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Mistuning of turbine engine bladed disks can cause large increases in blade vibration amplititudes that contribute to engine high cycle fatigue.For decades, many researchers have devoted themselves to better understand the effects of mistuning on bladed disks vibration.Recently.a significant body of literature has exhibited that bladed disks often feature very high mistuning sensitivity for operational conditions corresponding to tuned frequency veering regions in a nature frequency versus some physical parameter (e.g.nodal diameter) plot.[1~4]