Science and Education Publishing American Journal of Mechanical Engineering 1 7 2013 11 08 Modal Analysis of Exhaust Fan Impeller 457 460 EN Róbert Huňady Department of Applied Mechanics and Mechatronics, Technical University of Košice,Slovakia František Šimčák František Trebuňa AJME20131761 10.12691/ajme-1-7-61 2013 10 22 2013 10 30 2013 11 08 The paper deals with determination of modal parameters of exhaust fan impeller. The aim of performed analysis was to investigate whether resonance is the cause of excessive operational vibration of the fan. The paper describes results of experimental measurement by which the natural frequencies of non-rotating impeller were determined. The resonance frequencies and mode shapes during the rotation were estimated by using Finite Element simulation.