It is seen that blisk will be in a nodal diameter vibration state under the engine order excitation. which can be simulated by traveling wave excitation. The nodal diameters rotate on the blisk and it is necessary to identify the specific form of the nodal diameter vibration. Here. https://clgrsuj3yfh3j.bloginwi.com/68599010/mouth-voix-et-lieux-du-pouvoir-dans-norma-rae-de-martin-ritt-1979