). Stress analysis of castellated beams, with different geometry of holes in the vertical portion of the beam-web was performed by photoelasticimetry and the finite element method. The results obtained using experimental analysis and numerical modelling were evaluated and compared. http://pubs.sciepub.com/ajme/5/6/3/ajme-5-6-3.pdf photoelasticimetry finite element method castellated beam