Stresses produced by vibrations reduce the life of turbo engine blades. The design of disk assemblies requires the capability to predict their dynamic behavior. In order to achieve this objective, knowledge of damping associated with the contact between blade and disk is fundamental. This paper proposes a technique to measure the influence of blade-disk attachment on the dynamics of turbo engine blades. Moreover, experimental values of damping and resonance frequencies are presented as a function of the amplitudes of vibration and of centrifugal load at the attachment.

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