Free Layer Blade Damper By Magneto-mechanical Coating

In this SBIR effort, a novel free layer blade damper using a thin layer of Magneto-mechanical coating has been developed for enhancing vibration damping and resistance to erosion, corrosion, and oxidation. The objective in Phase II is to develop a framework for the estimation of the damping mechanism assessment with the consideration of the effects of the real-world pertinent characteristics to real engine blades and IBR/blisks response. The successful completion of Phase II will prove that the novel coating system is an effective solution providing significant damping to blades/blisk. At the completion of Phase II, we will have accomplished the following: (1) Extensive analytical-experimental evaluations and assessments on fatigue life, effects of centrifugal and thermal forces, high cycle survivability, long-term durability, microstructure, bonding strength, and resistance to erosion, corrosion, & oxidation. These evaluations will demonstrate the effectiveness of the coating system; (2) A fully functioning prototype, demonstrating the full implementation of the coating system; (3) A finite element based analysis and design tool, the finite element procedure developed in Phase I will be extended to real blades and blisks which accounts for the effects of centrifugal and thermal loading; (4) Complete planning on real-world implementation and production for Phase III.