Free Layer Blade Damper By Magneto-mechanical Coating

To prevent gas turbine engine blade failure, the excited resonant response needs to be attenuated to an acceptable level. Under our recent Navy SBIR Phase I and Phase II (Free Layer Blade Damper by Magneto-mechanical Coating) efforts, a novel free layer blade damper has been developed in order to enhance vibration damping and fatigue strength, without diluting surface properties associated with resistance to wear, erosion, and corrosion. The successful completion of the effort has already proven that the novel coating system is an effective solution for eliminating fatigue problems of gas turbine engines. In turn, a SBIR- ID/IQ Phase III project in conjunction with GE-Aviation has been recommended for real world demonstration via an engine test. The objective of this Phase II work is to further develop the damping coating technology to Technology Readiness Level (TRL) 6 and to demonstrate TRL 6 by testing in a relevant environment engine test.