eng Science and Education Publishing American Journal of Mechanical Engineering 2014-11-07 2 7 265 269 10.12691/ajme-2-7-19 AJME20142719 article Pavol Lengvarsky pavol.lengvarsky@tuke.sk 1 Martin Hagara 1 Martin Schr?tter 1 Jozef Bocko 1 Department of Applied Mechanics and Mechanical Engineering, Technical University of Košice, Faculty of Mechanical Engineering, Slovakia There is described the identification of coupled modes of axially symmetric structure in this paper. The stiff pipe with free-free boundary conditions was chosen as an investigated specimen. Two different experimental modal analysis approaches were performed and their results were compared with numerical methods. http://pubs.sciepub.com/ajme/2/7/19/ajme-2-7-19.pdf experimental modal analysis coupled modes axially symmetric structure